Muscovite from Vitrefrax Hill (Bluebird Hill), Obregon, Cargo Muchacho Mining District (Hedges Mining District; Ogilby Mining District), Cargo Muchacho Mountains, Imperial County, California, USA
USA | |
| [var. Sericite] Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Morton, Paul K. (1977) Geology and Mineral Resources of Imperial County California. County Report 7. California Division of Mines and Geology Henshaw, P.C. (1942) Geology and Mineral Deposits of the Cargo Muchacho Mountains, Imperial County California. California Journal of Mines and Geology: 38: 153-154 Van Nostrand Reinholt Press: 425, 450. |