|
USA | |
| Luetcke, Rolf (n.d.) Personal communication. |
| Luetcke, Rolf (n.d.) Personal communication. |
| [var. Chalcedony] Ref.: Keith, Stanton B. (1973), Arizona Bureau of Geology & Mineral Technology, Geol. Sur. Branch Bull. 187, Index of Mining Properties in Cochise Co., AZ: 56 (Table 4) |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 383 Palache, Charles (1941) Crystallographic notes: cahnite, stolzite, zincite, ultrabasite. American Mineralogist, 26 (7) 429-436 |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 133 Rocks & Min.:65:458. |
| Luetcke, Rolf (n.d.) Personal communication. |
| Luetcke, Rolf (n.d.) Personal communication. |
| Luetcke, Rolf (n.d.) Personal communication. |
| Galbraith, F.W. & D.J. Brennan (1959), Minerals of AZ: 83. |
| Luetcke, Rolf (n.d.) Personal communication. |
| Luetcke, Rolf (n.d.) Personal communication. |
| Keith, Stanton B. (1973), Arizona Bureau of Geology & Mineral Technology, Geol. Sur. Branch Bull. 187, Index of Mining Properties in Cochise Co., AZ: 56 (Table 4). |
| Luetcke, Rolf (n.d.) Personal communication. |
| [var. Chalcedony] Luetcke, Rolf (n.d.) Personal communication. |
| Luetcke, Rolf (n.d.) Personal communication. |
| [var. Rock Crystal] Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 362 Romslo, T.M. (1949), Investigation of Keystone and St. George copper-zinc deposits, Cocbhise Co., AZ, US Bur. Mines Rept. Inv. 4504. |
| Luetcke, Rolf (n.d.) Personal communication. |
| Luetcke, Rolf (n.d.) Personal communication. |
| [var. Rock Crystal] Wilson, E.D. (1941), Tungsten deposits of Arizona, AZ Bur. Mines Bull. 148: 42-43. |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 346, 422. |
| Luetcke, Rolf (n.d.) Personal communication. |
| P Cristofono collection, 2007 |
Cochise Mining District, Cochise County, Arizona, USA