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Llanada Copper Mine, Llanada, Panoche Valley, Diablo Range, San Benito Co., California, USA

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Latitude & Longitude (WGS84): 36° 35' 36'' North , 120° 45' 44'' West
Latitude & Longitude (decimal): 36.5933333333, -120.762222222

A Cu mine located in sec. 33, T14S, R10E (MD), about 4½ miles N of Llanada.

Mineralization is hosted in rocks of the Franciscan Formation.

Mineral List

6 valid minerals. 1 (TL) - type locality of valid minerals.

This page 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.


Mrose, M.E., Meyrowitz, R., Alfors, J.T., and Chesterman, C.W. (1966) Nissonite, CuMg(PO4)(OH)•2½H2O, a new hydrous copper-magnesium-phosphate mineral from the Panoche Valley, California. Geological Society of America Abstract 1966: 145-146.

Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 243, 375

Mrose, M.E., Meyrowitz, R., Alfors, J.T., and Chesterman, C.W. (1967) Nissonite. American Mineralogist: 52: 927 (297 ?).

Pemberton, H. Earl (1983), Minerals of California: 322-323.

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