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Suprise Mine (Old Jackass Brown), Madera Peak (Jackass Mountain), Madera Co., California, USA

Latitude: 37°31'26"N
Longitude: 119°19'8"W

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A former lode Au mine located in the SW¼ (estimated) sec. 2, T5S, R24E, MDM, 5.2 km (3.2 miles) ESE of Madera Peak, on the divide between Jackass Creek and Norris Creek (1 mile ESE of Norris Lake on the SE slope of Madera Peak), on National Forest land. MRDS database stated accuracy for this location is 10 meters.

Mineralization is a vein deposit with a vein a few inches thick. The ore body dips 60SE. Local rocks include Mesozoic granitic rocks, unit 3 (Sierra Nevada, Death Valley area, Northern Mojave Desert and Transverse Ranges).

Workings include surface and underground openings comprised of a 40 foot shaft and a 100 foot adit plus open cuts.

Mineral List

Gold

Quartz

2 entries listed. 2 valid minerals.

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References

Crawford, James John (1894), Twelfth report of the State Mineralogist: California Mining Bureau. (Report 12): 12: 164.

USGS (1964), Miscellaneous Field Studies map MF-281.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10103209 & 10236039.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060390229.

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Copyright © Jolyon Ralph and Ida Chau 1993-2013. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: 10th Apr 2013 21:19:39