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El Oso Mine (New Discovery Mine; Harrison Mine), El Oso group of claims, Jolene Mine (Cline Mine/claims; Jolene group; El Oso properties; Mazatzal group; Blue Bull Mine), Pine Mountain area, Mazatzal West District, Mazatzal Mts, Gila Co., Arizona, USA

Latitude: 33°45'12"N
Longitude: 111°22'36"W
A former surface and underground W-Mo mine located in sec. 19, T5N, R10E, about 1 mile NE of Pine Mountain and about 5½ miles NW of Four Peaks, on the crest of the Mazatzal Mountains 6 miles W of the N end of Theodore Roosevelt Lake, on National Forest land. Discovered in 1941 by E.R., P.J., & H.G. Harrison and Bern Swensk. Also entends into Maricopa County. Owned by Mr. Marvin Harrison of Fresno, California (1961).

Mineralization is a vein deposit with a linear ore body hosted in pegmatite. The ore zone is 9.14 meters long and 1.52 meters wide, striking N75W and S24E, and dipping N and W. Ore control was steep fissures intruded by aplite or pegmatite dikes.

Area structures include granite cut by a mile wide belt of granite porphyry.

Workings are 121. 92 meters long and 3.05 meters deep.

References

Wilson, E.D. (1941), Tungsten Deposits of Arizona. Arizona Bureau of Mines Bull. 148: 31.

Dale, V.B. (1961), Tungsten Deposits of Gila, Yavapai, and Mohave Counties, Arizona, US Bureau of Mines Information Circular 8078.

MRDS database Dep. ID #10027337, MRDS ID #M002890.

Mineral List

Fluorite
Molybdenite
Pyrite
Scheelite
'Tourmaline'
Wolframite


6 entries listed. 4 valid minerals.

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