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Gray Dawn Mine (Little Don Mine; Grey Dawn), Paradox Valley District, Paradox Valley, San Juan Co., Utah, USA

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Latitude & Longitude (WGS84): 38° 20' 16'' North , 109° 5' 47'' West
Latitude & Longitude (decimal): 38.33779,-109.09649
GeoHash:G#: 9wf6j7nmg
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


27 valid minerals.

Detailed Mineral List:

Azurite
Formula: Cu3(CO3)2(OH)2
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Carnotite
Formula: K2(UO2)2(VO4)2 · 3H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chalcocite
Formula: Cu2S
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Chalcopyrite
Formula: CuFeS2
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Coffinite
Formula: U(SiO4) · nH2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Corvusite
Formula: (Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Covellite
Formula: CuS
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Eucairite
Formula: AgCuSe
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Galena
Formula: PbS
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
'Gummite'
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Hewettite
Formula: CaV6O16 · 9H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Malachite
Formula: Cu2(CO3)(OH)2
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Metahewettite
Formula: CaV6O16 · 3H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Metatorbernite
Formula: Cu(UO2)2(PO4)2 · 8H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Metatyuyamunite
Formula: Ca(UO2)2(VO4)2 · 3-5H2O
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
Nováčekite-I
Formula: Mg(UO2)2(AsO4)2 · 12H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Phosphuranylite
Formula: (H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Pyrite
Formula: FeS2
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
Saléeite
Formula: Mg(UO2)2(PO4)2 · 10H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Sphalerite
Formula: ZnS
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Tyuyamunite
Formula: Ca(UO2)2(VO4)2 · 5-8H2O
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Uraninite
Formula: UO2
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Uraninite var: Pitchblende
Formula: UO2
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Uranophane-β
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah
Uranospathite
Formula: (Al,☐)(UO2)2(PO4)2F · 20(H2O,F)
Reference: UGMS Bull 117 Minerals and Mineral Localities of Utah

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Chalcocite'2.BA.05Cu2S
'Chalcopyrite'2.CB.10aCuFeS2
'Covellite'2.CA.05aCuS
'Eucairite'2.BA.50AgCuSe
'Galena'2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
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
'Hewettite'4.HE.15CaV6O16 · 9H2O
'Metahewettite'4.HE.15CaV6O16 · 3H2O
'Metatyuyamunite'4.HB.25Ca(UO2)2(VO4)2 · 3-5H2O
'Montroseite'4.FD.10(V3+,Fe3+)O(OH)
Tyuyamunite4.HB.25Ca(UO2)2(VO4)2 · 5-8H2O
Uraninite4.DL.05UO2
var: Pitchblende4.DL.05UO2
Group 5 - Nitrates and Carbonates
'Azurite'5.BA.05Cu3(CO3)2(OH)2
'Malachite'5.BA.10Cu2(CO3)(OH)2
Group 8 - Phosphates, Arsenates and Vanadates
'Metatorbernite'8.EB.10Cu(UO2)2(PO4)2 · 8H2O
'Nováčekite-I'8.EB.05Mg(UO2)2(AsO4)2 · 12H2O
'Phosphuranylite'8.EC.10(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
Saléeite8.EB.05Mg(UO2)2(PO4)2 · 10H2O
Torbernite8.EB.05Cu(UO2)2(PO4)2 · 12H2O
Uranospathite8.EB.25(Al,☐)(UO2)2(PO4)2F · 20(H2O,F)
Group 9 - Silicates
'Coffinite'9.AD.30U(SiO4) · nH2O
Roscoelite9.EC.15K(V3+,Al)2(AlSi3O10)(OH)2
Uranophane9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
Uranophane-β9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
Unclassified Minerals, Rocks, etc.
'Gummite'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
Eucairite2.4.6.2AgCuSe
AmXp, with m:p = 1:1
Covellite2.8.12.1CuS
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
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 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
AB2(XO4)2·xH2O, containing (UO2)2+
Carnotite40.2a.28.1K2(UO2)2(VO4)2 · 3H2O
Metatorbernite40.2a.13.2Cu(UO2)2(PO4)2 · 8H2O
Metatyuyamunite40.2a.26.2Ca(UO2)2(VO4)2 · 3-5H2O
Nováčekite-I40.2a.10.1Mg(UO2)2(AsO4)2 · 12H2O
Saléeite40.2a.11.1Mg(UO2)2(PO4)2 · 10H2O
Torbernite40.2a.13.1Cu(UO2)2(PO4)2 · 12H2O
Tyuyamunite40.2a.26.1Ca(UO2)2(VO4)2 · 5-8H2O
Uranospathite40.2a.22.1(Al,☐)(UO2)2(PO4)2F · 20(H2O,F)
Group 42 - HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
(AB)5(XO4)2Zq·xH2O
Phosphuranylite42.4.8.1(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
Group 47 - VANADIUM OXYSALTS
Hydrated Normal Vanadium Oxysalts
Corvusite47.3.2.2(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
Hewettite47.3.1.1CaV6O16 · 9H2O
Metahewettite47.3.1.2CaV6O16 · 3H2O
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Coffinite51.5.2.4U(SiO4) · nH2O
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
Uranophane-β53.3.1.9Ca(UO2)2(SiO3OH)2 · 5H2O
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
Unclassified Minerals, Rocks, etc.
'Gummite'-
Uraninite
var: Pitchblende
-UO2

List of minerals for each chemical element

HHydrogen
H AzuriteCu3(CO3)2(OH)2
H CarnotiteK2(UO2)2(VO4)2 · 3H2O
H CoffiniteU(SiO4) · nH2O
H Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
H HewettiteCaV6O16 · 9H2O
H MalachiteCu2(CO3)(OH)2
H MetahewettiteCaV6O16 · 3H2O
H MetatorberniteCu(UO2)2(PO4)2 · 8H2O
H MetatyuyamuniteCa(UO2)2(VO4)2 · 3-5H2O
H Montroseite(V3+,Fe3+)O(OH)
H Nováčekite-IMg(UO2)2(AsO4)2 · 12H2O
H Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
H RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
H SaléeiteMg(UO2)2(PO4)2 · 10H2O
H TorberniteCu(UO2)2(PO4)2 · 12H2O
H TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
H UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
H Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O
H Uranospathite(Al,☐)(UO2)2(PO4)2F · 20(H2O,F)
CCarbon
C AzuriteCu3(CO3)2(OH)2
C MalachiteCu2(CO3)(OH)2
OOxygen
O AzuriteCu3(CO3)2(OH)2
O CarnotiteK2(UO2)2(VO4)2 · 3H2O
O CoffiniteU(SiO4) · nH2O
O Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
O HewettiteCaV6O16 · 9H2O
O MalachiteCu2(CO3)(OH)2
O MetahewettiteCaV6O16 · 3H2O
O MetatorberniteCu(UO2)2(PO4)2 · 8H2O
O MetatyuyamuniteCa(UO2)2(VO4)2 · 3-5H2O
O Montroseite(V3+,Fe3+)O(OH)
O Nováčekite-IMg(UO2)2(AsO4)2 · 12H2O
O Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
O Uraninite (var: Pitchblende)UO2
O RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
O SaléeiteMg(UO2)2(PO4)2 · 10H2O
O TorberniteCu(UO2)2(PO4)2 · 12H2O
O TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
O UraniniteUO2
O UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
O Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O
O Uranospathite(Al,☐)(UO2)2(PO4)2F · 20(H2O,F)
FFluorine
F Uranospathite(Al,☐)(UO2)2(PO4)2F · 20(H2O,F)
NaSodium
Na Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
MgMagnesium
Mg Nováčekite-IMg(UO2)2(AsO4)2 · 12H2O
Mg SaléeiteMg(UO2)2(PO4)2 · 10H2O
AlAluminium
Al RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
Al Uranospathite(Al,☐)(UO2)2(PO4)2F · 20(H2O,F)
SiSilicon
Si CoffiniteU(SiO4) · nH2O
Si RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
Si UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Si Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O
PPhosphorus
P MetatorberniteCu(UO2)2(PO4)2 · 8H2O
P Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
P SaléeiteMg(UO2)2(PO4)2 · 10H2O
P TorberniteCu(UO2)2(PO4)2 · 12H2O
P Uranospathite(Al,☐)(UO2)2(PO4)2F · 20(H2O,F)
SSulfur
S ChalcociteCu2S
S ChalcopyriteCuFeS2
S CovelliteCuS
S GalenaPbS
S PyriteFeS2
S SphaleriteZnS
KPotassium
K CarnotiteK2(UO2)2(VO4)2 · 3H2O
K Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
K Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
K RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
CaCalcium
Ca Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
Ca HewettiteCaV6O16 · 9H2O
Ca MetahewettiteCaV6O16 · 3H2O
Ca MetatyuyamuniteCa(UO2)2(VO4)2 · 3-5H2O
Ca Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
Ca TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
Ca UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Ca Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O
VVanadium
V CarnotiteK2(UO2)2(VO4)2 · 3H2O
V Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
V HewettiteCaV6O16 · 9H2O
V MetahewettiteCaV6O16 · 3H2O
V MetatyuyamuniteCa(UO2)2(VO4)2 · 3-5H2O
V Montroseite(V3+,Fe3+)O(OH)
V RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
V TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
FeIron
Fe ChalcopyriteCuFeS2
Fe Corvusite(Na,K,Ca,Mg)2(V5+,V4+,Fe2+)8O20 · 6-10H2O
Fe Montroseite(V3+,Fe3+)O(OH)
Fe PyriteFeS2
CuCopper
Cu AzuriteCu3(CO3)2(OH)2
Cu ChalcociteCu2S
Cu ChalcopyriteCuFeS2
Cu CovelliteCuS
Cu EucairiteAgCuSe
Cu MalachiteCu2(CO3)(OH)2
Cu MetatorberniteCu(UO2)2(PO4)2 · 8H2O
Cu TorberniteCu(UO2)2(PO4)2 · 12H2O
ZnZinc
Zn SphaleriteZnS
AsArsenic
As Nováčekite-IMg(UO2)2(AsO4)2 · 12H2O
SeSelenium
Se EucairiteAgCuSe
AgSilver
Ag EucairiteAgCuSe
PbLead
Pb GalenaPbS
UUranium
U CarnotiteK2(UO2)2(VO4)2 · 3H2O
U CoffiniteU(SiO4) · nH2O
U MetatorberniteCu(UO2)2(PO4)2 · 8H2O
U MetatyuyamuniteCa(UO2)2(VO4)2 · 3-5H2O
U Nováčekite-IMg(UO2)2(AsO4)2 · 12H2O
U Phosphuranylite(H3O)3KCa(UO2)7(PO4)4O4 · 8H2O
U Uraninite (var: Pitchblende)UO2
U SaléeiteMg(UO2)2(PO4)2 · 10H2O
U TorberniteCu(UO2)2(PO4)2 · 12H2O
U TyuyamuniteCa(UO2)2(VO4)2 · 5-8H2O
U UraniniteUO2
U UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
U Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O
U Uranospathite(Al,☐)(UO2)2(PO4)2F · 20(H2O,F)

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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