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Continental Chief Mine, Dyer Mountain, Horseshoe District, Mosquito Range, Lake Co., Colorado, USAi
Regional Level Types
Continental Chief MineMine
Dyer MountainMountain
Horseshoe DistrictMining District
Mosquito RangeMountain Range
Lake Co.County
ColoradoState
USACountry

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Key
Latitude & Longitude (WGS84):
39° 13' 57'' North , 106° 10' 31'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Leadville2,644 (2017)10.3km
Leadville North1,794 (2011)11.2km
Alma277 (2017)11.2km
Fairplay681 (2017)15.0km
Twin Lakes171 (2011)24.4km


A former Ag-Au-Pb-Zn-Cu occurrence/mine located in the SW¼ sec. 25, T9S, R79W, 6th. Principal Meridian, 1.0 km (0.6 mile) SE of Dyer Mountain, in the Iowa Amphitheater at the head of Iowa Gulch, 6 miles S of Leadville, on private land. MRDS database stated accuracy for this location is 100 meters.

NOTE: USGS MRDS database file #10009438 states that this mine is in the Horseshoe District.

Mineralization is replacement and vein deposits (Mineral occurrence model information: Model code: 72; USGS model code: 19a; Deposit model name: polymetallic replacement; Mark3 model number: 47), hosted in the Leadville Dolomite. Local rocks include Laramide intrusive rocks.

Workings include unspecified underground openings (the topo map reflects 1 adit symbol at this point).

Reported production was valued at $3,000,000 (period values) before 1920.

Reserve resource information: About 5,000 tons of proven ore averaging 17 ounces/ton Ag and 3% Pb; potential ore totals 20,000 tons at a similar grade. (Sunshine files, 1980).

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


17 valid minerals.

Detailed Mineral List:

Aurichalcite
Formula: (Zn,Cu)5(CO3)2(OH)6
Reference: Minerals of Colorado (1997) Eckel, E. B.
Azurite
Formula: Cu3(CO3)2(OH)2
Reference: James A. Bauer; James A. Bauer Collection
Baryte
Formula: BaSO4
Reference: James A. Bauer; James A. Bauer Collection
Cerussite
Formula: PbCO3
Reference: James A. Bauer; James A. Bauer Collection
Dolomite
Formula: CaMg(CO3)2
Reference: Minerals of Colorado (1997) E.B. Eckel
Galena
Formula: PbS
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10009438.
Gold
Formula: Au
Reference: Frank Karasti
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Reference: James A. Bauer; James A. Bauer Collection
Hydrozincite
Formula: Zn5(CO3)2(OH)6
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10009438.
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10009438.
Malachite
Formula: Cu2(CO3)(OH)2
Reference: James A. Bauer; James A. Bauer Collection
Pyrite
Formula: FeS2
Reference: USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10009438.
'Pyrochlore'
Reference: James A. Bauer; James A. Bauer Collection
'Pyrochlore Group'
Formula: A2Nb2(O,OH)6Z
Reference: James A. Bauer; James A. Bauer Collection
Quartz
Formula: SiO2
Reference: Frank Karasti
Rosasite
Formula: (Cu,Zn)2(CO3)(OH)2
Reference: James A. Bauer; James A. Bauer Collection
Sauconite
Formula: Na0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O
Reference: Minerals of Colorado (1997) E.B. Eckel
Silver
Formula: Ag
Reference: James A. Bauer; James A. Bauer Collection
Smithsonite
Formula: ZnCO3
Reference: James A. Bauer; James A. Bauer Collection
Sphalerite
Formula: ZnS
Reference: Minerals of Colorado (1997) E.B. Eckel
'Tetrahedrite'
Formula: Cu6(Cu4X2)Sb4S13
Reference: Minerals of Colorado (1997) E.B. Eckel

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
'Tetrahedrite'2.GB.05Cu6(Cu4X2)Sb4S13
Group 4 - Oxides and Hydroxides
'Pyrochlore Group'4.00.A2Nb2(O,OH)6Z
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Aurichalcite5.BA.15(Zn,Cu)5(CO3)2(OH)6
Azurite5.BA.05Cu3(CO3)2(OH)2
Cerussite5.AB.15PbCO3
Dolomite5.AB.10CaMg(CO3)2
Hydrozincite5.BA.15Zn5(CO3)2(OH)6
Malachite5.BA.10Cu2(CO3)(OH)2
Rosasite5.BA.10(Cu,Zn)2(CO3)(OH)2
Smithsonite5.AB.05ZnCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Group 9 - Silicates
Hemimorphite9.BD.10Zn4Si2O7(OH)2 · H2O
Sauconite9.EC.45Na0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O
Unclassified Minerals, Rocks, etc.
'Limonite'-(Fe,O,OH,H2O)
'Pyrochlore'-

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
Silver1.1.1.2Ag
Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
3 <ø < 4
'Tetrahedrite'3.3.6.1Cu6(Cu4X2)Sb4S13
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
A2B2O6(O,OH,F)
'Pyrochlore Group'8.2.1.1A2Nb2(O,OH)6Z
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Cerussite14.1.3.4PbCO3
Smithsonite14.1.1.6ZnCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Azurite16a.2.1.1Cu3(CO3)2(OH)2
Malachite16a.3.1.1Cu2(CO3)(OH)2
Rosasite16a.3.1.2(Cu,Zn)2(CO3)(OH)2
Aurichalcite16a.4.2.1(Zn,Cu)5(CO3)2(OH)6
Hydrozincite16a.4.1.1Zn5(CO3)2(OH)6
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] coordination
Hemimorphite56.1.2.1Zn4Si2O7(OH)2 · H2O
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 clays
Sauconite71.3.1b.3Na0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Limonite'-(Fe,O,OH,H2O)
'Pyrochlore'-

List of minerals for each chemical element

HHydrogen
H Aurichalcite(Zn,Cu)5(CO3)2(OH)6
H SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O
H AzuriteCu3(CO3)2(OH)2
H MalachiteCu2(CO3)(OH)2
H HemimorphiteZn4Si2O7(OH)2 · H2O
H Rosasite(Cu,Zn)2(CO3)(OH)2
H HydrozinciteZn5(CO3)2(OH)6
H Limonite(Fe,O,OH,H2O)
H Pyrochlore GroupA2Nb2(O,OH)6Z
CCarbon
C Aurichalcite(Zn,Cu)5(CO3)2(OH)6
C DolomiteCaMg(CO3)2
C AzuriteCu3(CO3)2(OH)2
C CerussitePbCO3
C SmithsoniteZnCO3
C MalachiteCu2(CO3)(OH)2
C Rosasite(Cu,Zn)2(CO3)(OH)2
C HydrozinciteZn5(CO3)2(OH)6
OOxygen
O Aurichalcite(Zn,Cu)5(CO3)2(OH)6
O SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O
O DolomiteCaMg(CO3)2
O AzuriteCu3(CO3)2(OH)2
O BaryteBaSO4
O CerussitePbCO3
O SmithsoniteZnCO3
O MalachiteCu2(CO3)(OH)2
O HemimorphiteZn4Si2O7(OH)2 · H2O
O Rosasite(Cu,Zn)2(CO3)(OH)2
O HydrozinciteZn5(CO3)2(OH)6
O Limonite(Fe,O,OH,H2O)
O QuartzSiO2
O Pyrochlore GroupA2Nb2(O,OH)6Z
NaSodium
Na SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O
MgMagnesium
Mg DolomiteCaMg(CO3)2
AlAluminium
Al SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O
SiSilicon
Si SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O
Si HemimorphiteZn4Si2O7(OH)2 · H2O
Si QuartzSiO2
SSulfur
S SphaleriteZnS
S TetrahedriteCu6(Cu4X2)Sb4S13
S BaryteBaSO4
S GalenaPbS
S PyriteFeS2
CaCalcium
Ca DolomiteCaMg(CO3)2
FeIron
Fe Limonite(Fe,O,OH,H2O)
Fe PyriteFeS2
CuCopper
Cu Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Cu TetrahedriteCu6(Cu4X2)Sb4S13
Cu AzuriteCu3(CO3)2(OH)2
Cu MalachiteCu2(CO3)(OH)2
Cu Rosasite(Cu,Zn)2(CO3)(OH)2
ZnZinc
Zn Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Zn SauconiteNa0.3Zn3((Si,Al)4O10)(OH)2 · 4H2O
Zn SphaleriteZnS
Zn SmithsoniteZnCO3
Zn HemimorphiteZn4Si2O7(OH)2 · H2O
Zn Rosasite(Cu,Zn)2(CO3)(OH)2
Zn HydrozinciteZn5(CO3)2(OH)6
NbNiobium
Nb Pyrochlore GroupA2Nb2(O,OH)6Z
AgSilver
Ag SilverAg
SbAntimony
Sb TetrahedriteCu6(Cu4X2)Sb4S13
BaBarium
Ba BaryteBaSO4
AuGold
Au GoldAu
PbLead
Pb CerussitePbCO3
Pb GalenaPbS

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Loughlin, G. F. (1918), The Oxidized Zinc Ores of Leadville Colorado.
Behre, C. H., Jr. (1953), Geology and ore deposits of the west slope of the Mosquito Range (Colorado): USGS Professional Paper 235, 176 p.
Johansing, R. J., and Thompson, T. B. (1990), Geology and origin of Sherman-type deposits, central Colorado: Economic Geology Monograph 7: 367-394.
Eckels, E. B. (1997), Minerals of Colorado.
USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10009438 & 10167089.
U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0080650094.
Colorado Geological Survey, Sunshine Mining Company, Colorado exploration files, unpublished data.
MESA met-nonmet mine file reference owner - Robert R. Benson.

Other Databases

USGS MRDS Record:10009438

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate

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