REF:Deposit:: NELSON-MOORE, J.L., COLLINS, D.B., AND HORNBAKER, A.L., 1978 RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY: CGS BULL. 40, P. 270.
Deposit:: TWETO, OGDEN, 1976, GEOLOGIC MAP OF THE CRAIG 1DEGX2DEG QUADRANGLE, NORTHWESTERN COLORAD
Commodities (Major) - Vanadium, Uranium
Development Status: Past Producer
Host Rock Unit: Oswaldo Formation
Structure: Lay Syncline, Maybell Monocline, Washakie Basin
Host Rock: Sandstone
Tectonic Structure: Colorado Platform

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.

ⓘ Uranium

ⓘ Vanadium

Mineral List

ⓘ Coffinite

ⓘ Uraninite

2 valid minerals.

Rock Types Recorded

Select Rock List Type

Alphabetical List Tree Diagram

ⓘ Sandstone

Detailed Mineral List:

ⓘ Coffinite

Formula: U(SiO₄) · nH₂O

References:

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

ⓘ Uraninite

Formula: UO₂

References:

(2005) Mineral Resources Data System (MRDS), US Geological Survey.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ	Uraninite	4.DL.05	UO₂
Group 9 - Silicates
ⓘ	Coffinite	9.AD.30	U(SiO₄) · nH₂O

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Coffinite	U(SiO₄) · nH₂O
O	Oxygen
O	ⓘ Coffinite	U(SiO₄) · nH₂O
O	ⓘ Uraninite	UO₂
Si	Silicon
Si	ⓘ Coffinite	U(SiO₄) · nH₂O
U	Uranium
U	ⓘ Coffinite	U(SiO₄) · nH₂O
U	ⓘ Uraninite	UO₂

Other Regions, Features and Areas containing this locality

North AmericaContinent

North America PlateTectonic Plate

USA

Green River FormationFormation
Western Phosphate fieldMineral Province

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Johnson Lease, Maybell Mining District, Moffat County, Colorado, USAiRegional Level TypesJohnson LeaseMine Maybell Mining DistrictMining District Moffat CountyCounty ColoradoState USACountry function showexplain() { $("#locexplain").toggle(); if (typeof movemap === "function") movemap(); }