The Blue Bell Group is a gold mine located in Modoc county, California at an elevation of 7,201 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.
Elevation: 7,201 Feet (2,195 Meters)
Primary Mineral: Gold
Lat, Long: 41.97639, -120.19806
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Blue Bell Group is in Sec. 1, T. 47 N., R. 15 E., and is owned by William R. Larkin, of Alturas. The property consists of three claims lying in a steep, mountainous country at an elevation of 7500 ft.
The deposit consists of quartz veins in rhyolitic breccia. An upper tunnel runs due south for a distance of 100 ft., then turns to run a little south of east for a distance of 87 ft. This latter part is a drift on 2-ft. width of silicified breccia, which assays from $3 to $5 per ton in gold, according to Larkin. (Gold at $20.) The dip is 70° to the south. Another tunnel is 40 ft. lower and 100 ft. to the northwest. It runs south for 90 ft., then turns and runs southeast for 20 ft., following a stringer zone in a fine-grained cream-colored rock, probably rhyolitic. The rock contains a few dark-colored, rounded inclusions that give it the appearance of a breccia. The stringer-zone is 2.5 ft. in width, but the best ore is in a quartz stringer from 6 inches to 8 inches in width. The dip of this zone is also 70° south. The vein and the country rock near it contain numerous open cracks, as much as a foot in width. The quartz stringers also contain open seams and cavities into which pointed quartz crystals have grown in comb-structure.
Larkin works alone with hand-tools, sorting this ore and hauling a ton at a time of the sorted ore to the Selby smelter. He states that his shipments of this hand-picked ore have averaged $300 per ton in gold. On the dump are 20 to 30 tons of rejects from the sorting, which he estimates contains roughly $20 per ton in gold.
Source: Quarterly Chapter of State Mineralogist's Report XXXII, Volume 32, 1936. California Journal of Mines and Geology.
Blue Bell Group MRDS details
Site NamePrimary: Blue Bell Group
District: High Grade
Land StatusLand ownership: National Forest
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Deposit Size: S
Mineral Deposit Model
Description: Warner Mountains
Alteration Text: Rhyolite Is Silicified And Brecciated
Age Type: Host Rock
Age Young: Pliocene
|Comment: STRINGER ZONE IN RHYOLITIC BRECCIA VEIN AND ADJACENT COUNTY ROCK CONTAIN NUMEROUS OPEN CRACKS UP TO 1 FT WIDE. BEST ORE FROM QUARTZ STRINERS 6-8 IN. THICK, VEIN AVERAGES 2-2.5 FT THICK.; USGS MODEL MAY ALSO BE 25A: HOT-SPRING AU-AG.|
|Comment: NO OTHER INFORMATION AVAILABLE. SHIPMENTS OF HAND-PICKED ORE AVG. $300/TON IN GOLD. SHIPMENTS OF HAND-PICKED ORE AVG. $300/TON IN GOLD.|
|Comment: DEVELOPED BY TWO ADITS, UPPER ADIT RUNS SOUTH FOR 100 FT THEN SOUTHEAST FOR 87 FT. OTHER ADIT RUNS 90 FT IN AND DRIFTS FOR 20 FT|
|Comment: GEOL.DESC: CAVITIES WITH COMB-STRUCTURE QTZ|
|Comment: THREE CLAIMS ; INFO.SRC : 1 PUB LIT|
Reference Category: Deposit
Reference: AVERILL, C.V., 1936, MINERAL RESOURCES OF MODOC COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 32, NO. 4, P. 451.
Reference Category: Deposit
Reference: O'BRIEN, J.C., 1948, MODOC COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 44, NO. 4, P. 349.
Reference Category: Production
Reference: OBRIEN ( 1948 )