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Sunset Mine (G. Helday Mine), Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA

Latitude: 31°41'14"N
Longitude: 110°5'9"W
‡Ref.: The Resources of Arizona - A Manual of Reliable Information Concerning the Territory, compiled by Patrick Hamilton (1881), Prescott, AZ: 38.

Blake, W.P. (1882) The geology and veins of Tombstone, Arizona: American Institute of Mining Engineers, Transactions: 10: 335.

Goodale, C.W. (1889) The occurrence and treatment of the argentiferous manganese ores of Tombstone district, Arizona: American Institute of Mining Engineers, Transactions: 17: 773.

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: 48.

Needham, A.B. & W.R. Storms (1956), Investigation of Tombstone district manganese deposits, Cochise Co., Arizona, US Bureau of Mines Report of Investigation 5188: 30.

Farnham, L.L., Stewart, L.A., and Delong, C.W. (1961), Manganese Deposits of Eastern Arizona, US Bureau of Mines Information Circular 7990: 37.

Keith, Stanton B. (1973), Arizona Bureau of Mines Bull. 187, Index of Mining Properties in Cochise County, Arizona: 79 (Table 4).

MRDS database Dep. ID file #10046256, MRDS ID #M241131; and, Dep. ID #10209926, MAS ID #0040030687.

A former small underground Ag-Pb-Mn-Cu-Au mine located in the SW ¼ sec. 15, T.20S., R.22E., 1¼ miles SW of Tombstone, and south of the Lucky Cuss Mine, on private land.

Mineralization is a relacement deposit with spotty, oxidized, argentiferous lead and manganese ores along a fissure vein in Laramide Uncle Sam quartz latite porphyry.

Workings are shallow. A few tons of high grade silver ore were produced in the early 1880's and some 400 tons of ore intermittently from 1921 to 1927.

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Copyright © Jolyon Ralph and Ida Chau 1993-2011. Jobs in Arizona, USA Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 30th Jun 2011 16:07:49
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