The Silver Jack Mine is a silver, lead, and gold mine located in Hinsdale county, Colorado at an elevation of 11,050 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: 11,050 Feet (3,368 Meters)
Commodity: Silver, Lead, Gold
Lat, Long: 38.10167, -107.47083
Map: View on Google Maps
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Silver Jack Mine MRDS details
Site Name
Primary: Silver Jack Mine
Secondary: Patented Claim: Silver Jack, MS 20073
Secondary: Unpatented Claims: Silver Jack Nos. 2-10, 12-14
Secondary: Silver Jack Extension
Commodity
Primary: Silver
Primary: Lead
Primary: Gold
Location
State: Colorado
County: Hinsdale
District: Cimarron District
Land Status
Land ownership: Private
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.
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Jim Ingram
Home Office: Montrose, Co.
Years: 1968 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
Operation Type: Unknown
Year Last Production: 1931
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
Not available
Orebody
Not available
Structure
Type: R
Description: San Juan Volcanic Field, San Juan Depression
Type: L
Description: San Juan-Uncompahgre Calderas, Lake City Caldera, Cimarron Volcano
Alterations
Not available
Rocks
Name: Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Oligocene
Name: Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Oligocene
Analytical Data
Analytical Data: SILVER JACK EXTENSION CLAIM: 0.35 OZ/TON AU, 56 OZ/TON AG, 10 % PB. STEVEN AND OTHERS' (1977) DUMP SAMPLE ASSAYED 0.09 OZ/TON AU AND 0.2 OZ/TON AG.
Analytical Data: SILVER JACK NO. 10 CLAIM: 0.5 OZ/TON AU, 16 OZ/TON AG
Analytical Data: SILVER JACK NO. 2 CLAIM: 0.13 OZ/TON AU, 15 OZ/TON AG
Analytical Data: ORE ASSAYS CITED IN CDM REPTS.: ORE, 0.25 OZ/TON AU, 16 OZ/TON AG
Materials
Ore: Pyrite
Gangue: Limonite
Comments
Comment (Workings): 35-FT SOUTH CROSSCUT TO VEIN, THENCE 410-FT SE DRIFT, THENCE 508-FT EAST DRIFT; AT 215 FT FROM INTERSECTION OF VEIN AND CROSSCUT IS 82-FT RAISE CONNECTING TO 40-FT DRIFT FROM SURFACE. SILVER JACK NO. 2 CLAIM: 522-FT TUNNEL DRIVEN GENERALLY EAST TO CONNECT WITH EAST DRIFT ON SILVER JACK CLAIM. SILVER JACK NO. 13 CLAIM: 22-FT-DEEP VERTICAL SHAFT WITH 15-FT EAST DRIFT AT BOTTOM.
Comment (Location): MINE LIES ON BOTH SIDES OF SILVER CREEK 1000 FT ABOVE CONFLUENCE WITH EAST FORK CIMARRON RIVER AND 2.15 MILES NNW OF UNCOMPAHGRE PEAK. ELEV AND LAT-LONG GIVEN ARE FOR SOUTH ADIT IN SE SE SEC. 36. ; INFO FROM LAND.ST :1975
Comment (Commodity): ORE MINERALS LISTED ABOVE ARE UNVERIFIED BUT ARE PROBABLY SIMILAR TO SULFIDE MINERALIZATION AT OTHER PRECALDERA VOLCANIC CENTER (CARSON) TO SOUTH. CU AND ZN ALSO MAY BE PRESENT, BUT THESE ARE UNVERIFIED.
Comment (Deposit): DEPOSIT IS ASSOCIATED WITH CIMARRON VOLCANO, LYING NORTH OF AND PREDATING FORMATION OF SAN JUAN-UNCOMPAHGRE AND LAKE CITY CALDERAS. WIDESPREAD SEQUENCE OF INTERMEDIATE-COMPOSITION (ANDESITE, RHYODACITE) CONE BRECCIAS INTERBEDDED WITH PORPHYRYTIC ANDESITE, RHYODACITE, AND QUARTZ LATITE FLOWS AND FLOW BRECCIAS IS CUT BY INTRUSIVE ROCKS OF CORE OF CIMARRON VOLCANO. ON SOUTH SIDE OF SILVER CREEK IS SMALL MONZONITE/MONZONITE PORPHYRY PLUG FROM WHICH RADIATE SEVERAL ANDESITE/RHYODACITE PORPHYRY DIKES. WORKINGS ON NORTH SIDE OF CREEK APPARENTLY DEVELOPED IN PROMINENT NORTH-SOUTH-TRENDING DIKE. CDM REPORTS CITE VEIN WIDTHS OF 2 TO 25 FT ON SURFACE AND 2 TO 5 FT UNDERGROUND.
References
Reference (Deposit): STEVEN, T.A., AND OTHERS, 1977, MINERAL RESOURCES OF STUDY AREAS CONTIGUOUS TO THE UNCOMPAHGRE PRIMITIVE AREA, SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS BULL. 1391-E, P. 36-37, 85.
Reference (Deposit): LIPMAN, P.W., 1976, GEOLOGIC MAP OF THE LAKE CITY CALDERA AREA, WESTERN SAN JUAN MOUNTAINS, SOUTHWESTERN COLORADO: USGS MAP I-962.
Reference (Deposit): LIPMAN, P.W., AND OTHERS, 1973, REVISED VOLCANIC HISTORY OF THE SAN JUAN, UNCOMPAHGRE, SILVERTON, AND LAKE CITY CALDERAS IN THE WESTERN SAN JUAN MOUNTAINS, COLORADO: USGS JOUR. RESEARCH, V. 1, NO. 6, P. 627-642.
Reference (Deposit): COLORADO DIV. MINES INF. REPTS.
Reference (Deposit): BLM MINERAL SURVEY MS 20073
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