RockWoof
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

Iron Bridge (Past Producer)White River Cliff (Producer)Staley Mine (Past Producer)East Fork (Producer)Cathedral Bluffs (Producer)Piceance Creek Basin Saline Deposits (Producer)Shylo No.1 (Unknown)Butterfly Group + 18 more nearby (Producer)Guy Stealy Claims + 2 more nearby (Occurrence)Unnamed Gold Prospect (Occurrence)
Past ProducerProducerProspectOccurrenceStatus unknown
10 paw pins; nearby sites are grouped into one pin. Hover or tap a pin for the site name. 1 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

Unnamed Gold Prospect

We picked it because its USGS record mentions 1 gem or collectible mineral (Gold) and 1 of our card minerals overall. No other named site here scores as high on both counts. USGS lists it as occurrence for Gold. Minerals mentioned: Gold. Approx. location 40.112, -107.183. 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?

18
Past Producer

Produced ore or material at some point in the past.

7
Producer

Was producing when the record was made.

5
Occurrence

The mineral was noted here, without development.

1
Unknown

Status not recorded.

Status terms come from USGS MRDS records.

Mineral cards

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

Minerals recorded here

Tyuyamunite 9Carnotite 8Dawsonite 1Nahcolite 1

Commodities

Uranium 23Vanadium 16Zeolites 5Calcium 1Sodium 1Copper 1Gold 1

Sites

SiteCommodityMinerals recordedStatusApprox. location
Caywood #1, #2Uranium, Vanadium, CopperCarnotiteOccurrence40.114, -107.717
Butterfly GroupVanadium, UraniumCarnotite, TyuyamuniteProducer40.122, -107.671
Burrell Nos. 1-3 ClaimsUranium, VanadiumCarnotite, TyuyamunitePast Producer40.119, -107.668
Burrell No. 5 ClaimUranium, VanadiumCarnotite, TyuyamunitePast Producer40.114, -107.660
Shylo GroupUranium, VanadiumCarnotite, TyuyamunitePast Producer40.114, -107.660
Coal Creek No. 1 ClaimUranium, VanadiumCarnotite, TyuyamunitePast Producer40.114, -107.660
S & G No. 4 ClaimUranium, VanadiumCarnotite, TyuyamunitePast Producer40.084, -107.549
Columbine Nos. 1-4 ClaimsUranium, VanadiumCarnotite, TyuyamunitePast Producer40.114, -107.678
Piceance Creek Basin Saline DepositsCalcium, SodiumDawsonite, NahcoliteProducer39.957, -108.360
Last Day ClaimUranium, VanadiumTyuyamunitePast Producer40.129, -107.698
Windy Point No. 1 ClaimUranium, VanadiumTyuyamunitePast Producer40.129, -107.698
Guy Stealy ClaimsUranium—Occurrence40.050, -107.517
Marvine View No. 10 ClaimUranium, Vanadium—Past Producer40.114, -107.678
Naomi Ann ClaimUranium, Vanadium—Past Producer40.129, -107.717
Guy Stealey ClaimsUranium, Vanadium—Producer40.069, -107.532
Jerry ZocholUranium, Vanadium—Occurrence40.128, -107.717
MeekerUranium, Vanadium—Occurrence40.128, -107.698
Brown GroupVanadium, Uranium—Past Producer40.114, -107.660
Unnamed Gold ProspectGold—Occurrence40.112, -107.183
Shylo No.1Uranium—Unknown40.127, -107.781
ButterflyUranium—Past Producer40.129, -107.671
Cathedral BluffsZeolites—Producer39.860, -108.588
East ForkZeolites—Producer40.021, -108.590
Rio Blanco——Past Producer39.731, -107.935
Windy Point No. 1Uranium—Past Producer40.131, -107.695
ColumbineUranium—Past Producer40.117, -107.676
Iron BridgeZeolites—Past Producer40.041, -109.020
White River CliffZeolites—Producer40.071, -108.962
MidnightUranium—Producer40.121, -107.676
Coal Creek No. 1Uranium—Past Producer40.119, -107.669
Staley MineZeolites—Past Producer40.160, -108.705

Fossil collections

The Paleobiology Database lists 38 fossil collection records in Rio Blanco County. These are research records, not public dig sites.

Nearby counties

Garfield County · Moffat County · Routt County · Eagle County · Pitkin County

Colorado mineral guides

Back to all Colorado counties.

Related articles

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