Chrysoprase from Kazakh Steppes (Kirghiz Steppes; Great Dala), Kazakhstan/Russia
Kazakhstan | |
| Bespaev H.A., Uzhkenov B.S., Aliaskarov S.A., Egembaev K.M. (Almaty, 1999) Gemstones of Kazakhstan, Reference book. Volume 1. Deposits and occurrences of precious and semiprecious stones. |
Russia | |
| Mikhailov, B.M. (2000): Lithology and Mineral Resources 35(4), 351-364. |