Read the land. Check the access.

Explore named opportunities across all 50 states, then inspect authoritative geological maps for the rocks around them.

This is an opportunity index, not a mineral-deposit boundary map or a complete inventory of public digging sites. A blank state means our selected coverage is incomplete—not that no opportunities exist. Public collecting may require a permit, and surface collecting does not permit excavation.
Alabama: 1 matching listingsAlaska: 3 matching listingsArizona: 5 matching listingsColorado: 5 matching listingsFlorida: 1 matching listingsGeorgia: 2 matching listingsIndiana: 1 matching listingsKansas: 1 matching listingsMaine: 3 matching listingsMassachusetts: 1 matching listingsMinnesota: 1 matching listingsNew Jersey: 1 matching listingsNorth Carolina: 3 matching listingsNorth Dakota: 1 matching listingsOklahoma: 1 matching listingsPennsylvania: 1 matching listingsSouth Dakota: 1 matching listingsTexas: 1 matching listingsWyoming: 2 matching listingsConnecticut: 1 matching listingsMissouri: 7 matching listingsWest Virginia: 1 matching listingsIllinois: 1 matching listingsNew Mexico: 1 matching listingsArkansas: 5 matching listingsCalifornia: 8 matching listingsDelaware: 1 matching listingsHawaii: 1 matching listingsIowa: 1 matching listingsKentucky: 1 matching listingsMaryland: 1 matching listingsMichigan: 2 matching listingsMississippi: 1 matching listingsMontana: 3 matching listingsNew Hampshire: 3 matching listingsNew York: 6 matching listingsOhio: 1 matching listingsOregon: 6 matching listingsTennessee: 1 matching listingsUtah: 3 matching listingsVirginia: 1 matching listingsWashington: 2 matching listingsWisconsin: 2 matching listingsNebraska: 1 matching listingsSouth Carolina: 1 matching listingsIdaho: 3 matching listingsNevada: 4 matching listingsVermont: 1 matching listingsLouisiana: 1 matching listingsRhode Island: 1 matching listingsAlaska & Hawaii shown as insets · not to scale
State boundaries: U.S. Census / US Atlas

Shaded states have listings matching the selected filters. Choose a state to see named places; source links supply directions and boundaries.

GEOLOGICAL LAYERS

See what is underfoot

The USGS map shows rock units from loose sediments to bedrock. These units suggest what to investigate; they do not prove a gem deposit, a find probability or permission to collect.

Open USGS geological map ↗

External USGS service. Its national viewer was released for the lower 48; use the state-map directory for Alaska and Hawaii. Embedded availability depends on the provider.

Geological maps for all 50 states ↗

All states · 107 matching listings

Connecticut · exact site

Case Quarries — permitted group visits

Collecting requires permission / permitPublic land · source checked

Reported materials: Quartz

DEEP permit required for a sponsored educational group. No walk-in collecting; follow permit limits and required safety equipment.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Delaware · known occurrence

Iron Hill gabbro — geological occurrence

Access unconfirmed

Reported materials: Jasper, Drusy quartz, Iron oxides

Geology is documented, but this listing grants no access or collecting rights. Identify the parcel and obtain land-manager permission first.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Hawaii · known occurrence

Kīlauea Iki — geological observation

Observe only

Reported materials: Olivine, Basalt

Observation only. Leave rocks and minerals in place; follow current volcanic hazard closures.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Illinois · exact site

Mazonia-Braidwood fossil collecting

Surface collecting · no diggingPublic land · source checked

Reported materials: Fossil plants, Marine fossils

Obtain the required day permit and reporting form. No excavation or commercial collecting. Use only areas allowed by the permit.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Indiana · exact site

Falls of the Ohio — collecting piles

Surface collecting · no diggingPublic land · source checked

Reported materials: Marine fossils, Brachiopods

Collect only from the designated piles behind the interpretive-center parking lot. Removal from the fossil beds or riverbank is prohibited.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Iowa · exact site

Fossil & Prairie Park Preserve

Surface collecting · no diggingPublic land · source checked

Reported materials: Devonian marine fossils

Collect fossils in the designated quarry area only. Confirm current tool and group rules with Floyd County Conservation.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Kansas · known occurrence

Castle Rock — chalk and fossil observation

Observe only

Reported materials: Marine fossils, Fossil clams

Private property with visitor access subject to owner rules. No fossil hunting or climbing; observe only.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Kentucky · search area

Station Camp Creek tributaries — agate lead

Access unconfirmed

Reported materials: Agate

Reported agate locality, not a public collecting site. Obtain parcel-specific landowner permission; do not enter creeks through private land.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Louisiana · known occurrence

Catahoula Formation — petrified palmwood lead

Access unconfirmed

Reported materials: Petrified wood, Petrified palmwood

Broad geological formation lead only. No collecting parcel or public entrance has been confirmed; secure landowner permission before any field visit.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Maryland · exact site

Calvert Cliffs — public beach fossil hunting

Surface collecting · no diggingPublic land · source checked

Reported materials: Shark teeth, Marine fossils

Use the open beach only. Climbing cliffs, walking beneath them and collecting beneath them are prohibited because of landslides.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Massachusetts · exact site

Betts Mine at Earthdance

Read site restrictions

Reported materials: Rhodonite, Rhodochrosite, Garnet, Pyrite

Arrange permission at least 48 hours ahead. Tailings only; stay away from flooded pits and buildings. Five-gallon maximum; proper rock tools and safety gear required.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Minnesota · exact site

Soo Line Pit — chamber agate permit

Read site restrictions

Reported materials: Lake Superior agate

Buy the current chamber permit and display the receipt. Obtain the official pit map; this map pin is only the Moose Lake locality.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Mississippi · search area

W. M. Browning Cretaceous Fossil Park

Access unconfirmed

Reported materials: Shark teeth, Cretaceous marine fossils

Park geology and fossil activity are documented. Confirm current entry, creek conditions and specimen-removal rules with the park before collecting.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Nebraska · search area

Oglala National Grassland — surface rock search

Surface collecting · no diggingPublic land · source checked

Reported materials: Agate

Personal surface rock collecting only on eligible Forest Service parcels. No digging; exclude private inholdings, developed and protected sites. Confirm parcel boundaries and limits with the Forest Service.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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New Mexico · exact site

Rockhound State Park — main unit

Surface collecting · no diggingPublic land · source checked

Reported materials: Jasper, Chalcedony

Main-unit personal collecting limit is 15 pounds per person; no commercial collecting. Check current park restrictions and do not assume the same permission applies elsewhere.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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North Dakota · search area

Pembina Gorge — NDGS supervised fossil program

Read site restrictions

Reported materials: Marine fossils

Registration and supervision required; no independent digging. Fossils go to the State Fossil Collection, not home with participants.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Oklahoma · exact site

Salt Plains National Wildlife Refuge — crystal dig

Hand digging · restrictions applyPublic land · source checked

Reported materials: Selenite

Stay in the designated digging zone. Personal limit: 10 pounds plus one large cluster per day; no sale. Check refuge closures.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Pennsylvania · exact site

Montour Preserve Fossil Pit

Read site restrictions

Reported materials: Marine fossils

Keep fossils from the designated pit; follow posted pit rules and current operator notices.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Rhode Island · known occurrence

Diamond Hill — quartz occurrence

Access unconfirmed

Reported materials: Quartz

Historical geological documentation does not establish current collecting rights. Obtain town or landowner permission before removing material. This is not the South Carolina fee mine.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Tennessee · exact site

Cooper’s Gem Mine — supplied-material sluice

Read site restrictions

Reported materials: Gem concentrate

Paid sluicing activity uses supplied mining material; this is not evidence of naturally occurring Tennessee gemstones. Follow operator bucket and equipment rules.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Texas · exact site

Mineral Wells Fossil Park

Surface collecting · no diggingPublic land · source checked

Reported materials: Pennsylvanian marine fossils

Collect only in designated areas using permitted small garden tools; follow posted rules. Do not confuse this municipal park with the state park.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Vermont · search area

Buffalo Brook — historical panning lead

Access unconfirmed

Reported materials: Placer gold

State parks documentation mentions gold panning, but current equipment rules and collecting boundaries need confirmation. Contact the park before panning.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Virginia · exact site

Fairy Stone State Park — designated hunt area

Surface collecting · no diggingPublic land · source checked

Reported materials: Staurolite fairy stones

Use the designated fairy-stone hunting area. Hand searching only; no digging tools. Obtain hunt-area directions rather than navigating to this approximate locality pin.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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West Virginia · exact site

Smoke Hole Resort — Moonshine Mining Company

Read site restrictions

Reported materials: Amethyst, Ruby, Emerald, Quartz crystals

Paid gemstone panning with supplied material. Keep activity finds under operator rules; these gems are not a claim of native West Virginia deposits.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Wisconsin · search area

Cornucopia beach — agate search lead

Access unconfirmed

Reported materials: Lake Superior agate

Public beach access does not establish permission to remove stones. Confirm current collecting rules with the Town of Bell; this listing grants no rights on nearby protected shores.

Approximate locality pin, not a verified entrance or collecting boundary. Obtain official directions before travel.

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Arizona · search area

Mexican Tank community sandstone site

Collecting requires permission / permitPublic land · source checked

Reported materials: Sandstone, Flagstone

Hand-pick previously excavated or exposed sandstone only, within permit terms. No heavy equipment. High-clearance four-wheel drive is required.

Approximate locality, not a verified entrance or collecting boundary. Use the official map and current land-manager directions.

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Wisconsin · search area

Quartz Hill — surface specimens only

Surface collecting · no diggingPublic land · source checked

Reported materials: Quartz, Quartzite

Small surface samples only. No digging or surface disturbance at the historic Quartz Hill area. Do not remove artifacts or disturb historic features.

Approximate locality, not a verified entrance or collecting boundary. Use the official map and current land-manager directions.

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Maine · search area

Lord Hill Mineral Collecting Area

Collecting requires permission / permitPublic land · source checked

Reported materials: Feldspar, Quartz, Topaz, Phenakite, Garnet

Follow permit tool and quantity limits; 50 pounds or one five-gallon bucket per permit. No collecting outside authorized boundaries.

Approximate locality, not a verified entrance or collecting boundary. Use the official map and current land-manager directions.

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New Hampshire · search area

Moat Mountain Mineral Site

Collecting requires permission / permitPublic land · source checked

Reported materials: Quartz, Feldspar

Collect only within the permitted site and follow current tool restrictions. Limit is 50 pounds or one five-gallon bucket per permit.

Approximate locality, not a verified entrance or collecting boundary. Use the official map and current land-manager directions.

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California · search area

Savahia Peak chalcedony wash

Surface collecting · no diggingPublic land · source checked

Reported materials: Chalcedony

Personal surface collecting only in eligible BLM land. Avoid claims and private parcels; park safely away from highway traffic.

Approximate locality, not a verified entrance or collecting boundary. Use the official map and current land-manager directions.

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Ohio · exact site

Sylvania Fossil Park

Surface collecting · no diggingPublic land · source checked

Reported materials: Brachiopods, Corals, Devonian marine fossils

Keep fossils found in the designated pit; hammers, picks, shovels and similar tools are prohibited

Map coordinates are approximate. Check official directions and property boundaries.

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Arkansas · Listed locality

Crater of Diamonds State Park

Read site restrictions

Reported materials: Diamonds, Amethyst, Garnet, Jasper, Quartz

Keep the diamonds, rocks and minerals you find within park limits

Map coordinates are approximate. Check official directions and property boundaries.

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New York · Listed locality

Penn Dixie Fossil Park

Read site restrictions

Reported materials: Trilobites, Brachiopods, Crinoids, Corals

Visitors may collect and keep Devonian fossils

Map coordinates are approximate. Check official directions and property boundaries.

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Utah · Listed locality

U-Dig Fossils Quarry

Read site restrictions

Reported materials: Elrathia trilobites, Asaphiscus trilobites, Cambrian fossils

Visitors may keep the trilobites they collect

Map coordinates are approximate. Check official directions and property boundaries.

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Oregon · Listed locality

Oregon Sunstone Public Collection Area

Surface collecting · no diggingPublic land · source checked

Reported materials: Oregon sunstone, Clear feldspar, Yellow sunstone, Pink sunstone

Personal, noncommercial collection is allowed; never collect on a private claim without permission

Map coordinates are approximate. Check official directions and property boundaries.

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Georgia · Listed locality

Crisson Gold Mine

Read site restrictions

Reported materials: Placer gold, Gold-bearing quartz, Black sand, Gem concentrate

Pan the mine-provided ore in the designated visitor area

Map coordinates are approximate. Check official directions and property boundaries.

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Alabama · Listed locality

Alabama Gold Camp

Read site restrictions

Reported materials: Placer gold, Red garnet, Citrine, Fossils

Visitor access includes panning, sluicing and metal detecting; powered equipment has added fees

Map coordinates are approximate. Check official directions and property boundaries.

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Missouri · exact site

Sheffler Rock Shop & Geode Mine

Read site restrictions

Reported materials: Keokuk geodes, Quartz crystals, Calcite, Chalcedony

Paid dig includes up to 50 pounds of geodes; bring your own buckets and hand tools

Map coordinates are approximate. Check official directions and property boundaries.

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Missouri · Listed locality

Mark Twain National Forest — Potosi District

Surface collecting · no diggingPublic land · source checked

Reported materials: Drusy quartz, Chert, Dolomite, Common invertebrate fossils

Reasonable hand-size surface samples of common rocks, minerals and common fossils may be collected for personal use only

Map coordinates are approximate. Check official directions and property boundaries.

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Missouri · Listed locality

Mark Twain National Forest — Eleven Point District

Surface collecting · no diggingPublic land · source checked

Reported materials: Brachiopods, Crinoid fragments, Chert, Dolomite

Surface collection of reasonable personal-use amounts of common rocks, minerals and common invertebrate fossils is allowed

Map coordinates are approximate. Check official directions and property boundaries.

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Missouri · exact site

Missouri Mines State Historic Site

Observe only

Reported materials: Galena displays, Historic mining equipment, Mozarkite displays, Missouri mineral gallery

Look and learn only—collecting artifacts, rocks or minerals from Missouri state historic sites is not allowed

Map coordinates are approximate. Check official directions and property boundaries.

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Colorado · Listed locality

Clear Creek County Open Space

Read site restrictions

Reported materials: Fine placer gold, Black sand, Quartz gravel, Iron-stained concentrates

Recreational gold panning means one person with a pan—no sluice box or suction dredge

Map coordinates are approximate. Check official directions and property boundaries.

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Colorado · Listed locality

Pike–San Isabel National Forests

Surface collecting · no diggingPublic land · source checked

Reported materials: Quartz, Feldspar, Granite pegmatite, Common mineral specimens

Small quantities of common rocks and mineral specimens may be collected for personal, noncommercial use where open

Map coordinates are approximate. Check official directions and property boundaries.

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Colorado · Listed locality

Rio Grande National Forest

Collecting requires permission / permitPublic land · source checked

Reported materials: Agate, Jasper, Quartz, Petrified wood

The Forest lists a free-use permit for limited personal collection of rocks, minerals, eligible fossils and petrified wood

Map coordinates are approximate. Check official directions and property boundaries.

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Colorado · Listed locality

Florissant Fossil Beds National Monument

Read site restrictions

Reported materials: Petrified redwood stumps, Fossil insects, Fossil leaves, Eocene ecosystem exhibits

View only—digging or collecting fossils, rocks, petrified wood, artifacts or any natural feature is strictly prohibited

Map coordinates are approximate. Check official directions and property boundaries.

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Arizona · Listed locality

Lynx Creek Gold Pan Day Use Area

Read site restrictions

Reported materials: Placer gold

Recreational hand panning only; pack out all waste and check current forest alerts

Map coordinates are approximate. Check official directions and property boundaries.

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California · Listed locality

Merced River Recreation Management Area

Read site restrictions

Reported materials: Placer gold

Pan or prospect only where open; verify the BLM mining-claims map before disturbing material

Map coordinates are approximate. Check official directions and property boundaries.

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Oregon · Listed locality

Quartzville Creek Wild and Scenic River

Read site restrictions

Reported materials: Placer gold

Recreational mining is allowed on the BLM corridor; respect claims, closures and developed-site rules

Map coordinates are approximate. Check official directions and property boundaries.

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Alaska · Listed locality

Nome Creek Public Panning Area

Panning · equipment rules applyPublic land · source checked

Reported materials: Placer gold

Work only within the public area and avoid adjacent mining claims

Map coordinates are approximate. Check official directions and property boundaries.

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Alaska · Listed locality

Jack Wade Creek Public Panning Area

Panning · equipment rules applyPublic land · source checked

Reported materials: Placer gold

Panning is prohibited on the adjacent mining claims

Map coordinates are approximate. Check official directions and property boundaries.

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New Hampshire · Listed locality

Wild Ammonoosuc River Gold Panning

Read site restrictions

Reported materials: Placer gold

Use a gold pan and small hand trowel only; sluices, rocker boxes, dredges and powered equipment are prohibited

Map coordinates are approximate. Check official directions and property boundaries.

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California · Listed locality

PiPi Campground Area

Read site restrictions

Reported materials: Placer gold

Pan within the wetted stream channel; do not excavate banks or disturb rooted vegetation

Map coordinates are approximate. Check official directions and property boundaries.

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Arizona · Listed locality

Black Hills Rockhound Area

Hand digging · restrictions applyPublic land · source checked

Reported materials: Fire agate, Chalcedony, Agate with red, green and blue color play

Public digging is allowed for personal collecting; fill holes and respect posted boundaries

Map coordinates are approximate. Check official directions and property boundaries.

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Arizona · Listed locality

Diamond Point Crystal Collection Site

Read site restrictions

Reported materials: Doubly terminated clear quartz, Singly terminated quartz, Payson diamonds

Collect only within the designated area using permitted hand methods

Map coordinates are approximate. Check official directions and property boundaries.

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Arkansas · Listed locality

Crystal Vista

Read site restrictions

Reported materials: Terminated quartz points, Clear quartz, Milky quartz, Quartz clusters

Collect quartz at the designated site; it is not an active mine, so work previously disturbed material responsibly

Map coordinates are approximate. Check official directions and property boundaries.

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Maine · Listed locality

Deer Hill Mineral Collecting Area

Collecting requires permission / permitPublic land · source checked

Reported materials: Amethyst quartz crystals, Terminated amethyst, Feldspar, Beryl, Garnet

Use hand tools and comply with every condition printed on the site permit

Map coordinates are approximate. Check official directions and property boundaries.

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Washington · Listed locality

Saddle Mountains Petrified Wood Area

Read site restrictions

Reported materials: Petrified wood, Silicified fossil wood, Agatized-looking wood patterns

Collect only on open BLM land and confirm the current petrified-wood limit with the Spokane District Office

Map coordinates are approximate. Check official directions and property boundaries.

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Nevada · Listed locality

Royal Peacock Opal Mine

Read site restrictions

Reported materials: Precious opal, Black fire opal, Common opal, Opalized fossil wood and limb casts

The operator states fee diggers keep the opal they find; scientifically or exceptionally significant material remains subject to current mine policy

Map coordinates are approximate. Check official directions and property boundaries.

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California · Listed locality

Obsidian Needles Mine

Read site restrictions

Reported materials: Black obsidian, Rainbow obsidian, Obsidian needles

Collect only in the four mapped areas and carry the permit and exhibits while collecting or transporting obsidian

Map coordinates are approximate. Check official directions and property boundaries.

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Oregon · Listed locality

Glass Buttes Obsidian Area

Read site restrictions

Reported materials: Black obsidian, Mahogany obsidian, Sheen obsidian, Rainbow obsidian

Collect reasonable personal-use amounts with hand tools; avoid claims, private parcels and protected sites

Map coordinates are approximate. Check official directions and property boundaries.

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Oregon · Listed locality

John Day Fossil Beds National Monument

Read site restrictions

Reported materials: Fossil mammals, Fossil plants, Ancient ecosystem exhibits, Volcanic-ash fossil beds

View only—collecting or disturbing fossils, rocks and natural features is prohibited

Map coordinates are approximate. Check official directions and property boundaries.

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Oregon · Listed locality

Double Eagle #16 Sunstone Mine

Read site restrictions

Reported materials: Oregon sunstone, Copper-bearing sunstone, Teal sunstone

Paid diggers keep the Oregon sunstone they find under the selected dig option

Map coordinates are approximate. Check official directions and property boundaries.

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Oregon · Listed locality

Spectrum Sunstone Mine

Read site restrictions

Reported materials: Oregon sunstone, Red sunstone, Green sunstone, Schiller sunstone

Keep finds according to the operator’s selected digging package

Map coordinates are approximate. Check official directions and property boundaries.

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New York · Listed locality

Crystal Grove Diamond Mine

Read site restrictions

Reported materials: Herkimer diamonds, Quartz crystals, Drusy quartz

Keep the Herkimer quartz crystals and drusy specimens you find

Map coordinates are approximate. Check official directions and property boundaries.

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New York · Listed locality

Diamond Mountain Mining

Read site restrictions

Reported materials: Herkimer diamonds, Quartz clusters, Skeletal quartz

Collect Herkimer quartz under the mine’s current rules and orientation

Map coordinates are approximate. Check official directions and property boundaries.

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New York · Listed locality

Herkimer Diamond Mines

Read site restrictions

Reported materials: Herkimer diamonds, Quartz crystals, Dolostone vugs

Keep the Herkimer quartz crystals found during the paid prospecting session

Map coordinates are approximate. Check official directions and property boundaries.

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Arkansas · Listed locality

Ron Coleman Mining

Read site restrictions

Reported materials: Quartz crystals, Clear quartz, Smoky quartz, Amethyst

Take home all quartz crystals found in the designated digging area

Map coordinates are approximate. Check official directions and property boundaries.

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Arkansas · Listed locality

Wegner Quartz Crystal Mines

Read site restrictions

Reported materials: Quartz crystals, Smoky quartz, Phantom quartz, Amethyst

Keep crystals found under the selected mine-tour or tailings option

Map coordinates are approximate. Check official directions and property boundaries.

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Arkansas · Listed locality

Sweet Surrender Crystal Mine

Read site restrictions

Reported materials: Quartz crystals, Calcite, Iron-coated quartz

Keep quartz collected under current mine limits

Map coordinates are approximate. Check official directions and property boundaries.

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Nevada · Listed locality

Rainbow Ridge Opal Mine

Read site restrictions

Reported materials: Precious opal, Black opal, Opalized wood, Common opal

Keep opal found under the selected digging option

Map coordinates are approximate. Check official directions and property boundaries.

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California · Listed locality

California State Gem Mine

Read site restrictions

Reported materials: Benitoite, Neptunite, Joaquinite, Natrolite

Keep eligible material under the operator’s current collecting terms

Map coordinates are approximate. Check official directions and property boundaries.

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California · Listed locality

Himalaya Tourmaline Mine

Read site restrictions

Reported materials: Tourmaline, Lepidolite, Quartz, Feldspar

Keep eligible tourmaline and pegmatite minerals under current mine terms

Map coordinates are approximate. Check official directions and property boundaries.

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Georgia · Listed locality

Hogg Mine

Read site restrictions

Reported materials: Beryl, Aquamarine, Rose quartz, Tourmaline

Keep native minerals collected under the mine’s rules

Map coordinates are approximate. Check official directions and property boundaries.

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North Carolina · Listed locality

Cherokee Ruby & Sapphire Mine

Read site restrictions

Reported materials: Ruby, Sapphire, Garnet, Quartz

The operator identifies the mine as unsalted; keep finds under posted terms

Map coordinates are approximate. Check official directions and property boundaries.

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North Carolina · Listed locality

Emerald Hollow Mine

Read site restrictions

Reported materials: Emerald, Hiddenite, Amethyst, Aquamarine, Quartz

Keep eligible gems found within the areas covered by the permit

Map coordinates are approximate. Check official directions and property boundaries.

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Maine · Listed locality

Dig Maine Gems

Read site restrictions

Reported materials: Tourmaline, Quartz, Beryl, Feldspar, Garnet

Keep specimens recovered from purchased material or authorized field-trip ground

Map coordinates are approximate. Check official directions and property boundaries.

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Montana · Listed locality

Gem Mountain Sapphire Mine

Read site restrictions

Reported materials: Montana sapphire, Garnet, Quartz

Keep sapphires recovered from the mine’s gravel; optional treatment and cutting are separate

Map coordinates are approximate. Check official directions and property boundaries.

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Montana · Listed locality

Crystal Park Mineral Collection Area

Read site restrictions

Reported materials: Amethyst, Smoky quartz, Clear quartz, Quartz crystals

Personal mineral collecting is allowed under posted Forest Service limits

Map coordinates are approximate. Check official directions and property boundaries.

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New Hampshire · Listed locality

Ruggles Mine

Read site restrictions

Reported materials: Mica, Feldspar, Beryl, Uranium minerals, Quartz

Paid visitors may collect up to the operator’s posted bucket limit

Map coordinates are approximate. Check official directions and property boundaries.

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South Carolina · Listed locality

Diamond Hill Mine

Read site restrictions

Reported materials: Quartz, Amethyst, Smoky quartz, Skeletal quartz, Aquamarine

Keep native specimens found at the mine within the posted load limit

Map coordinates are approximate. Check official directions and property boundaries.

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Idaho · Listed locality

Spencer Opal Mines

Read site restrictions

Reported materials: Precious opal, Fire opal, Common opal, Opal matrix

Keep eligible opal under the selected experience terms

Map coordinates are approximate. Check official directions and property boundaries.

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Utah · Listed locality

Topaz Mountain Rockhound Recreation Area

Surface collecting · no diggingPublic land · source checked

Reported materials: Topaz, Quartz crystals, Bixbyite, Rhyolite

Collect reasonable personal-use specimens on open public land and respect active claims and closures

Map coordinates are approximate. Check official directions and property boundaries.

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Utah · Listed locality

Dugway Geode Beds

Surface collecting · no diggingPublic land · source checked

Reported materials: Quartz geodes, Amethyst geodes, Rose quartz, Chalcedony

Collect reasonable personal-use amounts while avoiding claims, protected resources and closed areas

Map coordinates are approximate. Check official directions and property boundaries.

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Arizona · Listed locality

Round Mountain Rockhound Area

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Reported materials: Fire agate, Chalcedony, Quartz, Jasper

Rockhound only within open public land and follow current BLM regulations

Map coordinates are approximate. Check official directions and property boundaries.

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Nevada · Listed locality

Garnet Hill

Surface collecting · no diggingPublic land · source checked

Reported materials: Almandine garnet, Rhyolite, Volcanic specimens

Search surface material or carefully break rhyolite while following posted public-land rules

Map coordinates are approximate. Check official directions and property boundaries.

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California · Listed locality

Wiley Well District Geode Beds

Surface collecting · no diggingPublic land · source checked

Reported materials: Geodes, Quartz crystals, Chalcedony, Agate

Collect only on open public land and verify boundaries, wilderness restrictions and active claims

Map coordinates are approximate. Check official directions and property boundaries.

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California · Listed locality

Chambless Rock Collecting Area

Surface collecting · no diggingPublic land · source checked

Reported materials: Epidote, Hematite, Magnetite, Garnet, Fossiliferous limestone

Collect on open public land outside the adjacent wilderness and leave mine workings undisturbed

Map coordinates are approximate. Check official directions and property boundaries.

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Idaho · Listed locality

Emerald Creek Garnet Area

Collecting requires permission / permitPublic land · source checked

Reported materials: Idaho star garnet, Almandine garnet

Each permit holder may collect up to two pounds of garnet under the current site rules

Map coordinates are approximate. Check official directions and property boundaries.

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Wyoming · Listed locality

Fossil Lake Safari

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Reported materials: Fossil fish, Fossil plants, Fossil insects, Green River Formation specimens

Visitors keep essentially all fish, plant and insect fossils found; exceptionally valuable rare specimens are excluded under operator policy

Map coordinates are approximate. Check official directions and property boundaries.

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Wyoming · Listed locality

American Fossil Quarry

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Reported materials: Fossil fish, Fossil plants, Fossil insects, Fossil coprolites

The operator states that guests keep the fish, plant, insect and other fossils they find

Map coordinates are approximate. Check official directions and property boundaries.

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Washington · Listed locality

Stonerose Eocene Fossil Site

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Reported materials: Fossil leaves, Fossil insects, Fossil fish, Eocene plant material

All finds must be identified by staff; visitors may keep three fossils per day unless a specimen is scientifically significant

Map coordinates are approximate. Check official directions and property boundaries.

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New Jersey · Listed locality

Edelman Fossil Park Quarry Dig

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Reported materials: Shark teeth, Marine fossils, Cretaceous shells, Fossil fragments

Follow educator instructions and the museum’s current policy for handling and retaining finds

Map coordinates are approximate. Check official directions and property boundaries.

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Michigan · Listed locality

Muskegon State Park Shoreline

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Reported materials: Beach finds, Modern coins, Jewelry, Metal litter

All recovered items must be checked by park staff; leave artifacts in place, fill small recovery holes and surrender protected or identifiable property

Map coordinates are approximate. Check official directions and property boundaries.

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Michigan · Listed locality

Grand Haven State Park

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Reported materials: Beach finds, Modern coins, Jewelry, Metal litter

Have every recovery reviewed by park staff; historic artifacts stay in place and lost property may be returned to its owner

Map coordinates are approximate. Check official directions and property boundaries.

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Florida · Listed locality

Little Talbot Island State Park Beach

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Reported materials: Beach finds, Modern coins, Jewelry, Metal litter

Do not keep objects with historic association or anything over 50 years old; turn protected or identifiable finds over to staff

Map coordinates are approximate. Check official directions and property boundaries.

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New York · Listed locality

Jones Beach State Park

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Reported materials: Beach finds, Modern coins, Jewelry, Metal litter

Follow all permit boundaries and report protected, historic or identifiable property as required

Map coordinates are approximate. Check official directions and property boundaries.

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New York · Listed locality

Woodlawn Beach State Park

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Reported materials: Beach finds, Modern coins, Jewelry, Metal litter

Stay inside the permit area and comply with New York State Parks rules for artifacts and lost property

Map coordinates are approximate. Check official directions and property boundaries.

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Missouri · Listed locality

Lake of the Ozarks State Park Public Beach

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Reported materials: Beach finds, Modern coins, Jewelry, Metal litter

Carry proof of registration, use only size-limited recovery tools, remove litter and notify staff of historic, archaeological or $10-plus finds

Map coordinates are approximate. Check official directions and property boundaries.

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Missouri · Listed locality

Stockton State Park Public Beach

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Reported materials: Beach finds, Modern coins, Jewelry, Metal litter

Carry registration, keep tools within size limits, refill disturbances and report historic, archaeological or $10-plus finds

Map coordinates are approximate. Check official directions and property boundaries.

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Missouri · Listed locality

Watkins Mill State Park Public Beach

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Reported materials: Beach finds, Modern coins, Jewelry, Metal litter

Detect only in the authorized sand and shoreline area; carry registration and report historic, archaeological or $10-plus finds

Map coordinates are approximate. Check official directions and property boundaries.

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Alaska · Listed locality

Independence Mine State Historical Park

Hand digging · restrictions applyPublic land · source checked

Reported materials: Placer gold, Black sand, Quartz gravel

Pan-and-shovel prospecting only; do not disturb historic structures, artifacts or closed ground

Map coordinates are approximate. Check official directions and property boundaries.

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Montana · Listed locality

Libby Creek Recreational Gold Panning Area

Panning · equipment rules applyPublic land · source checked

Reported materials: Placer gold, Black sand, Quartz gravel

Hand tools and pans only within the designated area; sluice boxes, rockers and motorized or mechanized mining equipment are prohibited

Map coordinates are approximate. Check official directions and property boundaries.

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North Carolina · Listed locality

Reed Gold Mine Panning Area

Collecting requires permission / permitPublic land · source checked

Reported materials: Placer gold, Gold flakes, Black sand

Gold recovered in the visitor pan may be bottled as a take-home souvenir under site policy

Map coordinates are approximate. Check official directions and property boundaries.

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South Dakota · Listed locality

Big Thunder Gold Mine

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Reported materials: Placer gold, Gold flakes, Black sand, Quartz gravel

Keep eligible gold recovered during the selected operator experience

Map coordinates are approximate. Check official directions and property boundaries.

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Colorado · Listed locality

Country Boy Mine Gold Panning

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Reported materials: Placer gold, Gold flakes, Black sand, Quartz gravel

The operator states visitors may keep the gold they recover during the panning experience

Map coordinates are approximate. Check official directions and property boundaries.

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Idaho · Listed locality

Land of the Yankee Fork Gold Panning Station

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Reported materials: Placer gold, Gold panning concentrate, Black sand

Use the provided station under park staff guidance and follow current take-home rules

Map coordinates are approximate. Check official directions and property boundaries.

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Nevada · Listed locality

Bonanza Opal Mines

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Reported materials: Precious opal, Black fire opal, Common opal, Opalized wood

Keep eligible precious opal, common opal and opalized material under the mine’s current fee-dig terms

Map coordinates are approximate. Check official directions and property boundaries.

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Public collecting coverage — 25 of 50 states have explicitly classified listings

Conservative count: older records without explicit public ownership and collecting-method review are excluded. Every state remains searchable, but comprehensive public-site coverage is unfinished.

StateChecked public collecting listingsCoverage
Alabama0Access research needed
Alaska3Partial — more research needed
Arizona2Partial — more research needed
Arkansas0Access research needed
California3Partial — more research needed
Colorado2Partial — more research needed
Connecticut1Partial — more research needed
Delaware0Access research needed
Florida0Access research needed
Georgia0Access research needed
Hawaii0Access research needed
Idaho1Partial — more research needed
Illinois1Partial — more research needed
Indiana1Partial — more research needed
Iowa1Partial — more research needed
Kansas0Access research needed
Kentucky0Access research needed
Louisiana0Access research needed
Maine2Partial — more research needed
Maryland1Partial — more research needed
Massachusetts0Access research needed
Michigan0Access research needed
Minnesota0Access research needed
Mississippi0Access research needed
Missouri2Partial — more research needed
Montana1Partial — more research needed
Nebraska1Partial — more research needed
Nevada1Partial — more research needed
New Hampshire1Partial — more research needed
New Jersey0Access research needed
New Mexico1Partial — more research needed
New York0Access research needed
North Carolina1Partial — more research needed
North Dakota0Access research needed
Ohio1Partial — more research needed
Oklahoma1Partial — more research needed
Oregon1Partial — more research needed
Pennsylvania0Access research needed
Rhode Island0Access research needed
South Carolina0Access research needed
South Dakota0Access research needed
Tennessee0Access research needed
Texas1Partial — more research needed
Utah2Partial — more research needed
Vermont0Access research needed
Virginia1Partial — more research needed
Washington0Access research needed
West Virginia0Access research needed
Wisconsin1Partial — more research needed
Wyoming0Access research needed

NPS rock and mineral introductionUSGS Cooperative National Geologic Map — lower 48NPS state geological maps — all 50 states