Chalcopyrite from Paymaster Mining District, Chocolate Mountains, Imperial County, California, USA
USA | |
| 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 Van Nostrand Reinholt Press: 89 |
| Cal Div Mines & Geol County Report 7 "Geology and Mineral resources of Imperial Co., CA" |