The Klondike Group is a gold mine located in Modoc county, California at an elevation of 7,598 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: 7,598 Feet (2,316 Meters)
Commodity: Gold
Lat, Long: 41.96583, -120.19139
Map: View on Google Maps
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Mine Description
Webmaster's note: the USGS spelling for this mine was "Klondyke". I have changed the spelling to conform with documents from the California Journal of Mines and Geology
Klondike Group in Sec. 1, 12, T. 47 N., R. 15 E., and Sec. 6, 7, T. 47 N., R. 16 E. It comprises 15 claims at an elevation of 7000 ft., held by W. B. Broaddus, of Fort Bidwell. The claims on the accompanying map (fig. 1) numbered 2, 3, 4, 5, 19, 30, 43, and 66 give an idea of the location in this group (webmaster’s note: map is missing). The 90-ft. vertical shaft on Klondike claim mentioned in State Mineralogist's Report XXV, has not been used recently. Broaddus is driving an adit level at a point some 600 ft. east of the shaft. This is a cross-cut designed to cut the original discovery vein, on which a 50-ft. shaft and some open cuts had been driven years ago. It is roughly 150 ft. lower in elevation than the collar of the shaft, and has been driven for a distance of 160 ft. Broaddus figures that he has 35 ft. yet to go. He states that the dumps from the shaft and the open cuts contain 1000 tons of $20 ore.
The vein material in the open cuts is largely breccia (probably rhyolitic) partly silicified, and containing seams of vein-quartz from a fraction of an inch to an inch wide, also much iron-oxide. The adit below is in a similar breccia, probably rhyolitic. In the face, the breccia is much silicified and is plentifully sprinkled with minute crystals of pyrite and chalcopyrite.
Machinery has been moved from the 90-ft. shaft to the portal of the new adit-level. A small mill has been built, to which both the compressor engine and the hoist-engine have been belted. Machinery includes the following: 36-hp. steam boiler (fired with wood); 12-hp. Byron Jackson vertical engine; 16-hp. steam hoist; 8-inch by 12-inch Blake crusher; 2 sets rolls, 9-inch diameter by 18 inches long; ball mill, 24 inches by 36 inches; 4 small flotation cells; 6-inch by 6-inch by 6-inch Rex compressor. The mill is said to have a 5-ton daily capacity when grinding to 40-mesh.
Source: Quarterly Chapter of State Mineralogist's Report XXXII, Volume 32, 1936. California Journal of Mines and Geology.
Klondike Group MRDS details
Site Name
Primary: Klondike Group
Secondary: Claims: Alturus
Secondary: Alturus No. 1
Secondary: No. 2
Secondary: Alturus Fraction
Secondary: Evening Star
Secondary: Klondike
Secondary: Mountain Sheep
Secondary: White Quartz
Commodity
Primary: Gold
Location
State: California
County: Modoc
District: High Grade
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.
Holdings
Not available
Workings
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
Not available
Mineral Deposit Model
Model Name: Epithermal vein, Sado
Orebody
Form: VEINS
Structure
Type: R
Description: Warner Mountains
Type: L
Description: Rhyolite Is Brecciated
Alterations
Alteration Type: L
Alteration Text: Rhyolite Is Partially Silicified
Rocks
Name: Rhyolite
Role: Host
Age Type: Host Rock
Age Young: Pliocene
Analytical Data
Analytical Data: ASSAYS YIELDED $7.20/TON AU. LOCALLY ASSAYS ARE AS HIGH AS $250/TON
Materials
Ore: Chalcopyrite
Ore: Pyrite
Ore: Gold
Gangue: Quartz
Gangue: Amethyst
Comments
Comment (Deposit): THERE ARE SEVERAL VEINS ON THESE CLAIMS; USGS MODEL MAY ALSO BE 25A: HOT-SPRING AU-AG.
Comment (Workings): SHAFTS AND OPEN CUTS
References
Reference (Deposit): AVERILL, C.V., 1936, MINERAL RESOURCES OF MODOC COUNTY: CALIFORNIA JOURNAL OF MINES AND GOELOGY, V. 32, NO. 4, P. 452-453.
Reference (Deposit): HILL, J.M., 1915, SOME MINING DISTRICTS IN NORTHEASTERN CALIFORNIA AND NORTHWESTERN NEVADA: U.S. GEOLOGICAL SURVEY BULLETIN 594, PL. 5.
Reference (Deposit): AVERILL, C.V., 1929, MODOC COUNTY, IN 25TH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU, P. 14.
Reference (Deposit): O'BRIEN, J.C., 1948, MODOC COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 44, NO. 4, P. 349.
Reference (Deposit): TUCKER, W.B., 1919, MODOC COUNTY, IN 15TH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU, P. 245.
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.
