Baryte from Black Diamond Peak, Middle Pass Mining District, Cochise County, Arizona, USA
USA | |
| Robert Willken collected |
Keith, Stanton B. (1973), Arizona Bureau of Geology & Mineral Technology, Geol. Sur. Branch Bull. 187, Index of Mining Properties in Cochise Co., AZ: 69 (Table 4) Wilson (1951): 28. Cederstrom (1946a) |