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USA | |
| [var. Marmatite] (1951, July) Arizona Zinc and Lead Deposits - Part II. University of Arizona Bulletin 158. Arizona Bureau of Mines Wilson, E.D. (1933), AZ Bur. Mines Bull. 137: 40, 70-71 |
- Ellsworth Mining District
| (n.d.) ADMMR Mines Database, Arizona Geological Survey. Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geol. Sur. Br. Bull. 192, Index of Mining Properties in Yuma Co., Arizona: 149 (Table 4) Dale (1959): 15-16 |
- Imperial National Wildlife Refuge
| [var. Marmatite] (n.d.) ADMMR Mines Database, Arizona Geological Survey. Keith, Stanton B. (1978) State of Arizona Bureau of Geology and Mineral Technology, Geol. Sur. Br. Bull. 192, Index of Mining Properties in Yuma Co., Arizona: 178 (Table 4) |