Merchant Mine (Crescent Mine), Rosemont (Rosemont Camp), Helvetia-Rosemont District, Santa Rita Mts, Pima Co., Arizona, USA
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U.S. Bureau of Mines file 464.201900, circa 1942.
MRDS database Dep. ID file #10137966, MAS ID #0040190644.
A former underground Cu-Au-Ag-Zn mine located in the NE¼SE¼ sec. 25, T18S, R15E. Albert Mueller had unknown involvement here (1942).
Mineralization is a fissure vein with a tabular ore body of hydrothermal and contact metasomatic origin.
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