Amethyst from
Armenia | |
| Pavel.M. Kartashov (n.d.) analytical data. |
Azerbaijan | |
| Grant, Raymond W. (2001) 22nd Annual FM-TGMS-MSA Mineralogical Symposium: The Minerals of Russia (Abstracts) The Mineralogical Record, 32 (1) 39-47 |
Armenia | |
| Pavel.M. Kartashov (n.d.) analytical data. |
Azerbaijan | |
| Grant, Raymond W. (2001) 22nd Annual FM-TGMS-MSA Mineralogical Symposium: The Minerals of Russia (Abstracts) The Mineralogical Record, 32 (1) 39-47 |
Idzhevanskoe bentonite deposit, Ijevan, Tavush Province, Armenia