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Phillips Asbestos Mine (Crosthwaite-Steward group; Grandview claims; Ladder Mine; Golden Fiber claims), Mule Hoof Bend (Oxbow Bend), Salt River, Salt River District, Gila Co., Arizona, USA

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Latitude & Longitude (WGS84): 33° 47' 28'' North , 110° 32' 25'' West
Latitude & Longitude (decimal): 33.79111,-110.54028

A former underground asbestos mine located in sec. 33, T5N, R17E, about 1 mile W of the bend in Mule Hoof Bend, on National Forest land. Operated by the Phillips Asbestos Co.

Mineralization is hosted in the Mescal Limestone. An associated rock unit is diabase.

Past production reported.
A former asbestos mine with several open adits and small dumps. Abundant chrysotile and serpentine can be found.

Mineral List

2 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

1000 - 1200 Ma
Middle Proterozoic diabase

Age: Stenian (1000 - 1200 Ma)

Description: Dark gray to black sills (intrusions mostly parallel to bedding) in strata of the Apache Group and irregular to sheet-like intrusions in other rocks. Present in east-central and southeastern Arizona. Some sills are more than 100 m thick. Exposures are extensive north of Globe. (1050-1150 Ma)

Comments: ~ 1.1 Ga. Associated with Grand Canyon Supergroup, and Apache Group (unit Ys)

Lithology: Major:{hypabyssal basalt,gabbro}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

This page 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.


U.S. Bureau of Mines (1945) War Minerals Report 368.

Stewart & Haury, P.S. (1947) Arizona Asbestos Deposits, Gila County, Arizona. U.S. Bureau of Mines Report of Investigation 4100: 18-20.

Stewart, L.A. (1955), Chrysotile-Asbestos Deposits of Arizona, U.S. Bureau of Mines Information Circular 7706: 57 (see Pine Top group)106-107.

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

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

USGS Blue House Mountain Quadrqangle map.

Arizona Department of Mineral Resources Phillips Asbestos file.

Arizona Department of Mineral Resources U file.

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

MRDS database Dep. ID #10060322, MRDS ID #TC10368; and Dep. ID #10282408, MAS ID #0040070543; and Dep. ID #10282888, MAS ID #0040070080.
US Bureau of Mines Information Circular 7745. Chrysotile-Asbestos Deposits of Arizona by L.A. Stewart. US Department of the Interior--May, 1956. Location map shown on page 10, Figure 7.

Mineral and/or Locality  
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