Neptune Mine (Neptune property; Fluorine Mine; Fluxore Mine; Turtle Green Mine; Turtle Spar Mine; Turtle Star Mine; Cardiella Mine), Gunsight Mountain, Papago District (Sierrita District), Sierrita Mts, Pima Co., Arizona, USA

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Ref.: Allen, M.A., and Butler, G.M. (1921b) Fluorspar: Arizona Bureau of Mines Bulletin No. 114, 19 p.: 7.

Arizona Department of Mineral Resources (1943) file data.

Wilson (1950) Fluorspar in Arizona, Arizona Bureau of Mines Circular 15: 11.

Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 43.

Van Alstine, R.E. and Moore, R.T. (1969) Fluorspar, in USGS & Arizona Bureau of Mines & U.S. Bureau of Reclamation, Mineral and Water Resources of Arizona, Arizona Bureau of Mines Bull. 180 (USGS Bull.871): 353.

Elevatorski, E.A. (1971), Arizona Fluorspar, Arizona Department of Mineral Resources, U.S. Bureau of Mines Report of Investigation 5651: 31.

Keith, Stanton B. (1974), Arizona Bureau of Geology & Mineral Technology, Geological Survey Branch Bull. 189, Index of Mining Properties in Pima County, Arizona: 132 (Table 4).

Elevatorski, E.A. (1978), Arizona Industrial Minerals, Arizona Department of Mineral Resources, Minerals Report No. 2.

Phillips, K.A. (1987), Arizona Industrial Minerals, 2nd. Edition, Arizona Department of Mines & Minerals Mineral Report 4, 185 pp.

Peirce, H. Wesley (1990), Arizona Geological Survey Industrial Minerals card file.

Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 224.

RFC B-368.

U.S. Bureau of Mines card file.

USGS Twin Buttes Quadrangle topo map.

Arizona Bureau of Mines file data.

MRDS database Dep. ID file #10026767, MRDS ID #M000144; and, Dep. ID #10056477, MRDS ID #TC00317; and, Dep. ID #10186542, MAS ID #0040190224; and, Dep. ID #10234566, MAS ID #0040190675.

A former small surface and underground Fluorspar mine located in the center of sec. 34, T.17S., R.11E., on the NW flank of Gunsight Mountain. Owned at times, or in part, by Neptune; and, Fluxore.

Mineralization is ore in lenses and stringers in a shear zone along a Mesozoic quartz-mica-schist-granitic contact zone with associated aplite dikes. Lenses of fluorite 2 to 5 feet thick and perhaps 25 feet long and 25 feet deep, with minor calcite and silica. Fault breccia and gouge are present.

Workings include shaft, adits and pits. A few tons of 80% F ore may have been shipped in 1918-1920 and in the 1940's.

Mineral List

Baryte

Calcite

Fluorite

3 entries listed. 3 valid minerals.