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Mountain Lion Mine - Keystone vein, Magnolia District, Boulder Co., Colorado, USAi
Regional Level Types
Mountain Lion Mine - Keystone veinVein
Magnolia DistrictMining District
Boulder Co.County
ColoradoState
USACountry

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Key
Latitude & Longitude (WGS84):
39° 59' 27'' North , 105° 22' 11'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Tall Timber208 (2011)3.0km
Mountain Meadows274 (2011)3.8km
Sugarloaf261 (2011)4.3km
Crisman186 (2011)5.6km
Seven Hills121 (2011)6.0km


No description has been added for this locality. Can you add one?

Regions containing this locality

North America PlateTectonic Plate
Rocky Mountains, North AmericaMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


13 valid minerals. 1 (TL) - type locality of valid minerals.

Detailed Mineral List:

Calaverite
Formula: AuTe2
Reference: Minerals of Colorado (1997) Eckel, E. B.; U.S. Geological Survey Professional Paper 223
Chalcopyrite
Formula: CuFeS2
Reference: Minerals of Colorado (1997) E.B. Eckel
Coloradoite (TL)
Formula: HgTe
Type Locality:
Description: Closely intermixed with native tellurium and quartz. The type description of coloradoite was based on impure specimens from the Keystone and Mountain Lion mines in the Magnolia district and from the Smuggler mine in the Balarat district.
Reference: "Minerals of Colorado, updated & revised", p. 158, by Eckel, Edwin B., 1997
'Feldspar Group'
Reference: Emmons and Becker (1885) Statistics and Technology of the precious Metals. Census reports Tenth census. June 1, 1880, Volume 13 By United States. Census office. 10th census, 1880, United States. Census Office
Gold
Formula: Au
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; Emmons and Becker (1885) Statistics and Technology of the precious Metals. Census reports Tenth census. June 1, 1880, Volume 13 By United States. Census office. 10th census, 1880, United States. Census Office
Keystoneite
Formula: Mg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2O
Reference: Minerals of Colorado (1997) Eckel, E. B.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Emmons and Becker (1885) Statistics and Technology of the precious Metals. Census reports Tenth census. June 1, 1880, Volume 13 By United States. Census office. 10th census, 1880, United States. Census Office
Magnolite
Formula: (Hg+2)(Te4+O3)
Reference: Minerals of Colorado (1997) Eckel, E. B.
Mercury
Formula: Hg
Reference: Minerals of Colorado (1997) Eckel, E. B.
Molybdenite
Formula: MoS2
Reference: U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; U.S. Geological Survey Professional Paper 223; William Crowley Kelly, Edwin Newell Goddard (1969) Telluride Ores of Boulder County, Colorado. GSA Memoir 109.
Pyrite
Formula: FeS2
Reference: U.S. Geological Survey Professional Paper 223
Quartz
Formula: SiO2
Reference: Minerals of Colorado (1997) Eckel, E. B.; U.S. Geological Survey Professional Paper 223; Emmons and Becker (1885) Statistics and Technology of the precious Metals. Census reports Tenth census. June 1, 1880, Volume 13 By United States. Census office. 10th census, 1880, United States. Census Office
Roscoelite
Formula: K(V3+,Al)2(AlSi3O10)(OH)2
Reference: Minerals of Colorado (1997) E.B. Eckel; U.S. Geological Survey Professional Paper 223
Sylvanite
Formula: (Au,Ag)2Te4
Reference: Minerals of Colorado (1997) Eckel, E. B.
Tellurium
Formula: Te
Reference: Dana 6: 11; Dana 7:I:219.; U.S. Geological Survey Professional Paper 223

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Mercury1.AD.05Hg
Tellurium1.CC.10Te
Group 2 - Sulphides and Sulfosalts
Calaverite2.EA.10AuTe2
Chalcopyrite2.CB.10aCuFeS2
Coloradoite (TL)2.CB.05aHgTe
Molybdenite2.EA.30MoS2
Pyrite2.EB.05aFeS2
Sylvanite2.EA.05(Au,Ag)2Te4
Group 4 - Oxides and Hydroxides
Keystoneite4.JM.05Mg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2O
Magnolite4.JK.60(Hg+2)(Te4+O3)
Quartz4.DA.05SiO2
Group 9 - Silicates
Roscoelite9.EC.15K(V3+,Al)2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Feldspar 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
Gold1.1.1.1Au
Mercury1.1.7.1Hg
Semi-metals and non-metals
Tellurium1.3.4.2Te
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Coloradoite (TL)2.8.2.5HgTe
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Calaverite2.12.13.2AuTe2
Molybdenite2.12.10.1MoS2
Pyrite2.12.1.1FeS2
Sylvanite2.12.13.3(Au,Ag)2Te4
Group 34 - SELENITES, TELLURITES AND SULFITES
A(XO3)
Magnolite34.1.7.1(Hg+2)(Te4+O3)
A2(XO3)3·xH2O
Keystoneite34.3.2.3Mg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2O
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
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Feldspar Group'-
'Limonite'-(Fe,O,OH,H2O)

List of minerals for each chemical element

HHydrogen
H KeystoneiteMg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2O
H RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
H Limonite(Fe,O,OH,H2O)
OOxygen
O Magnolite(Hg2+)(Te4+O3)
O QuartzSiO2
O KeystoneiteMg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2O
O RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
O Limonite(Fe,O,OH,H2O)
MgMagnesium
Mg KeystoneiteMg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2O
AlAluminium
Al RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
SiSilicon
Si QuartzSiO2
Si RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
SSulfur
S MolybdeniteMoS2
S ChalcopyriteCuFeS2
S PyriteFeS2
KPotassium
K RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
VVanadium
V RoscoeliteK(V3+,Al)2(AlSi3O10)(OH)2
MnManganese
Mn KeystoneiteMg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2O
FeIron
Fe KeystoneiteMg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2O
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
Fe Limonite(Fe,O,OH,H2O)
NiNickel
Ni KeystoneiteMg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2O
CuCopper
Cu ChalcopyriteCuFeS2
MoMolybdenum
Mo MolybdeniteMoS2
AgSilver
Ag Sylvanite(Au,Ag)2Te4
TeTellurium
Te ColoradoiteHgTe
Te TelluriumTe
Te Magnolite(Hg2+)(Te4+O3)
Te KeystoneiteMg0.5Ni2+Fe3+(Te4+O3)3 · 4.5H2O
Te CalaveriteAuTe2
Te Sylvanite(Au,Ag)2Te4
AuGold
Au GoldAu
Au CalaveriteAuTe2
Au Sylvanite(Au,Ag)2Te4
HgMercury
Hg ColoradoiteHgTe
Hg Magnolite(Hg2+)(Te4+O3)
Hg MercuryHg

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Emmons and Becker (1885) Statistics and Technology of the precious Metals. Census reports Tenth census. June 1, 1880, Volume 13 By United States. Census office. 10th census, 1880, United States. Census Office.
Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 11.
Palache, C., Berman, H. & Frondel, C. (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, 834pp.: 219.
Kelly, William Crowley, Edwin Newell Goddard (1969), Telluride Ores of Boulder County, Colorado. Geological Society of America Memoir 109.
Eckel, E. B. (1997), Minerals of Colorado.
U.S. Geological Survey Professional Paper 223.

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