Pinetop Mine (Pine Top Mine; Pinetops deposits; Falls group of claims; Falls group prospect; Lucky Seven), Mule Hoof Bend (Oxbow Bend), Salt River, Salt River District, San Carlos Indian Reservation, Gila Co., Arizona, USA
Latitude: 33°46'36"N
Longitude: 110°31'0"W
A former underground asbestos mine/occurrence located in sec. 19, T4N, R18E, 1 mile SSW of the US highway 60-77 bridge, on a hill overlooking the Mule Hoof Bend of the river, on Indian Reservation land. Discovered 1941 and first produced 1942.
Mineralization is an exceptional stratigraphic position. The vicinity of the upper part of the algal (middle) member of the Mescal Limestone is comprised of impure, flat-bedded limestones 6 inches (15 cm) to 2 feet (0.6 meters) thick, rather than of the thick-bedded algae-bearing limestones that make up most of the middle member.
Two asbestos-serpentine zones 8 feet apart, occur near the top of the middle member of Mescal Limestone.
Area structures include a nearly vertical fault with a downthrow on the north of some 100 feet, and trends a little N of E.
Workings include 4 adits (1946), 2 at 140 feet long. Production was some 125 tons of harsh fiber and 2 to 3 tons of soft fiber (prior to 1943), plus a few hundred tons saince WWII.
Assay data: Some long, harsh to good quality asbestos fiber.
References
Wilson, E.D. (1928) Asbestos Deposits of Arizona. Arizona Bureau of Mines Bull. 126: 60.
Stewart, L.A. (1955), Chrysotile-Asbestos Deposits of Arizona, U.S. Bureau of Mines Information Circular 7706: 56-59.
Bromfield, C.S. & Shride (1956), Mineral Resources of the San Carlos Indian Reservation, Arizona, USGS Bull. 1027-N: 616, 643, 656-657.
Phillips, K.A. (1987), Arizona Industrial Minerals, 2nd. Edition, Arizona Department of Mines & Minerals Mineral Report 4, 185 pp.
MRDS database Dep. ID #10027399, MRDS ID #M003029; and Dep. ID #10102485, MRDS ID #M003034; and Dep. ID #10137006, MAS ID #0040070083.
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.
Mineral and Locality Search
