Biotite from selected localities.
USA | |
| Gleba, 1978. Massachusetts Mineral & Fossil Localities |
| "Western Massachusetts Mineral Localities" by Plante, A.R., Valley Geology Press, 1992 |
| Plante, Alan (1992): Western Massachusetts Mineral Localities (Valley Geology Press) |
No reference listed | |
No reference listed | |
U.S. GEOLOGICAL SURVEY Open-File Report 79-354 | |
Western Massachuetts Mineral Localites by Plante, A.R., Valley Geology Press, 1992. Chute, Newton E. (1969) The talc, soapstone, and asbestos deposits of Massachusetts; USGS Open-File Report 69-39, p. 8-10. |