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Slab Ranch property (Calmo shaft; Calmo Mining and Milling Company), Angels Camp area, Calaveras County, California, USAi
Regional Level Types
Slab Ranch property (Calmo shaft; Calmo Mining and Milling Company)Property
Angels Camp areaArea
Calaveras CountyCounty
CaliforniaState
USACountry

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Latitude & Longitude (WGS84):
38° 5' 23'' North , 120° 32' 16'' West
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
Angels Camp2,677 (2012)2.4km
Vallecito442 (2011)5.6km
Murphys2,213 (2015)8.6km
Tuttletown668 (2011)12.9km
Columbia2,297 (2017)13.3km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Calaveras Gem & Mineral SocietyAngels Camp, California2km
Amador County Gem & Mineral SocietySutter Creek, California41km
Mindat Locality ID:
75908
Long-form identifier:
mindat:1:2:75908:4
GUID (UUID V4):
02b814de-0590-4d82-8971-f761c7a1639a


A former placer Au occurrence/mine located in the SW¼NW¼ and NW¼SE¼ sec. 27, T3N, R13E, MDM, about 2 km N of Angels Camp, NE of Bald Hill. Operated intermittently during the period 1924 to 1933. MRDS database stated accuracy for this location is 100 meters. Map GP-561 shows several mines in this section. The Calaveras Central Gold Mining Co. has obtained control of the property.

Mineralization is a placer Au deposit located on the Central Hill paleochannel. Local rocks include undivided pre-Cenozoic metavolcanic rocks, unit 2 (undivided).

Workings include underground openings comprised of 2 vertical shafts at 167 feet and 115 feet deep. There are several thousand feet (more than 8,000 feet) of drifts and crosscuts, both up and down stream and in the country rock. Some of the workings were said to have been in gravel, but above bedrock and the trough of the channel were not explored. The operation was a failure due to the impractical mining methods employed.

Production information: Au valued at $25,000 (period values) was produced from the Calmo shaft.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


1 valid mineral.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au

List of minerals for each chemical element

AuGold
Au GoldAu

Other Databases

Link to USGS MRDS:10109173

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