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Opal from Kazakh Steppes (Kirghiz Steppes; Great Dala), Kazakhstan/Russia

Kazakhstan
 
  • Aktobe Region
    • Khromtau District
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.
    • Mugalzhar District
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.
  • Pavlodar Region
    • May District
Bespaev, Kh.A., Uzhkenov, B.S., Aliaksarov, S.A., and Egembaev, K.M. [Беспаев, Х.А., Ужкенов, Б.С., Алиаскаров, С.А., и Егембаев, К.М.] (2001) Gemstones of Kazakhstan. Reference book. Volume II. Semi-precious and ornamental stones [Самоцветы Казахстана. Справочник. Том II. Ювелирно-поделочные и поделочные самоцветы]. Information-Analytical Center for Geology and Mineral Resources of the Republic of Kazakhstan [Информационно-аналитический центр геологии и минеральных ресурсов Республики Казахстан], Almaty, pages 106-107 (in Russian).
Russia
 
  • Orenburg Oblast
    • Svetlyi District
      • Buruktal District
[var. Prase Opal] Mikhailov, B.M. (2000): Lithology and Mineral Resources 35(4), 351-364.
Mikhailov, B.M. (2000): Lithology and Mineral Resources 35(4), 351-364.
 
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