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Black Gap Mine (Gila Bend Celestite Mine; Montezuma claims 1; 2; 3; 4 & 5; Montezuma claims; Strontium group), Luke Air Force Base, Maricopa Co., Arizona, USA

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Ref.: Phalen, W.C. (1914), Celestite deposits in California and Arizona, in White, David, Contributions to Economic Geology: USGS Bull. 540 521-533; Elevatorski, E.A. (1978), Arizona Industrial Minerals, AZ Dept. of Min. Resources, Min Rpt. No. 2; Moore, R.T., (1969), Strontium salts, in AZ Bur. Mines Bull. 180 (USGS Bull. 871): 454; Phillips, K.A. (1987), Arizona Industrial Minerals AZ Dept. of Mines and Mineral Resources Mineral Rpt. 4: 38; Keith, S.B. (1990), Gypsum, in USGS, AZ Bur. Mines, and US Bur. Of Reclamation (1969), Mineral and Water Resources, AZ Dept. Min. Res. Bull. 180; Miller, G., AZ Dept. Min. Resources (ADMR) status of Mineral resources information for Luke Air Force Range, AZ: 86; AZ Dept. Min. Resources (ADMR) Strontium group file; MRDS files #10060160, 10113396, 10186268 & 10060259.

A former surface gypsum-Sr mine located in secs. 3, 5, 8, 9, 10, T.8S., R.5W.

Mineralization is celestite that occurs in beds within tuff at several horizons.

Mineral List

3 entries listed. 3 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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