Rockhounding in Park County, CO: 396 USGS Mineral Sites (2026)

Check access before you go. Most sites listed here are old mines, quarries or prospects, and many are on private land or active mining claims. Get the landowner's permission, check the rules of the agency that manages any public land, and never enter mine workings. Locations are approximate.

Sketch map

Past ProducerProducerProspectOccurrenceStatus unknown

107 paw pins; nearby sites are grouped into one pin. Hover or tap a pin for the site name. 13 site(s) with USGS coordinates outside the outline are not pinned. County outline: US Census Bureau cartographic boundary file (2023). Locations approximate.

Woof’s favorite find

Apex Mine

We picked it because its USGS record mentions 4 gem or collectible minerals (Quartz, Gold, Fluorite, Silver) and 9 of our card minerals overall. No other named site here scores as high on both counts. USGS lists it as past producer for Gold, Silver. Minerals mentioned: Quartz, Gold, Mica, Pyrite, Galena, Fluorite, Copper, Silver, Scheelite. Approx. location 39.042, -105.395. USGS record.

Ask first: a USGS record doesn’t mean you can visit. Find out who owns the land and get permission before collecting.

Field cards: what kind of sites?

225

Past Producer

Produced ore or material at some point in the past.

115

Occurrence

The mineral was noted here, without development.

Producer

Was producing when the record was made.

Unknown

Status not recorded.

Prospect

Explored or test-dug, with no recorded production.

Plant

A processing plant site.

Status terms come from USGS MRDS records.

Mineral cards

Gold
Mohs 2.5–3. Soft, heavy and bright yellow; it doesn’t tarnish. Mindat
158 sites
Quartz
Mohs 7. Six-sided points; smoky quartz is NH’s state gem. Mindat
76 sites
Silver
Mohs 2.5–3. Native silver tarnishes black. Mindat
64 sites
Copper
Mohs 2.5–3. Native copper is soft and turns green as it weathers. Mindat
62 sites
Mica
Mohs 2–3. Peels into thin, flexible, shiny sheets. Mindat
51 sites
Pyrite
Mohs 6–6.5. Brassy “fool’s gold,” often cubic. Mindat
45 sites
Garnet
Mohs 6.5–7.5. Usually deep red, round many-faced crystals. Mindat
37 sites
Scheelite
Mohs 4.5–5. Tungsten mineral that glows blue-white under shortwave UV. Mindat
37 sites

Counts are sites whose USGS record mentions the mineral or commodity. Hardness from Mindat.

Minerals recorded here

Chalcopyrite 37Scheelite 36Galena 34Pyrite 26Sphalerite 26Beryl 24Molybdenite 21Uraninite 19Covellite 19Wolframite 18Cassiterite 16Euclase 15

Commodities

Uranium 108Lead 86Gold 84Tungsten 52Silver 44Zinc 37Copper 34Beryllium 31Feldspar 24Molybdenum 17

Sites (first 40)

Site	Commodity	Minerals recorded	Status	Approx. location
Guffey District, West	Tungsten, REE	Allanite, Euxenite, Ilmenite, Monazite	Occurrence	38.750, -105.567
Baumer Pegmatite Prospect	Uranium, Thorium, REE	Allanite, Euxenite, Ilmenite, Monazite	Occurrence	38.708, -105.489
Baumer Pegmatite	Mica, Niobium (Columbium), Tantalum, REE, Thorium	Allanite, Euxenite, Monazite	Occurrence	38.750, -105.501
Teller Pegmatite Claim	REE, Fluorine-Fluorite	Allanite, Gadolinite, Microcline, Molybdenite, Monazite, Orthoclase, Quartz, Xenotime	Producer	38.971, -105.370
Blue, Joy, Champell, J&S#1, Boomer	Beryllium	Amblygonite, Beryl, Fluorite, Hematite, Malachite, Pyrite, Silver, Tantalite	Producer	39.079, -105.449
Hill Top Mine	Lead, Silver, Gold, Copper, Zinc	Argentite, Cerargyrite, Freibergite	Producer	39.208, -106.176
Criterion Claim	Lead, Zinc	Barite, Galena, Sphalerite	Occurrence	39.292, -106.101
Boomer Mine	Beryllium	Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Silver, Sphalerite, Uraninite, Wolframite	Past Producer	39.076, -105.449
China Wall Area	Beryllium	Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite	Past Producer	39.121, -105.438
Little John Mine	Beryllium	Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite	Occurrence	39.072, -105.422
Blue Jay Mine	Beryllium, Molybdenum, Tungsten, Uranium	Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite	Occurrence	39.075, -105.449
A & C Prospect	Beryllium	Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite	Past Producer	39.122, -105.458
Badger Flats Area	Beryllium	Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite	Past Producer	39.076, -105.449
Champell Mine	Beryllium	Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite	Occurrence	39.075, -105.450
Hazel Marie Group	Beryllium	Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite	Occurrence	39.116, -105.450
Redskin Mine	Beryllium	Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite	Producer	39.099, -105.418
Tennessee Mine	Beryllium	Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite	Occurrence	39.078, -105.434
Happy Thought Mine	Beryllium	Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite	Occurrence	39.078, -105.435
Mary Lee Mine	Beryllium	Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite	Past Producer	39.076, -105.429
J & S Group	Beryllium	Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite	Past Producer	39.079, -105.452
Black Prince Mine	Beryllium	Bertrandite, Beryl, Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite	Past Producer	39.103, -105.416
Meyers Ranch	Feldspar, Mica, Beryllium, Niobium (Columbium)	Beryl, Bismutite, Columbite, Microcline, Monazite	Past Producer	38.793, -105.596
Big Sheep Horn	Tantalum, Beryllium, Niobium (Columbium)	Beryl, Columbite, Tantalite	Producer	39.079, -105.579
Christie Ward-Lucky Thirteen 1&2	Feldspar, REE, Beryllium, Niobium (Columbium), Quartz, Mica	Beryl, Columbite, Thorite	Producer	38.992, -105.393
Blue-Green Lodes	REE, Garnet, Feldspar, Quartz, Mica, Beryllium	Beryl, Garnet	Producer	39.064, -105.523
Rose Dawn Mine	Feldspar, Mica	Beryl, Microcline, Muscovite	Past Producer	38.696, -105.483
Star Girl Mine	Feldspar, Mica	Beryl, Microcline, Muscovite	Past Producer	38.700, -105.481
Beryllium Lode Prospect	Mica, Feldspar, Beryllium	Beryl, Microcline, Muscovite	Occurrence	38.724, -105.498
Beryllium Lode	Feldspar	Beryl, Microcline, Muscovite, Plagioclase	Past Producer	38.726, -105.499
Meyers Ranch Mine	Niobium (Columbium), Tantalum, Mica, Beryllium	Beryl, Muscovite	Producer	38.800, -105.601
Missouri	Lead, Silver, Gold, Bismuth, Copper, Zinc	Bismuthinite, Chalcopyrite, Galena, Malachite, Pyrite, Silver, Tetrahedrite	Producer	39.518, -105.858
Copper King Mine	Gold, Copper	Bornite, Chalcopyrite, Gold, Muscovite, Scheelite	Past Producer	38.737, -105.580
West Tungsten Prospect	Tungsten	Bornite, Chalcopyrite, Scheelite	Occurrence	38.734, -105.523
Minerva J Mine	Beryllium	Cassiterite, Chalcopyrite, Covellite, Euclase, Galena, Molybdenite, Pyrite, Sphalerite, Uraninite, Wolframite	Occurrence	39.098, -105.420
Lucky Boy Prospect	Tungsten	Cassiterite, Scheelite, Wolframite	Occurrence	39.072, -105.376
Whale Mine	Copper, Lead, Gold, Silver	Chalcanthite, Chalcopyrite, Galena, Pyrite	Producer	39.527, -105.859
Garo Deposit	Vanadium, Radium, Uranium	Chalcocite, Chrysocolla, Covellite, Malachite, Tyuyamunite, Uranophane	Past Producer	39.096, -105.891
Blue Mountain Prospect	—	Chalcopyrite	Occurrence	38.940, -105.351
Apex Mine	Gold, Silver	Chalcopyrite, Covellite, Galena, Gold, Scheelite, Silver	Past Producer	39.042, -105.395
Betty Mine	Lead, Zinc, Copper	Chalcopyrite, Covellite, Galena, Malachite, Pyrite, Sphalerite	Producer	38.738, -105.564

Fossil collections

The Paleobiology Database lists 16 fossil collection records in Park County. These are research records, not public dig sites.

Nearby counties

Lake County · Summit County · Kit Carson County · Eagle County · Clear Creek County

Colorado mineral guides

Back to all Colorado counties.

Is It Legal to Collect Rocks on Public Land? BLM, Forest Service and National Park Rules

How we built this page: we counted named sites in the USGS Mineral Resources Data System (MRDS) for this area, left out sand, gravel, crushed stone, clay pits and unnamed sites, grouped them by Census county, and linked every site to its USGS record. We did not visit these sites, and MRDS does not tell you who owns the land or whether collecting is allowed.

Source: USGS Mineral Resources Data System (MRDS). USGS ceased systematic updates to MRDS around 2011, so status and details may be out of date. Each site links to its USGS record.

Updated October 2026

Rockhounding in Park County, Colorado

Sketch map

Apex Mine

Field cards: what kind of sites?

Mineral cards

Gold

Quartz

Silver

Copper

Mica

Pyrite

Garnet

Scheelite