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Big Juanita Mine group (Brown prospect), Baboquivari District, Baboquivari Mts, Pima Co., Arizona, USA

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Ref.: Dale, V.B., Stewart, L.A., and McKinney, W.A. (1960), Tungsten deposits of Cochise, Pima, and Santa Cruz Counties., Arizona, U.S. Bureau of Mines Report of Investigation 5650: 70.

Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 108 (Table 4).

Stewart, U.S. Bureau of Mines Summary Report 112.

U.S. Bureau of Mines Report File No. 467, Tungsten, Summary Reports, Arizona.

MRDS database Dep. ID file #10008535, MRDS ID #D000786; and, Dep. ID #10039474, MRDS ID #M050136; and, Dep. ID #10162327, MAS ID #0040190601; and, Dep. ID #10210741, MAS ID #0040190122.

A former small surface W mine located in central border area of secs. 29 & 30, T.17S., R.7E. (protracted), about ¾ miles SE of San Juan Spring. Discovered in 1954 and owned by Vance J. Brown.

Mineralization is spotty scheelite with skarn minerals and stringers of secondary calcite along NW-trending fracture zones in Laramide quartzite cut by numerous narrow aplite dikes.

Workings are open cuts and pits with one bulldozer cut and 4 pits over a distance of 150 feet. Reportedly produced about 50 pounds of 62% tungsten concentrates.

Mineral List

5 entries listed. 4 valid minerals.

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