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Little Peter Mine, La Sal Quadrangle, San Juan Co., Utah, USA

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Latitude & Longitude (WGS84): 38° 20' 16'' North , 109° 5' 47'' West
Latitude & Longitude (decimal): 38.33805,-109.09652
GeoHash:G#: 9wf6j7nr6
Locality type:Mine
Köppen climate type:BSk : Cold semi-arid (steppe) climate


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Regions containing this locality

Rocky Mountains, North America

Mountain Range - 2,037 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


7 valid minerals.

Detailed Mineral List:

Carnotite
Formula: K2(UO2)2(VO4)2 · 3H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Corvusite
Formula: (Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Montroseite
Formula: (V3+,Fe3+)O(OH)
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Pascoite
Formula: Ca3(V10O28) · 17H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Roscoelite
Formula: K(V3+,Al)2(AlSi3O10)(OH)2
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Tyuyamunite
Formula: Ca(UO2)2(VO4)2 · 5-8H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Uraninite
Formula: UO2
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
'Carnotite'4.HB.05K2(UO2)2(VO4)2 · 3H2O
'Corvusite'4.HE.20(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
'Montroseite'4.FD.10(V3+,Fe3+)O(OH)
'Pascoite'4.HC.05Ca3(V10O28) · 17H2O
'Tyuyamunite'4.HB.25Ca(UO2)2(VO4)2 · 5-8H2O
'Uraninite'4.DL.05UO2
Group 9 - Silicates
'Roscoelite'9.EC.15K(V3+,Al)2(AlSi3O10)(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Montroseite6.1.1.4(V3+,Fe3+)O(OH)
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
AB2(XO4)2·xH2O, containing (UO2)2+
Carnotite40.2a.28.1K2(UO2)2(VO4)2 · 3H2O
Tyuyamunite40.2a.26.1Ca(UO2)2(VO4)2 · 5-8H2O
Group 47 - VANADIUM OXYSALTS
Anhydrous Vanadium Oxysalts Containing Hydroxyl or Halogen
Pascoite47.2.1.1Ca3(V10O28) · 17H2O
Hydrated Normal Vanadium Oxysalts
Corvusite47.3.2.2(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Roscoelite71.2.2a.4K(V3+,Al)2(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
H CarnotiteK2(UO2)2(VO4)2 · 3H2O
H Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
H Montroseite(V3+,Fe3+)O(OH)
H PascoiteCa3(V10O28) · 17H2O
H RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
H TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
OOxygen
O CarnotiteK2(UO2)2(VO4)2 · 3H2O
O Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
O Montroseite(V3+,Fe3+)O(OH)
O PascoiteCa3(V10O28) · 17H2O
O RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
O TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
O UraniniteUO2
NaSodium
Na Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
AlAluminium
Al RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
SiSilicon
Si RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
KPotassium
K CarnotiteK2(UO2)2(VO4)2 · 3H2O
K Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
K RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
CaCalcium
Ca Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
Ca PascoiteCa3(V10O28) · 17H2O
Ca TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
VVanadium
V CarnotiteK2(UO2)2(VO4)2 · 3H2O
V Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
V Montroseite(V3+,Fe3+)O(OH)
V PascoiteCa3(V10O28) · 17H2O
V RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
V TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
FeIron
Fe Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
Fe Montroseite(V3+,Fe3+)O(OH)
UUranium
U CarnotiteK2(UO2)2(VO4)2 · 3H2O
U TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
U UraniniteUO2

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

Late Jurassic
145 - 163.5 Ma



ID: 2899701
Morrison Formation (Brushy Basin and Salt Wash Members)

Age: Jurassic (145 - 163.5 Ma)

Stratigraphic Name: Brushy Basin Member; Salt Wash Member

Comments: continental environment, braided rivers and streams, overbank mudstones. dinosaur fossils

Lithology: Major:{sandstone mudstone}, Minor:{conglomerate}

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]

Late Jurassic
145 - 163.5 Ma



ID: 2180558
Salt Wash Member of Morrison Formation

Age: Jurassic (145 - 163.5 Ma)

Stratigraphic Name: Salt Wash Member

Description: Interbedded lenses of light-brown, white, yellow-gray, and verypale-orange sandstone and medium red-brown and green-gray siltstone and mudstone; has local minor gray limestone and conglomeratic sandstone; sandstones are mostly medium grained with moderate sorting, however, some are fine grained and silty, others are conglomeratic; some are well sorted and others poorly sorted; conglomeratic sandstone is common at the base of the thick lenticular sandstone beds; sandstone lenses are thick and resistant, siltstone and mudstone form slopes or recesses between sandstone lenses; upper sandstone lens is generally mineralized with uranium and vanadium; 58 to 120 meters (190-400 ft) thick, thickening to the south; Upper Jurassic.

Reference: Doelling, H.H. Geologic map of the La Sal 30'x60'quadrangle, San Juan, Wayne, and Garfield Counties, Utah and Montrose and San Miguel Counties, Colorado. Utah Geological Survey. [31]

Early Jurassic - Late Triassic
174.1 - 237 Ma



ID: 3185972
Mesozoic sedimentary rocks

Age: Mesozoic (174.1 - 237 Ma)

Lithology: Sandstone-conglomerate

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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