Chilito Mine (Chillito Mine; Schneider group; Sioux group; Southwest Inspiration property; Copper States Mining Co. property; Velasco pit), Schneider Hill, Chilito, Hayden area, Banner District, Dripping Spring Mts, Gila Co., Arizona, USA

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A former surface and underground Cu-silica-Mo-Ag-Au mine located on 20 claims in the SW¼ sec. 22, T4S, R15E (Hayden 7.5 minute topo map), 1 km N80W of the New Year Mine, 4.5 miles N of Hayden, on National Forest land. Discovered in 1885 by Jake Schneider. Closed in 1962. Claims extend into secs. 23, 26 & 27. Operators included Mr. Gordon Wainwright; Chillito; Murray; Gila Canyon Consolidated; and Mr. George B. Chittenden. Additional names which apply to this property: Gila Canyon Copper Co. claims; Claim MS 4680.

Mineralization is a replacement deposit hosted in Apache group rocks (granite & diabase) and the Dripping Springs Quartzite. Sulfide ore was found in discontinuous replacement bodies. Ore control was Apache group sediments adjacent to stock. Alteration involved epidote-chlorite-clay-magnetite in diabase and quartz-sericite in other rocks. Also biotite and carbonate minerals. Associated rock units include diroite and rhyodacite. The diorite stock is 3800 feet by 1000 feet.

Workings include an open pit (1975), and an 1800 foot (548.64 meters) long tunnel.

Production used as silica flux for the smelter at Hayden. Ore assay data: 0.01-0.03% Mo, 0.1-0.8% Cu.

References

Ross, Clyde P. (1925a) Ore deposits of the Saddle Mountain and Banner Mining Districts, Arizona. USGS Bull. 771: 63.

Kuhn, T.H. (1941) Pipe deposits of the Copper Creek area. Economic Geology: 36(5): 512-538.

Wilson, E.D., et al (1951), Arizona zinc and lead deposits, part II, Arizona Bureau of Mines Bull. 158: 56-65.

Simons, F.S. (1964) Geology of the Klondyke Quadrangle Graham and Pinal Counties. USGS Professional Paper 461: 154.

Keith, S.B. (1975) Unpublished mapping.

Banks and Krieger (1977) USGS Map GQ-1391.

Arizona Department of Mineral Resources Production Possibilities of the Marginal Copper Mines in Arizona (1941): 97.

Elevatorski, E.A. (1978), Arizona Industrial Minerals, Arizona Department of Mineral Resources, Minerals Report No. 2: 31.

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

Arizona Department of Mines & Mineral Resources Primary Copper Industry of Arizona in 1987, DMMR.

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

Arizona Department of Mines & Mineral Resources Primary Copper Industry of Arizona in 1991, DMMR.

Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 7 (Table 1).

Singer, D.A., Berger, V.I., and Moring, B.C. (2008): Porphyry copper deposits of the world: Database and grade and tonnage models, 2008. US Geological Survey Open-File Report 2008-1155.

File 5803 Evaluation Exploration/Scorecard: Anaconda Geological Documents Collection, International Archive of Economic Geology, American Heritage Center, University of Wyoming.

Yale Peabody GNIS database (NOTE: this database is derived from USGS 1:24,000 topographic map data).

MSHA Yellow sheets.

U.S. Bureau of Land Management Mining District Sheet 673.

Arizona Department of Mineral Resources active files Chillito Mine file.

Arizona Department of Mineral Resources U file Cu 28.

Arizona Department of Mineral Resources Magma Chief Mine file.

USGS Hayden Quadrangle map.

MRDS database Dep. ID #10026848, MRDS ID #M000503; and Dep. ID #10185735, MAS ID #0040070232.

Mineral List

Actinolite Anhydrite Biotite Chalcocite

Chalcopyrite 'Chlorite Group' Diopside Epidote

'Garnet' Goethite Limonite Magnetite

Molybdenite Muscovite var: Sericite Pyrite

15 entries listed. 10 valid minerals.