Phlogopite from
USA | |
| Jennifer Nemitz specimen |
| (2005) Mineral Resources Data System (MRDS), US Geological Survey. |
| Coopersmith, H. G., Mitchell, R. H., & Hausel, W. D. (2003, June). Kimberlites and lamproites of Colorado and Wyoming, USA. In Guidebook for the VIIIth International Kimberlite Conference, Colorado and Wyoming Field Trip (Vol. 32). |
Estes Park Kimberlite, Larimer County, Colorado, USA