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USA | |
| [var. Silver-bearing Galena] Duflot de Mofras, Eugene (1937), Travels on the Pacific coast: exploration du territorie de l’Oregon, des Californies et de la mer Vermeille, 1840-1842, translated by Marguerite E. Wilbur, Pasadena, 2 volumes: 215 Eakle, Arthur S. (1914) Minerals of California. Bulletin 67. California State Mining Bureau Jenkins, W.W. (1906), History of the development of placer mining in California: Historical Society of Southern California, Annual Pub., vol. 7: 70. Robinson, Alfred (1891), Life in California, 182 pp., San Francisco: 152 Blake, Wm. P. (1858), Report of a geological reconnaissance in California 370 pp., New York.: 295, 301 |
| Murdoch, Joseph, Webb, Robert W. (1966) Minerals of California, Centennial Volume (1866-1966) - California Division Mines and Geology, Bulletin 189. p.1-559. Huguenin, Emile & W.O. Castello (1921), San Mateo County: California Mining Bureau. Report 17: 172 |
| Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Gross, E.B., Chesterman, C.W., Dunning, G.E., and Cooper, J.F. (1967) Mineralogy of the Kalkar quarry, Santa Cruz, California. California Division Mines and Geol. Special Report 92: 3-10 Van Nostrand Reinholt Press: 105, 138. |