Titanite from Boulder Batholith, Jefferson County, Montana, USA
USA | |
| Lapidary Journal, May 1985 (William C. van Laer) |
| WC van Laer, 2008 |
van Laer, W.C. (1979) Tourmalines of the Homestake Pass. Lapidary Journal, 33, 58-64. | |
Rocks and Minerals Vol. 87, no 3 May/June | |
Wm. C. van Laer. | |
WC van Laer, 1985 | |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. The Lapidary Journal, May 1985 |
Boulder Batholith, Jefferson County, Montana, USA