Curtis Diatomite deposit (Curtiss Diatomite deposit), Curtis, Cochise Co., Arizona, USA
‡Ref.: Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 87.
Peirce, H. Wesley (1969), Diatomite, in USGS & Arizona Bureau of Mines & U.S. Bureau of Reclamation, Mineral and Water Resources of Arizona, Arizona Bureau of Mines Bull. 180 (USGS Bull.871): 337-342.
Phillips, K.A. (1987), Arizona Industrial Minerals, 2nd. Edition, Arizona Department of Mines & Minerals Mineral Report 4, 185 pp.
Peirce, H. Wesley (1989) Arizona Geological Survey Industrial Mineral card files.
MRDS database Dep. ID file #10160958, MRDS ID #TC10206, MAS ID #0040030263; and, Dep. ID #10060237, MRDS ID #TC10206.
U.S. Bureau of Mines file data.
Arizona Bureau of Mines Circular 1.
A Diatomite occurrence/prospect located in sec. 17, T18S, R21E, outside a recognized district, near Curtis and 3 or 4 miles west of the San Pedro River, on land of unknown status.
Mineralization is a lacustrine diatomite deposit with clay. The deposit consists of a 4 to 8 foot (2.4 meters) thick diatomite bed of "excellent quality" overlain by one foot of volcanic ash and underlain by clay. The diatomite forms a horizontal bed.
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Map Reference: 31°51'51"N , 110°13'4"W
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