Fluorite from White Rock Mining District, Middletown, Middlesex County, Connecticut, USA
USA | |
| Bastin, Edson S. (1910): Economic Geology of the Feldspar Deposits of the United States. U. S. Geol. Survey Bull. 420. |
Ryerson (1972) Schooner (1958) |
USA | |
| Bastin, Edson S. (1910): Economic Geology of the Feldspar Deposits of the United States. U. S. Geol. Survey Bull. 420. |
Ryerson (1972) Schooner (1958) |
Riverside Quarry, White Rock Mining District, Middletown, Middlesex County, Connecticut, USA