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Donaldson Mine (Donaldson prospect), Wellton, 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: 175.

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 file #10027222, MRDS ID #M002536.

A Cu prospect with underground workings located about 1¾ miles SE of the Poorman prospect.

Mineralization is rather sheared & schistose gneiss that dips generally eastward. A prominent quartz vein up to 15 feet thick, with irregular strike and dip, cuts across a small saddle. Vein quartz is white, somewhat fractured & marked by iron oxide bands. Vein walls show abundant sericite, minor chlorite and sparse copper stain.





Map Reference: 32°34'4"N , 114°4'56"W

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Mineral List:
  • 'Chlorite Group'
  • 'Copper Stain'
  • 'Sericite'


    3 entries listed.

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