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L and N group of claims (Oneida group; Ward group), Gila County belt, Sunflower District (Mazatzal Mountains District; Quicksilver District), Mazatzal Mts, Maricopa Co., Arizona, USA

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‡Ref.: Ransome, F.L. (1916), Quicksilver Deposits of the Mazatzal Range, Arizona, in Contributions to Economic Geology by F.L. Ransome & H.S. Gale, USGS Bull. 620: 121, 125; AZ Bur. Mines Bull. 122 (1927); Bailey, E.H., USGS, personal files; DeWitt, Ed (1981), unpublished reconnaissance mapping; USGS 7.5 minute Reno Pass topo. map; AZ Dept. Min. Resources (ADMR) Oneida Mine file; Bur. Land Mgmt. AZ mineral claim file #15945; Beckman, R.T. & W.H. Kerns (1965), Mercury in Arizona, US Bur. Mines Info. Circ. 8252: 66; MRDS files #10040378 & 10283511.

A group of 6 or 7 mercury claims discovered and owned by Christopher Martin and others. This group of claims is located on the SW end of the Gila belt, overlapping the Maricopa belt; however, these claims are in Maricopa County since the designation of the belts is a convenience based on relationship to local rock strata.

Mineralization is some rich stringers of quartz and cinnabar up to an inch (2.5 cm) in width. Associated rock units are the Stanley shale, Penn shale & sandstone. Related structure: NE-trending rhyolite porphyry, probably Precambrian, and Precambrian purple phyllites and shales; NE-trending Precambrian sedimentary and volcanic sequence.

Workings are shallow prospecting pits.

Mineral List

4 entries listed. 4 valid minerals.

The above list contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
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