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The Glidden Company deposit (Glidden Barytes Mine; Glidden deposit; Loftus deposit; Loftus Mine; Marion; Barite No. 1 Mine; Barite No. 2 Mine), Castle Crag, Klamath Mts, Shasta Co., California, USA

The Glidden Company deposit, Castle Crag, Klamath Mts, Shasta Co., California, USA

Photo: Weinrich Minerals, Inc.
Latitude: 41°8'9"N
Longitude: 122°14'55"W
A former baryte mine located in secs. 18 & 19, T38N, R3W, MDM, 4.7 km (2.9 miles) SE of Castle Crag, on Girard Ridge near Tom Neal Creek and in the headwaters area of Fall Creek. MRDS database stated accuracy for this location is 500 meters.

Mineralization is a bedded baryte deposit (Deposit model Model code 212; USGS model code 31b; deposit model name: Bedded barite), hosted in slate and limestone of Devonian or Carboniferous age. The ore body is a bed. Local rocks include Devonian marine rocks, unit 2 (Eastern Klamath Mountains).

Workings include surface and underground openings.

Analytical data results: 88-96% BaSO4.

Mineral List


1 entry listed. 1 valid mineral.

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Laizure, Clyde McK (1921), Redding field division: California Mining Bureau. Report 17: 515.

Logan, Clarence August (1926), El Dorado, Shasta and Trinity Counties: California Journal of Mines and Geology, California Mining Bureau. (Report 22): 22: 130.

Averill, C.V. (1939), Mineral resources of Shasta County: California Journal of Mines & Geology (Report 35): 35(2): 114-115.

Brobst, D.A. (1958), Barite Resources of the United States, USGS Bull. 1072-B: 108 (Table 10).

Davis, Fenelon Francis (1963), Highlights in California Mining, 1962. California Division Mines & Geology, Mineral Information Service: 16: 5.

Weber, F.H., Jr. (1963b), Barite in California: California Division Mines & Geology, Mineral Information Service: 16: 4.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 99.

Weber, F.H., Jr. (1966b), Mineral resources of California: Barite. California Division of Mines and Geology Bulletin: 191: 96-97.

Weber, F.H., Jr., and Matthews, R.A. (1967) Prospecting for barite in Shasta County. California Division of Mines and Geology Mineral Information Service: 20: 107-114.

Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 294.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10077526, 10140865, & 10262709.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060890080 & 0060890081.

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