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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

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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.

The above list contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


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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