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Trace Elements Pits, Maybell Mines, Maybell District, Moffat Co., Colorado, USAi
Regional Level Types
Trace Elements PitsGroup of Pits
Maybell MinesGroup of Mines
Maybell DistrictMining District
Moffat Co.County
ColoradoState
USACountry

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Key
Lock Map
Latitude & Longitude (WGS84):
40° 32' 50'' North , 107° 59' 40'' West
Latitude & Longitude (decimal):
Locality type:
Group of Pits
Nearest Settlements:
PlacePopulationDistance
Craig8,844 (2017)38.0km


REF:Deposit:: NELSON-MOORE, J.L., COLLINS, D.B., AND HORNBAKER, A.L., 1978, RADIOACTIVE MINERAL OCCURRENCES OF COLORADO AND BIBLIOGRAPHY; COLORADO GEOL. SURVEY BULL. 40, P. 268, 271.
Deposit:: MCKAY, E.J., AND BERGIN, M.J., 1974, GEOLOGIC MAP OF THE MAYBELL
Commodities (Major) - Uranium; (Minor) - Molybdenum
Development Status: Producer
Host Rock Unit: Alluvium
Structure: Washakie Basin, Axial Basin, Lay Syncline, Maybell Monocline, Normal Fault (Unnamed)
Host Rock: Sandstone
Tectonic Structure: Colorado Platform

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

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


Mineral List


9 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Calcite
Formula: CaCO3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Carnotite
Formula: K2(UO2)2(VO4)2 · 3H2O
Habit: Encrusttations on/in Sandstone, Limestone and Quartz.
Colour: Yellow, Bright Yellow
Description: Carnotite in the Maybell District is vibrant Yellow in Color. Crusts of Carnotite frequent the Sandstone, Limestone and Quartz which embody the majority of the bedrock. Not all Carnotite exhibits formations in this district, banding in the native sandstone and limestone is frequent. Confirmed, Maneotis:2009.
Reference: Maneotis, 2009
'Clays'
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Gypsum
Formula: CaSO4 · 2H2O
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Ilsemannite
Formula: Mo3O8 · nH2O
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Jarosite
Formula: KFe3+ 3(SO4)2(OH)6
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Jordisite
Formula: MoS2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Pyrite
Formula: FeS2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Quartz
Formula: SiO2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Jordisite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Carnotite4.HB.05K2(UO2)2(VO4)2 · 3H2O
Ilsemannite4.FJ.15Mo3O8 · nH2O
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Gypsum7.CD.40CaSO4 · 2H2O
Jarosite7.BC.10KFe3+ 3(SO4)2(OH)6
Group 9 - Silicates
Uranophane9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
Unclassified Minerals, Rocks, etc.
'Clays'-
'Limonite'-(Fe,O,OH,H2O)

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Jordisite2.12.11.1MoS2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
Miscellaneous
Ilsemannite4.6.3.1Mo3O8 · nH2O
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)2(XO4)Zq
Jarosite30.2.5.1KFe3+ 3(SO4)2(OH)6
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
AB2(XO4)2·xH2O, containing (UO2)2+
Carnotite40.2a.28.1K2(UO2)2(VO4)2 · 3H2O
Group 53 - NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations
Insular SiO4 Groups and Other Anions of Complex Cations with (UO2)
Uranophane53.3.1.2Ca(UO2)2(SiO3OH)2 · 5H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Clays'-
'Limonite'-(Fe,O,OH,H2O)

List of minerals for each chemical element

HHydrogen
H CarnotiteK2(UO2)2(VO4)2 · 3H2O
H IlsemanniteMo3O8 · nH2O
H UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
H Limonite(Fe,O,OH,H2O)
H GypsumCaSO4 · 2H2O
H JarositeKFe3+ 3(SO4)2(OH)6
CCarbon
C CalciteCaCO3
OOxygen
O CarnotiteK2(UO2)2(VO4)2 · 3H2O
O IlsemanniteMo3O8 · nH2O
O UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
O Limonite(Fe,O,OH,H2O)
O GypsumCaSO4 · 2H2O
O CalciteCaCO3
O QuartzSiO2
O JarositeKFe3+ 3(SO4)2(OH)6
SiSilicon
Si UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Si QuartzSiO2
SSulfur
S JordisiteMoS2
S GypsumCaSO4 · 2H2O
S PyriteFeS2
S JarositeKFe3+ 3(SO4)2(OH)6
KPotassium
K CarnotiteK2(UO2)2(VO4)2 · 3H2O
K JarositeKFe3+ 3(SO4)2(OH)6
CaCalcium
Ca UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Ca GypsumCaSO4 · 2H2O
Ca CalciteCaCO3
VVanadium
V CarnotiteK2(UO2)2(VO4)2 · 3H2O
FeIron
Fe Limonite(Fe,O,OH,H2O)
Fe PyriteFeS2
Fe JarositeKFe3+ 3(SO4)2(OH)6
MoMolybdenum
Mo IlsemanniteMo3O8 · nH2O
Mo JordisiteMoS2
UUranium
U CarnotiteK2(UO2)2(VO4)2 · 3H2O
U UranophaneCa(UO2)2(SiO3OH)2 · 5H2O

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Pliocene - Miocene
2.588 - 23.03 Ma



ID: 3026357
Browns Park Fm

Age: Neogene (2.588 - 23.03 Ma)

Stratigraphic Name: Browns Park Formation

Description: Sandstone and siltstone; west of Park Range

Comments: Original map source: Green, G.N., 1992, The Digital Geologic Map of Colorado in ARC/INFO Format: U.S. Geological Survey Open-File Report 92-0507, 9 p., scale 1:500,000.

Lithology: Major:{sandstone,siltstone}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Eocene
33.9 - 56 Ma



ID: 3190876
Cenozoic sedimentary rocks

Age: Eocene (33.9 - 56 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License


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