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Northern prospect, La Posa District (Wellton District; Wellton Hills District), Wellton Hills-Copper Mts, Yuma Co., Arizona, USA

‡Ref.: Wilson, E.D. (1933) Geology and Mineral Deposits of Southern Yuma County, Arizona. Arizona Bureau of Mines Bulletin 134: 176.

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: 151.

MRDS database Dep. ID #10027221, MRDS ID #M002532.

A Cu-Au prospect with surface workings located on the western slope of a spur 1 mile South of sec. 32, T.9S., R.18W. and 6 miles South of Wellton.

Gneiss strikes nearly west, dips 30º towards the North, and is cut by several aplitic dikes. A narrow, lenticular, white quartz vein near on of these dikes contains some bunches of brown calcite, together with hematite and granular quartz. In places considerable copper stain is developed. The vein walls are somewhat sericitized.

Workings include a few shallow cuts.





Map Reference: 32°34'55"N , 114°7'58"W

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Mineral List:
  • Calcite
  • 'Copper Stain'
  • Hematite
  • 'Sericite'


    4 entries listed. 2 valid minerals.

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