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Pointing Cactus group (Grier-Nichols claims), Indian Head area, Sawtooth District, Sawtooth Mts, Ironwood Forest National Monument, Pinal Co., Arizona, USA

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A group of Mn-Cu claims and former surface and underground mine located on 5 adjoining, unpatented claims, in the NW¼ sec. 22, T9S, R6E (Eloy 15 minute topo map), about 1¾ miles NW of Indian Head Peak and about 13 miles SW of Eloy, on federal land. Discovered 1953 by Isaac Nichols and G.E. Grier, and produced 1953-1956.

Mineralization is veinlets, pods and lenses that strike N20-40E, dip 65NW to 85SE, at 1.83 meters wide and 60.96 meters long. A series of NE-trending fractures containing Mn minerals cut rhyolitic rocks. Mineralization surrounds breccia fragments, where present. Ore control was faults in rhyolite. Mineralization includes secondary copper minerals. Area structures include block faulting trending NNW.

Much of the ore on these claims contains up to 1.75% Cu, making the Mn ore much less desirable. High Cu on claims 2 and 6; better Mn ore on claim 1. High Mn content (42.5%) is associated with high Cu values.

Workings include a 30 foot vertical shaft on claim 1; an open cut on claim 6; an opencut 15 by 4 by 6 feet deep on claim 2; and an opencut 20 by 6 by 14 feet deep on claim 5. These mines were inactive in 1956. Good road access except for the last 3 miles, which are primitive truck trail.

Mineral List



2 entries listed. 1 valid mineral.

The above list contains all mineral locality references listed on mindat.org. 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 mindat.org 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.

References

Farnham, L.L., Stewart, L.A., and Delong, C.W. (1961), Manganese deposits of eastern Arizona, US Bureau of Mines Information Circular 7990: 155-156.

Niemuth, N.J. & K.A. Phillips (1992), Copper Oxide Resources, Arizona Department of Mines & Mineral Resources Open File Report 92-10: 15 (Table 1).

USGS 15 minute Eloy Quadrangle map.

MRDS database Dep. ID #10088603, MRDS ID #M050193; and Dep. ID #10259510, MAS ID #0040210982.

 
Mineral and/or Locality  
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