| Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 385 Tucker, W. Burling (1921), Los Angeles field division: California Mining Bureau. Report 17: 340 Van Nostrand Reinholt Press: 332. |