The Quail Hill is a copper and zinc mine located in Calaveras county, California.
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
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.
Quail Hill MRDS details
Site Name
Primary: Quail Hill
Secondary: Eagle
Commodity
Primary: Copper
Primary: Zinc
Secondary: Silver
Secondary: Lead
Secondary: Gold
Location
State: California
County: Calaveras
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: L
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Not available
Orebody
Form: POD/LENS
Structure
Type: L
Description: Folds, Faults
Alterations
Alteration Type: L
Alteration Text: Sericitization, Kaolinization, Silicification, And Pyritization.
Rocks
Not available
Analytical Data
Analytical Data: 5.58 % CU, 15.6 % ZN, .40 OZ/TON AU, 6.51 OZ/TON AG, AND 0.5 - 1.8 % PB.
Analytical Data: LARGEST ORE SHOOT
Materials
Ore: Chalcopyrite
Ore: Pyrite
Ore: Sphalerite
Gangue: Quartz
Gangue: Calcite
Gangue: Barite
Gangue: Chlorite
Comments
Comment (Production): 1888 - 1916 , 1921 - 1937 AND 1939 - 1942 ; NO PRODUCTION REPORTED
Comment (Deposit): LARGEST ORE SHOOT; BEST EXPOSED ON 205 FT. LEVEL, IT WIDENS DOWNWARD BELOW 170 FT. LEVEL, PINCHING OUT AT 240 FT., THIS ORE SHOOT PARALLELS ADJACENT HANGING WALL OF FELSITE INTRUSIVE, IT DIPS TOWARD EAST, PLUNGE 68 SE, PITCH LENGTH 177 FT. SMALLER ORE SHOOTS; SIMILAR IN MODE OF OCCURANCE, SPATIALLY RELATED TO SALIENTS IN HANGING WALL OF FELSITE INTRUSIVE, OR TO FAULTS OR BOTH. THESE SHOOTS REPLACED INTRUSIVE FELSITE IN SHEAR ZONES.
Comment (Workings): A TWO - COMPARTMENT VERTICAL SHAFT 280 FT. DEEP, LEVELS AT 70 , 170 , 205 AND 270 FT. SUBLEVELS AT 190 AND 296 FT. ONE ADIT, MINING CARRIED ON IN OPEN STOPES. MANY PORTIONS OF MINE INACCESSIBLE DUE TO CAVING.
Comment (Reserve-Resource): MOST FAVORABLE GROUND IS THAT LYING ALONG TREND OF DOWNWARD EXTENSION OF STRONGLY MINERALIZED ZONE.
Comment (Geology): GEOL.DESC: LOWER FOOTHILLS SIERRA NEVADA; THICK SEQUENCE OF LAVAS AND PYROCLASTICS AND VARIETY OF INTRUSIVE ROCKS. BOTH TYPES OF IGNEOUS ROCKS ARE IN PART METAMORPHOSED TO LOW GRADE SCHISTS AND GREENSTONES. VOLCANICS USUALLY DIP STEEPLY NE AND A FAIRLY CONSTANT NW STRIKE. SCHISTOSITY WHERE DEVELOPED IS GENERALLY PARALLEL TO NW STRIKE AND NE DIP. LARGEST INTRUSIVE IS AN IRREGULAR SHAPED FELSITE BODY, 1,900 FT. LONG AND 1,500 FT. WIDE. DIKES OF GREENISH - GRAY DIABASE AND DIABASE PORPHYRY CUT THE FELSITE INTRUSIVE AND VOLCANIC ROCKS.
References
Reference (Deposit): HEYL, G. R., 1948 , ZINC - COPPER MINES OF THE QUAIL HILL AREA, CALAVERAS COUNTY, CALIFORNIA; COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 112 - 122 .
Reference (Production): HEYL, G. R., 1948 , P. 114 (SEE REF.)
Reference (Deposit): CLARK, W. B. AND LYDON, P. A., 1962 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIFORNIA; COUNTY REPORT 2 ; CALIF. DIV. MINES AND GEOLOGY, P. 31 - 32 .
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.
