The Knob Group is a gold and silver mine located in Inyo county, California at an elevation of 4,551 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: 4,551 Feet (1,387 Meters)
Commodity: Gold, Silver
Lat, Long: 36.02222, -117.15917
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.
Knob Group MRDS details
Site Name
Primary: Knob Group
Secondary: Anthony and Gold Bug
Secondary: Post Office Springs Mine
Commodity
Primary: Gold
Primary: Silver
Secondary: Copper
Secondary: Lead
Tertiary: Iron
Location
State: California
County: Inyo
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1893
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Form: HONEYCOMBED
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Analytical Data: 18-IN OF ORE FROM STOPE ASSAYED $60/TON
Materials
Ore: Hematite
Ore: Pyrite
Ore: Gold
Gangue: Quartz
Comments
Comment (Workings): ON NORTH END: NUMBER OF SHORT TUNNELS AND 2 SMALL STOPES. ON SOUTH END: 50-FT. STOPE THAT WAS 20-FT. DEEP. 100 FT. BELOW STOPE, ADIT DRIVEN FOR 100 FT. ON VEIN STOPE 40 FT. LONG, 30 FT. HIGH AND 2.5 FT. WIDE WAS WORKED FORM THIS TUNNEL. SOUTH END OF OLD GOLD BUG NO.1 CLAIM, 2500 FT. S OF DESCRIBED WORKINGS, CONSISTED OF SHORT TUNNELS AND 40-FT. INCLINE. ON 20-FT. LEVEL, 30 FT. DRIFT TO NORTH, AND 30 FT. TO SOUTH. BELOW SOUTH DRIFT, STOPE 20-FT. LONG BY 2.5 FT. WIDE. BOTTOM OF STOPE TAPPED BY RAISE FROM BOTTOM OF INCLINE, MILLSITE.
Comment (Deposit): 2 UNPATENTED CLAIMS, KNOB NO. 1 AND NO. 2. INCORPORATED EARLIER CLAIMS UNDER DIFFERENT NAMES ; INFO.SRC : 1 PUB LIT
Comment (Location): UTM ACC LAND UNSURVEYED
Comment (Production): NO OTHER PRODUCTION RECORD FOUND 16-18 IN OF ORE CARRIED $40/TON
Comment (Deposit): INTERLACING VEIN SYSTEM, ONE SERIES WITH SOUTHWEST DIP, OTHER WITH EASTERLY DIP THAT INTERSECTS MAIN VEIN AS EXPOSED IN FACE OF CLIFF. THIRD SERIES OF SUBORDINATE FRACTURES STRIKE NW DIP STEEPLY SE AND FORM JUNCTIONS WITH MAIN VEIN FROM FOOTWALL SIDE, BUT DO NOT CROSS VEIN INTO HANGING WALL. MAIN VEIN TRACED FOR 0.5 MI. TO SOUTH FROM FACE OF CLIFF, VARIES FROM FEW IN.-3.5 FT. IN THICKNESS. FAINT TRACE OF COPPER SULFATE STAINING SEEN ON MOST OF ORE. HIGHEST GRADE ORE IN BANDS OF HEMATITE AND WHITE TO IRON-STAINED POROUS QUARTZ IN HEMATITE. ORE WAS GENERALLY HIGH-GRADE.
Comment (Geology): ROCK EXPOSED 600-700 FT. ABOVE BED OF CANYON IS SCHIST THAT HAS BEEN INTENSIVELY FOLDED. 400-500 FT OF BROWN, CRYSTALLINE LIMESTONE RESTS ON TOP OF SCHIST.
References
Reference (Deposit): NORMAN, L.A. JR. AND STEWART, RICHARD M., 1951, MINES AND MINERAL RESOURCES OF INYO COUNTY: CALIF. JOURNAL OF MINES AND GEOLOGY V.47, NO. 1 P. 45
Reference (Deposit): SAMPSON, R.I., 1932, MINERAL RESOURCES OF A PART OF THE PANAMINT RANGE: CALIF. JOUR. MINES AND GEOLOGY, V.28, P. 368-369
Reference (Deposit): GOODWIN, J.G., 1957, LEAD AND ZINC IN CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 53, NOS. 3 & 4, P. 482
Reference (Deposit): CRAWFORD, J.J., 1894, REPORT OF THE STATE MINERALOGIST: CALIF. JOUR. MINES AND GEOLOGY, V. 12, P. 139-140
Reference (Production): NORMAN AND STEWART (1951), GOODWIN (1957)
California Gold
"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.
