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Granite Mountain Mine (Redman mine), Granite Mountain, Banner, Banner District, San Diego Co., California, USA

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A former Au mine located 8.4 miles SE of Julian 2.7 km and about 5 miles SE of Banner on the SSE slopes of Granite Mountain in NW1/4 SEC 21 T13S R5E SBM at elevations from 3’450 feet to 3’900 feet.

Most likely located by Gus Redman in 1905, a sign near the mine, chiselled in a rock, reads “G. Redman 1905”, but the first claims were recorded in 1910 by W.K. Maull, 1925 to 1939 the mine was owned again by Gus Redman, the last known owner was W.A. Spillars in 1955.

Gold occurs in quartz veins trending NW and dipping steeply in mica schist.

The workings consisted of 5 adits (50 to 200 ft long) and 1 inclined shaft plus a small mill with crusher, pulverizer and cyanide tanks. All the entrances could be easily located in 2005. 3 adits were still accessible. Remains of the mill are also visible.

Adits at: N33.02810 W116.47087; N33.02888 W116.46978 and N33.03020 W116.47031

Dumps at: N33.02852 W116.46987; N33.02900 W116.47009; N33.02796 W116.47082 and N33.02827 W116.47100.

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Merrill, F.J.H. (1914): Geology and Mineral Resources of San Diego and Imperial Counties. In: State Mineralogist’s report, Biennial Period 1913 – 1914. p. 30

Tucker, W.B. (1925): San Diego County. In: Report XXI of the State Mineralogist, Mining in California, Vol. 21, p. 339.

Tucker, W.B. and Sampson, R.J. (1939): Mineral Resources of San Diego County. In: California Journal of Mines and Geology, Vol. 35, no. 1, p.20.

Weber, F.H. Jr. (1963): Mines and mineral resources of San Diego County, California. California Division of Mines and Geology County Report No. 3, p. 149.

Murdoch, Joseph & Robert W. Webb (1966): Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: p. 121, 242.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, Deposit ID 10262336

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