This district is in northwestern Mariposa County at the site of the old mining camp of Cat Town. Although the Kinsley-Greeley Hill district adjoins it on the north and the Coulterville portion of the Mother Lode is on the west, this district is on a separate northwest-trending vein system. It may be on the same belt of mineralization as the Whitlock district to the southeast (see fig. 4). The height of mining activity here was in the 1880s and 1890s. The Gold Bug mine and several others were active in the 1930s, and there has been some prospecting since. Also the atea was recently prospected for molybdenum.
The deposits consist of gold-bearing quartz stringers in schist, slate, metachert, and greenstone. The values usually occur in small but rich pockets and ate closely associated with albitite and diorite dikes. The deposits have not been mined to depths of greater than 10.0 feet. The principal gold sources have been the Black Bart, Gold Bug, and White Porphyry mines.
Bowen, O. E., Jr., 1957, Mariposa County, Gold Bug and White Porphyry mines: California Jour. Mines and Geology, vol. 53, no. 102 and 181-183.
Turner, H. W., and Ransome, F.L. 1897, Sonora folio: U.S. Geol. Survey Geol. Atlas of the U.S., folio 41, 7 pp.
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