The Black Giant Mine is a copper, gold, silver, and lead mine located in La Plata county, Colorado at an elevation of 12,402 feet.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Elevation: 12,402 Feet (3,780 Meters)
Commodity: Copper, Gold, Silver, Lead
Lat, Long: 37.60556, -107.59694
Map: View on Google Maps
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Black Giant Mine MRDS details
Site Name
Primary: Black Giant Mine
Secondary: Patented Claims: Black Giant, Jr., MS 1608
Secondary: Black Giant, MS 1609
Secondary: Black Monster, MS 1762
Secondary: Baby Giant, MS 1764
Commodity
Primary: Copper
Primary: Gold
Primary: Silver
Primary: Lead
Secondary: Zinc
Tertiary: Manganese
Location
State: Colorado
County: La Plata
District: Needle Mountain (Tacoma, Florida, Vallecito) District
Land Status
Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Administrative Organization: San Juan N. F.
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Deposit Type: Vein
Operation Type: Unknown
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains
Mineral Deposit Model
Model Name: Polymetallic veins
Orebody
Not available
Structure
Type: R
Description: San Juan Uplift, San Juan Basin, San Juan Volcanic Field
Type: L
Description: Needle Mtns Uplift, Chicago Basin Stock, Eolus Batholith, Trimble Stock
Alterations
Not available
Rocks
Name: Granite
Role: Host
Age Type: Associated Rock Unit
Age in Years: 1460.000000+-70.000000
Dating Method: K-Ar
Age Young: Precambrian
Name: Granite
Role: Host
Age Type: Host Rock Unit
Age in Years: 1466.000000+-27.000000
Dating Method: Rb-Sr
Age Young: Precambrian
Name: Granite
Role: Host
Age Type: Associated Rock Unit
Age in Years: 10.100000+-1.100000
Material Analyzed: Zircon
Age Young: Miocene
Name: Granite
Role: Host
Age Type: Associated Rock Unit
Age in Years: 1466.000000+-20.000000
Dating Method: U-Pb (zircon)
Material Analyzed: Zircon
Age Young: Precambrian
Name: Granite
Role: Host
Age Type: Associated Rock Unit
Age in Years: 9.000000+-0.900000
Material Analyzed: Zircon
Age Young: Miocene
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 10.100000+-1.100000
Material Analyzed: Zircon
Age Young: Miocene
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock Unit
Age in Years: 1460.000000+-70.000000
Dating Method: K-Ar
Age Young: Precambrian
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock Unit
Age in Years: 1466.000000+-20.000000
Dating Method: U-Pb (zircon)
Material Analyzed: Zircon
Age Young: Precambrian
Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 9.000000+-0.900000
Material Analyzed: Zircon
Age Young: Miocene
Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock Unit
Age in Years: 1466.000000+-27.000000
Dating Method: Rb-Sr
Age Young: Precambrian
Name: Quartz Monzonite
Role: Host
Age Type: Host Rock Unit
Age in Years: 1466.000000+-20.000000
Dating Method: U-Pb (zircon)
Material Analyzed: Zircon
Age Young: Precambrian
Name: Quartz Monzonite
Role: Host
Age Type: Associated Rock Unit
Age in Years: 10.100000+-1.100000
Material Analyzed: Zircon
Age Young: Miocene
Name: Quartz Monzonite
Role: Host
Age Type: Host Rock Unit
Age in Years: 1460.000000+-70.000000
Dating Method: K-Ar
Age Young: Precambrian
Name: Quartz Monzonite
Role: Host
Age Type: Associated Rock Unit
Age in Years: 9.000000+-0.900000
Material Analyzed: Zircon
Age Young: Miocene
Name: Quartz Monzonite
Role: Host
Age Type: Host Rock Unit
Age in Years: 1466.000000+-27.000000
Dating Method: Rb-Sr
Age Young: Precambrian
Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 10.100000+-1.100000
Material Analyzed: Zircon
Age Young: Miocene
Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 1466.000000+-20.000000
Dating Method: U-Pb (zircon)
Material Analyzed: Zircon
Age Young: Precambrian
Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 9.000000+-0.900000
Material Analyzed: Zircon
Age Young: Miocene
Name: Granite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 1460.000000+-70.000000
Dating Method: K-Ar
Age Young: Precambrian
Name: Granite
Role: Associated
Age Type: Host Rock Unit
Age in Years: 1466.000000+-27.000000
Dating Method: Rb-Sr
Age Young: Precambrian
Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 10.100000+-1.100000
Material Analyzed: Zircon
Age Young: Miocene
Name: Rhyolite
Role: Associated
Age Type: Associated Rock Unit
Age in Years: 9.000000+-0.900000
Material Analyzed: Zircon
Age Young: Miocene
Analytical Data
Analytical Data: STEVEN AND OTHERS' (1969) ASSAY OF SELECTED DUMP SAMPLE CONTAINED 1.40 OZ/TON AG, 0.08% CU, 0.56% PB, 0.90% ZN. SEMIQUANTITATIVE SPECTROGRAPHIC ANALYSES OF TWO SULFIDE-BEARING QUARTZ VEIN SAMPLES CONTAINED 150 TO 500 PPM TI, 2000 TO GT 5000 PPM MN, 70 TO 100 PPM AG, LT 200 TO 300 PPM AS, 100 PPM BA, LT 10 TO 10 PPM BI, GT 500 PPM CD, LT 5 PPM CR, 500 TO 700 PPM CU, 30 TO 100 PPM MO, GT 20000 PPM PB, 100 TO 300 PPM SB, LT 10 PPM SN, LT 100 PPM SR. 10 TO 15 PPM V, LT 50 PPM W, GT 10000 PPM ZN: CHEMICAL ANALYSES SHOWED 0.04 TO 0.06 PPM AU, 700 PPM CU, 190 TO 310 PPM PB, GT 10000 PPM ZN.
Materials
Ore: Chalcopyrite
Ore: Sphalerite
Gangue: Rhodochrosite
Gangue: Quartz
Comments
Comment (Location): (LAND STATUS AND ADMINISTRATIVE AREA LOCATIONS CALCULATED USING GIS OVERLAY ANALYSIS FOR SAN JUAN N. F.). MINE LIES ABOVE CHICAGO BASIN ON SE SIDE OF JUPITER MTN, 0.55 MILE NE OF COLUMBINE PASS. ; INFO FROM LAND.ST :1974
Comment (Deposit): QUARTZ VEIN TRENDS N 77 W, 48 TO 58 NE, AND LIES IN GENERALLY EAST-WEST-TRENDING REGIONAL RECTANGULAR FRACTURE SYSTEM. APPROX ON TREND AND FARTHER TO SE OF MINE IS PRECAMBRIAN (?) MAFIC DIKE.
Comment (Workings): ONE TUNNEL OF UNKNOWN EXTENT DRIVEN INTO VEIN AT S 77 E
References
Reference (Deposit): SCHMITT, L.J., AND RAYMOND, W.H., 1977, GEOLOGY AND MINERAL DEPOSITS OF THE NEEDLE MOUNTAINS DISTRICT, SOUTHWESTERN COLORADO: USGS BULL. 1434, 40 P.
Reference (Deposit): STEVEN, T.A., AND OTHERS, 1969, MINERAL RESOURCES OF THE SAN JUAN PRIMITIVE AREA, COLORADO: USGS BULL. 1261-F, P. 30-32, 55-67, 98-99, 162-163.
Reference (Deposit): CROSS, WHITMAN, AND OTHERS, 1905, DESCRIPTION OF THE NEEDLE MOUNTAINS QUADRANGLE, COLORADO: USGS FOLIO 131.
Reference (Deposit): BLM MINERAL SURVEY MS 1608, 1609, 1762, 1764
Colorado Mining Photos
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