Gypsum from Hardshell Mine (Manto Mine; Eagle-Picher properties), Hardshell Gulch, Harshaw, Harshaw Mining District, Patagonia Mountains, Santa Cruz County, Arizona, USA
USA | |
| [var. Selenite] Betts, John (n.d.) John Betts website listing. |
USA | |
| [var. Selenite] Betts, John (n.d.) John Betts website listing. |