Boardway Mine (Boardway property; Boardway prospect), Trigo Mountains District (Cibola District), Trigo Mts, La Paz Co., Arizona, USA

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‡Ref.: Wilson, E.D. (1933) Geology and Mineral Deposits of Southern Yuma County, Arizona. Arizona Bureau of Mines Bulletin 134: 73.

Wilson, E.D., Cunningham, J.B., and Butler, G.M. (1934), Arizona Lode Gold Mines and Gold Mining (revised 1967), Arizona Bureau of Mines Bull. 137: 148.

Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geological Survey Branch Bull. 192, Index of Mining Properties in Yuma County, Arizona: 181 (Table 4).

Arizona Bureau of Mines file data.

U.S. Bureau of Mines file data.

MRDS database Dep. ID file #10027232, MRDS ID #M002563; and, Dep. ID #10234403, MAS ID #0040120105.

A former underground Au-Ag mine on 2 claims, located in sec. 12, T2S, R23W, about 2 miles South of the Hardt Mine and about 6 miles ESE of Cibola on the NW slope of the Trigo Mountains, on BLM-administered land. Started in the 1890's and initially owned by the Sparks Brothers, then Mr. C.E. Boardway.

Mineralogy & geology similar to those of the Grand Central Mine. Narrow, branching quartz veins which occupy fault zones within the schists. The ore zone strikes E-W and dips 15S. Lenticular schist inclusions in larger masses of granite are cut by narrow quartz veins which contain small limonitic pockets locally rich in gold. Principal vein strikes Eastward and dips 15ºS.; less than 1 foot to 2½ feet wide. 3 oreshoots each from 16 to 20 feet long that contain small, scattered pockets of limonite.

Workings include a tunnel 42.67 meters long.

Mineral List

Gold

Limonite

2 entries listed. 1 valid mineral.