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Allard Tunnel Occurrence (Audrey Nos. 1-2; Protection; Ruby Nos. 1-95; Shorty Nos. 1-4; Jane Nos. 1-4; Minnie), La Plata District (California District), La Plata Co., Colorado, USAi
Regional Level Types
Allard Tunnel Occurrence (Audrey Nos. 1-2; Protection; Ruby Nos. 1-95; Shorty Nos. 1-4; Jane Nos. 1-4; Minnie)Occurrence
La Plata District (California District)Mining District
La Plata Co.County
ColoradoState
USACountry

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Key
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Latitude & Longitude (WGS84): 37° 24' 23'' North , 108° 5' 18'' West
Latitude & Longitude (decimal): 37.40639,-108.08833
GeoHash:G#: 9wehu3skp
Locality type:Occurrence
Köppen climate type:Dsb : Warm, dry-summer continental climate
Nearest Settlements:
PlacePopulationDistance
Mancos1,380 (2017)19.0km
Durango18,006 (2017)23.5km
Rico255 (2017)32.2km
Dolores963 (2017)37.5km
Cortez8,715 (2017)44.4km


REF:Unpatented Claims: Copper Hill; North Star; Morning Star; Jeanie; Esmerelda; Punkey; Sandra; Gail; Marge Nos. 1-2; Madden No. 1; Bill; Northwesterner; Northerner; Hazel
Deposit:: SCHWARTZ, G.M., AND OTHERS, 1949, DISSEMINATED CHALCOPYRITE WITH PLATINUM AND PALLADIUM, IN ECKEL, E.B., AND OTHERS, GEOLOGY AND ORE DEPOSITS OF THE LA PLATA DISTRICT, COLORADO: USGS PROF. PAPER 219, P. 63-65, 84-85.
Deposit:: ECKEL, E.B., 193
Commodities (Major) - Copper, Silver; (Trace) - PGE, Lead
Development Status: Occurrence
Deposit Model: 53: Porphyry Cu
Host Rock Unit: Pony Express Limestone Member Of Wanakah Formation
Structure: La Plata Dome, Syenite Stock, San Juan Uplift, Four Corners Platform
Host Rock: Syenite
Tectonic Structure: Central Cordillera (Southern Rocky Mtns)

Regions containing this locality

North America PlateTectonic Plate
Rocky Mountains, North AmericaMountain Range

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


25 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:

Arsenopyrite
Formula: FeAsS
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Azurite
Formula: Cu3(CO3)2(OH)2
Reference: Minerals of Colorado (1997) E.B. Eckel p308
Bornite
Formula: Cu5FeS4
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
Calcite
Formula: CaCO3
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Chalcocite
Formula: Cu2S
Reference: Minerals of Colorado (1997) E.B. Eckel p308
Chalcopyrite
Formula: CuFeS2
Reference: Minerals of Colorado (1997) E.B. Eckel p308
'Chlorite Group'
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Copper
Formula: Cu
Reference: Minerals of Colorado (1997) E.B. Eckel p308
Domeykite
Formula: Cu3As
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
Enargite
Formula: Cu3AsS4
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
Fluorite
Formula: CaF2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Galena
Formula: PbS
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Hematite
Formula: Fe2O3
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
Kaolinite
Formula: Al2(Si2O5)(OH)4
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Malachite
Formula: Cu2(CO3)(OH)2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.
Marcasite
Formula: FeS2
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
Muscovite var: Sericite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
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.
Sphalerite
Formula: ZnS
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
Tennantite
Formula: Cu6[Cu4(Fe,Zn)2]As4S13
Reference: Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
Reference: Minerals of Colorado (1997) E.B. Eckel
Uraninite
Formula: UO2
Reference: Minerals of Colorado (1997) E.B. Eckel

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
Arsenopyrite2.EB.20FeAsS
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Domeykite2.AA.10bCu3As
Enargite2.KA.05Cu3AsS4
Galena2.CD.10PbS
Marcasite2.EB.10aFeS2
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Tennantite2.GB.05Cu6[Cu4(Fe,Zn)2]As4S13
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Uraninite4.DL.05UO2
Group 5 - Nitrates and Carbonates
Azurite5.BA.05Cu3(CO3)2(OH)2
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 8 - Phosphates, Arsenates and Vanadates
Torbernite8.EB.05Cu(UO2)2(PO4)2 · 12H2O
Group 9 - Silicates
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var: Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Limonite'-(Fe,O,OH,H2O)

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Copper1.1.1.3Cu
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 3:1
Domeykite2.2.2.1Cu3As
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmXp, with m:p = 1:1
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
Arsenopyrite2.12.4.1FeAsS
Marcasite2.12.2.1FeS2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
ø = 4
Enargite3.2.1.1Cu3AsS4
3 <ø < 4
Tennantite3.3.6.2Cu6[Cu4(Fe,Zn)2]As4S13
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
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+
Torbernite40.2a.13.1Cu(UO2)2(PO4)2 · 12H2O
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
Kaolinite-Al2(Si2O5)(OH)4
'Limonite'-(Fe,O,OH,H2O)
Muscovite
var: Sericite
-KAl2(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
H MalachiteCu2(CO3)(OH)2
H Limonite(Fe,O,OH,H2O)
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H AzuriteCu3(CO3)2(OH)2
H TorberniteCu(UO2)2(PO4)2 · 12H2O
H KaoliniteAl2(Si2O5)(OH)4
H Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
C CalciteCaCO3
C MalachiteCu2(CO3)(OH)2
C AzuriteCu3(CO3)2(OH)2
OOxygen
O CalciteCaCO3
O MagnetiteFe2+Fe23+O4
O QuartzSiO2
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O MalachiteCu2(CO3)(OH)2
O Limonite(Fe,O,OH,H2O)
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O AzuriteCu3(CO3)2(OH)2
O TorberniteCu(UO2)2(PO4)2 · 12H2O
O UraniniteUO2
O HematiteFe2O3
O KaoliniteAl2(Si2O5)(OH)4
O Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
O MuscoviteKAl2(AlSi3O10)(OH)2
FFluorine
F FluoriteCaF2
MgMagnesium
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Al KaoliniteAl2(Si2O5)(OH)4
Al Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Al MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Si QuartzSiO2
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Si KaoliniteAl2(Si2O5)(OH)4
Si Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
PPhosphorus
P TorberniteCu(UO2)2(PO4)2 · 12H2O
SSulfur
S PyriteFeS2
S GalenaPbS
S ChalcociteCu2S
S ChalcopyriteCuFeS2
S ArsenopyriteFeAsS
S BorniteCu5FeS4
S EnargiteCu3AsS4
S MarcasiteFeS2
S SphaleriteZnS
S TennantiteCu6[Cu4(Fe,Zn)2]As4S13
KPotassium
K Muscovite (var: Sericite)KAl2(AlSi3O10)(OH)2
K MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca CalciteCaCO3
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca FluoriteCaF2
FeIron
Fe PyriteFeS2
Fe MagnetiteFe2+Fe23+O4
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe Limonite(Fe,O,OH,H2O)
Fe ChalcopyriteCuFeS2
Fe ArsenopyriteFeAsS
Fe BorniteCu5FeS4
Fe HematiteFe2O3
Fe MarcasiteFeS2
CuCopper
Cu MalachiteCu2(CO3)(OH)2
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu CopperCu
Cu ChalcociteCu2S
Cu AzuriteCu3(CO3)2(OH)2
Cu ChalcopyriteCuFeS2
Cu TorberniteCu(UO2)2(PO4)2 · 12H2O
Cu BorniteCu5FeS4
Cu DomeykiteCu3As
Cu EnargiteCu3AsS4
Cu TennantiteCu6[Cu4(Fe,Zn)2]As4S13
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
As DomeykiteCu3As
As EnargiteCu3AsS4
As TennantiteCu6[Cu4(Fe,Zn)2]As4S13
PbLead
Pb GalenaPbS
UUranium
U TorberniteCu(UO2)2(PO4)2 · 12H2O
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

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]

Permian
251.902 - 298.9 Ma



ID: 2718363
Cutler Fm

Age: Phanerozoic (251.902 - 298.9 Ma)

Stratigraphic Name: Cutler Formation

Description: Arkosic sandstone, siltstone, and conglomerate

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:{arkose,siltstone,conglomerate}, Minor:{clastic}

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]

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Werle, J.L., Ikramuddin, M., and Mutschler, F.E. (1984): Allard stock, La Plata Mountains, Colorado — an alkaline rock-hosted porphyry copper-precious metal deposit. Canadian Journal of Earth Sciences 21, 630–641.
- Singer, D.A., Berger, V.I., and Moring, B.C. (2008): Porphyry copper deposits of the world: Database and grade and tonnage models, 2008. US Geological Survey Open-File Report 2008-1155.


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