Mountain Queen Mine (Schribner Mine; Scribner Mine; Randall lease), Cochise County, Arizona, USAi

Regional Level Types
Mountain Queen Mine (Schribner Mine; Scribner Mine; Randall lease)	Mine
Cochise County	County
Arizona	State
USA	Country

A former small Pb-Ag-Cu-Au mine located in South-central sec. 12, T.20S., R.27E. (Swisshelm Mountain 15 minute top map), northeastern part of the Swisshelm Mountains, at 5,500 feet of altitude, about 2 miles N of Swisshelm Mountain, on federal land. It adjoins the Chance shaft property. Discovered in 1885 by John (?) Scribner of Tombstone. Produced 1885-1953. Owned at times, or in part, by the Four Horse Mining Co., Manhattan Consolidated Mines Development Co. and the Gold Metals Consolidated Mining; and, Dr. Edwin Larson of Los Angeles (as of 1951). Operated by Mr. R. L. Brown (1953). Other past operators include Fandall, Haynie, Farwell, and Hunt. On one of a group of three claims, the Scribner; the other two being the Mammoth and the Whale.

Mineralization is mostly oxidized galena with minor copper in irregular replacement orebodies along the contact of folded, faulted and fractured Pennsylvanian-Permian Naco Group limestone and diorite porphyry intruded along a strong thrust fault. The beds generally strike N.35ºW. and dip 25º to 50º SW. The ore zone is 30.48 meters long, 15.24 meters wide, and 3.05 meters thick.

The Naco formation is part of an overthrust plate of Paleozoic sedimentary rocks which is underlain by a tabular body of diorite porphyry intruded along the plane of the thrust fault. The horizontal compression which resulted in the thrust faulting also produced minor folds in the Naco Formation, the axes of which trend northwesterly. Vertical tension fractures have formed parallel to the fold axes, and a series of fractures with northeasterly strike and steep dips have developed at right angles to the trend of the folds. bedding slips with northwesterly strike and low northeasterly dips are also present.

The orebodies occur as replacements in the Naco formations at the upper contact with, or not far above, the diorite porphyry. Some of the individual orebodies attain a length of 100 feet, a width of 50 feet, and a thickness of 10 or more feet.

Workings include a 2-compartment shaft (completed 1947) to the 210 foot level, adits, drifts and stopes, aggregating about 1,000 feet 304.8 meters) of workings to a depth of 64.01 meters. Workings include at least one interconnected underground with the Chance Mine. A total of some 50,000 tons of ore were produced intermittently from 1885 to 1913, 1921 to 1933, and 1939 to 1954. Pre-1913 production was not reported in ABGMT-USBM files. ABGMT-USBM figures include the Great American Mine for 1925, 1933, and 1934.

References

Other Databases

Link to USGS MRDS:	10102440

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