‡Ref.: Schrader (1916): 156.
Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 120 (Table 4).
USGS Sahuarita Quadrangle topo map.
Arizona Bureau of Mines file data.
MRDS database Dep. ID file #10026786, MRDS ID #M000233; and, Dep. ID #10234537, MAS ID #0040190105.
A former small surface and underground Au-Pb-Ag-Cu mine located in the NW ¼ sec. 12, T.19S., R.15E., 4¼ miles SSE of Helvetia. Discovered 1895. Closed 1932. Operated by D. Holliday (1932).
Mineralization is partially oxidized sulfides with free gold in a honey-combed, limonite-stained, quartz vein bordering a Laramide quartz latite dike cutting Precambrian granodiorite. The ore body is 0.3 meters wide.
Workings are a shallow shaft and open cut. Worked prior to 1900 and in 1932, producing a small tonnage of high-grade Au ore with minor Pb, Ag & Cu.
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Map Reference: 31°47'57"N , 110°46'6"W
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Mineral List:5 entries listed. 5 valid minerals.
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