Falls claim, Helvetia-Rosemont District, Santa Rita Mts, Pima Co., Arizona, USA
Ref.: Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 125 (Table 4).
Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 12 (Table 1).
USGS Sahuarita Quadrangle topo map.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10026769, MRDS ID #M000172; and, Dep. ID #10186708, MAS ID #0040190223.
A former small underground Cu-Ag mine/claim located in the center (NW¼SE¼) of sec. 25, T.18S., R.15E. (Sahuarita 15 minute topo map), 2 miles SE of Helvetia. Produced 1958-1959. Owned by the Lewisohn Copper Co. (1959); owned and operated by ASARCO (1988-1994 and beyond). The Falls patented claim is part of the Helvetia property owned by ASARCO (1992).
Mineralization is copper carbonates and sulfide in irregular pyrometasomatic lenses in thrust-faulted segments of silicated Paleozoic limestone, cut by cross-faulting.
Workings include a shallow shaft and tunnel. Some 170 tons of ore averaging about 5% Cu and 0.3 oz. Ag/T were produced in 1958-1959.
No entries listed.
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
This page is currently not sponsored. To sponsor this page click here.
|Fade toolbar when not in focus||Fix toolbar to bottom of page|
|Hide Social Media Links|
|Slideshow frame delay||seconds|
New Locality Added: Batesford Quarry, Batesford, City of Greater Geelong, Victoria, AustraliaFrom Judy Rowe, 19th Apr 2014 04:33:04