|
USA | |
| [var. Marmatite] Witkind, I. J., (1973) Igneous Rocks and Related Mineral Deposits of the Barker Quadrangle, Little Belt Mountains, Montana: U.S. Geological Survey Prof. Paper 752, 58 P. |
| [var. Marmatite] (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Gobla, Michael J. (2012) Montana Mineral Locality Index. Rocks & Minerals, 87 (3) 208-240 doi:10.1080/00357529.2012.676825 (2005) Mineral Resources Data System (MRDS), US Geological Survey. (2005) Mineral Resources Data System (MRDS), US Geological Survey. Rocks & Min.: 14: 111. Chris Tucker and John Betts specimens. |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| [var. Marmatite] (2005) Mineral Resources Data System (MRDS), US Geological Survey. |