Intervener Mine (Silver Bill Mine; Costello claim), Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA
Ref.: Church, J.A. (1903) The Tombstone, Arizona, mining district: American Institute of Mining Engineers, Transactions: 33: 12.
Butler, B.S., Wilson, E.D., and Rasor, C.A. (1938b), Geology and ore deposits of the Tombstone district, Arizona, Arizona Bureau of Mines Bull. 143: 77.
Keith, Stanton B. (1973), Arizona Bureau of Mines Bull. 187, Index of Mining Properties in Cochise County, Arizona: 77 (Table 4).
Arizona Bureau of Mines files.
MRDS database Dep. ID file #10046261, MRDS ID M241138; and, Dep. ID #10136693, MAS ID #0040030632.
A former small surface and underground Ag-Pb-Au mine located on 1 claim, in the center of sec. 11, T.20S., R.22E, approximately 1/4 mile
S of Tombstone, on private land. Discovered, and claim patented, in 1880. Owned at times, or in part, by Costello and Giacoma Brothers (sic).
Mineralization is a replacement deposit of irregular, oxidized orebodies of argentiferous galena along a 'northeast' fissure zone cutting Cretaceous Bisbee Group limestone and shales.
Local structures include the Tombstone Basin. Faulting occurred on WNW and NNW trends, post-mineralization.
Workings are both on surface and underground. A shaft at 200 feet deep existed in 1947. A relatively small, sporadic production occurred in the late 1800's and early 1900's, and a few hundred tons in the 1940's.
var: Argentiferous Galena
1 entry listed.
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