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Nogales Wash-Santa Cruz River divide, Calabasas area, Nogales District (Gold Hill District), Santa Cruz Co., Arizona, USA

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‡Ref.: Hill, J.M. (1910b), Note on the occurrence of tungsten minerals near Calabasas, Arizona, USGS Bull. 430: 164-166.

Pellegrin, A.L. (1911), Rare minerals in southern Arizona, Mining World: 34: 430.

Wilson, E.D. (1941), Arizona Bureau of Mines Bull. 148: 50.

Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 81.

Dale, V.B., et al (1960), Tungsten deposits of Cochise, Pima, and Santa Cruz Counties, Arizona, U.S. Bureau of Mines Report of Investigation 5650.

Lemmon, D.M., and Tweto, O.L. (1962) Tungsten in the U.S., USGS map, MR-25.

Lemmon, D.M., unpublished data.

MRDS database Dep. ID file #10107635, MRDS ID #D000831.

A W occurrence located in secs. 7 & 18, T23S, R14E, on the divide between the Nogales Wash and the Santa Cruz River, about 2½ miles SSE of Calabasas and 10 miles North of Nogales, on private land. Discovered 1906, closed and restarted in 1913. Owned by H.B. Imus (1940).

Mineralization is coarse-grained, light gray granodiorite intruded by dikes of aplite and lamprophyre. Cutting these rocks are veins of banded, comb-textured quartz with minerals. There are many veins, all striking N.25ºW. and essentially vertical. Most are barren or low grade and most are less than 10 inches wide with a few to 2 feet wide.

Workings include several shafts 10 to 30 feet deep (prior to 1909). Produced 1,400 pounds of ore at more than 50% WO3.

Mineral List



3 entries listed. 2 valid minerals.

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