| Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Wells, F.G. and Hawkes, H.E. (1965) Chromite deposits of Shasta, Tehama, Trinity and Humboldt counties, California. California Division Mines and Geology Bulletin 134, part 1, chapter 3: 185-189, Pl. 19 Van Nostrand Reinholt Press: 156. |