The South Fork Group is a gold mine located in Sierra 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.
Name: South Fork Group
Lat, Long: 39.48944, -120.84306
Map: View on Google Maps
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.
South Fork Group MRDS details
Primary: South Fork Group
Secondary: Amethyst Ext Phoebe
Secondary: Lady Bug
Secondary: Honey Bee
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Deposit Size: S
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Comment (Location): UTM EST. N 1/2
Comment (Workings): ADIT 5500 FT. WINZES, LEVELS AMETHYST MINE SHAFT.
Comment (Deposit): VEINS
Comment (Geology): SEVERAL VEINS. 1ST BETWEEN SERP BELTS, W N STRIKE, EX DIP MAYBE SAME AS IN AMETHYST WORKINGS, & ALSO IN LINE W KANAKA CREEK SYSTEM; CONSISTS OF QTZ LENSES, MAX THICKNESS 8 FT WHICH PINCH TO A SHEAR ZONE 300 FT S OF ADIT. HANGING WALL W WELL DEFINED SLIP, INDEFINITE FOOT WALL WZONE OF QTZ STRINGERS. GOLD W COARSE ARSENOPYRITE IN HANGING WALL NR SLIP. 400 FT E 2ND VEIN W N STRIKE & E DIP. 3RD VEIN SCARCELY MORE THAN SHEAR ZONE WHICH DIPS STEEPLY W, WAS CROSSED 5000 FT IN FROM ADIT PORTAL.ANOTHER W DIPPING VEIN SHOWN IN OLD MINE MAPS, NO LONGER ACCESSIBLE. OTHER SMALLER VEINS. FOR AMETHYST WORKINGS. THERE WERE SEVERAL SML HIGH-GRADE ORE SHOOTS. VEIN HERE STRIKES A FEW DEGREES E OF N, W STEEP E DIP. ORE SHOOTS AT JUNCTION OF MAIN VEIN W MINOR BRANCHES. 300 FT W OF AMETHYST SHAFT A SML VEIN, ESSENTIALLY A SHEAR ZONE W A LITTLE QTZ, HAS NORTHERLY STRIKE, DIPS 60 W
Comment (Production): NO OTHER PRODUCTION RECORD FOUND
Reference (Deposit): AVERILL, C. V., 1942 , MINES AND MINERAL RESOURCES OF SIERRA CO: CDM CALIF. JOUR. MINES AND GEOL, VOL 38, NO 1, P 65
Reference (Deposit): FERGUSON, H. G., & GANNETT, R. W., 1932 , GOLD QTZ VEINS OF THE ALLEGHANY DISTRICT, CALIF.;: USGS PROF PAPER 172, P 94
Reference (Production): FERGUSON & GANNET, 1932
"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 at Where to Find Gold in California.