‡Ref.: Wilson, E.D. & Butler, G.M. (1930), AZ Bur. of Mines Bull. 127, Manganese ore deposits in AZ: 74-75; Jones, E.L., Jr. & F.L. Ransome (1920), Deposits of manganese ore in Arizona, USGS Bull. 710-D: 147-148.
A group of 3 manganese claims located in the West-central sec. 33, T.17N., R.13W., about 6 miles NW of Alamo, in an arroyo. Owned by W.J. Graham, Craig & Creighton of Phoenix (formerly owned by Carr, Rider & Bendervald). Started about 1918.
Two deposits occur within these claims. One lies on a small hill at an approximate altitude of 2,100 feet. The second is about 250 feet above the arroyo and ¼ mile East of it and is cut by the arroyo, but the greater part extends west of it to the base of the mesa and is partly covered by basalt talus. The first deposit is exposed for about 250 feet on its strike with an average width of 50 feet. A block of ore has been faulted down for a few feet from the main mass, and the whole deposit appears to lie along a major fault which brings schist and granite rocks adjacent to the younger sandstone and basalt. East of the deposit and about 75 feet above it is a breccia composed of fragments of quartzite and schist that is stained and in places cemented by iron and manganese oxides. Red and brown, slightly indurated sandstones underlie the manganese bed and dip about 15ºSW.
The deposit on the West side of the arroyo can be traced for 1,000 feet and is from 50 to 400 feet wide. It lies on the surface as a shell from 1 to 3 feet thick.
Both deposits replace sandstone beds and are now completely exposed except for surface debris.
Mineral List
1 entry listed.
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.
Mineral and Locality Search
