A Ag-Mn-Au mine located in the southern border area of secs. 14 & 15, T.20S. R.22E. Owned by the Boston & Arizona Smelting & Reduction Co. and the Tombstone Development Co.

Mineralization is irregular, pipe-like to tabular replacement orebodies, mainly oxidized manganiferous-silver ores, along the footwall of the Prmpter fault zone in Pennsylvanian-Permian Naco Group limestone and controlled by bedding plane slips and 'northeast' fractures.

Workings include shaft openings. A few tens of thousands of tons of ore were produced in the group at irregular intervals from 1883 to 1950.

List of minerals for each chemical element

Other Regions, Features and Areas containing this locality

Mexico

Sierra Madre OccidentalMountain Range

North AmericaContinent

Sonoran DesertDesert

North America PlateTectonic Plate

USA

Arizona
- Cochise County
  - Tombstone HillsGroup of Hills

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References

Arizona Bureau of Mines files.

Goodale, C.W. (1889) The occurrence and treatment of the argentiferous manganese ores of Tombstone district, Arizona: American Institute of Mining Engineers, Transactions: 17: 767.

Church, J.A. (1903) The Tombstone, Arizona, mining district: American Institute of Mining Engineers, Transactions: 33: 29-31.

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: 13, 42, 44, 47, 72, 80, 82-83, 106, Pl. III, IV & XIV.

Romslo, T.M. & S.F. Ravitz (1947), Arizona manganese-silver ores, US Bureau of Mines Report of Investigation 4097: 7.

Needham, A.B. & W.R. Storms (1956), Investigation of Tombstone district manganese deposits, Cochise County, Arizona, US Bureau of Mines Report of Investigation 5188: 4-21.

Farnham, L. L., Stewart, L. A., DeLong, C. W. (1961) Manganese Deposits of Eastern Arizona. Information Circular 7990. Bureau of Minesp.27

(1973) Index of Mining Properties in Cochise County, Arizona. University of Arizona Bulletin 187. Arizona Bureau of Mines p.78

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