Diopside from Madera County, California, USA
USA | |
| Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 308. Erwin, H.D. (1934), Geology and mineral resources of northeastern Madera County, California: California Division Mines Report 30: 30 |
Pemberton, H. Earl (1983) Minerals of California. Van Nostrand Reinhold Company Inc. Erwin, H.D. (1934), Geology and mineral resources of northeastern Madera County, California: California Division Mines Report 30: 30 Van Nostrand Reinholt Press: 387. |