Chalcedony from selected localities.
Bulgaria | |
| R. Atanassova, R. D. Vassileva, M. Kadiyski, Z. Zlatev (2012): Crystallographic, chemical and structural characteristics of harmotome from Zlatolist, Eastern Rhodopes, Bulgaria. Bulgarian Chemical Communications, 44 (Proceedings of the IIIrd National Crystallographic Symposium), 7-16. |
| Tschernich, 1992. Zeolites of the World |
Encheva, S., Petrov, P., Chukanov, N., Pekov, I., Енчева, С., Петко, П., ... & Пеков, И. Dachiardite-K from the area of Austa village, Momchilgrad municipality, Eastern Rhodopes–a new mineral species of zeolite group Дакиардит-K от района на с. Ауста, община Момчилград, Източни Родопи–нов минерален вид от групата на зеолитите. |
Zlatolist, Krumovgrad Municipality, Kardzhali Province, Bulgaria