The cavities in vein bulges are filled with reddish brown clay, sometimes accumulations of bluish earthy scorodite and broken crystals of smoky quartz, beryl and topaz.
Ref: E.Ya. Kievlenko, Geology of gems, 2003, p. 116
Gem list contains entries from all listed localities in region.
Localities in this Region
- Zabaykalsky Krai
- Chitinskaya Oblast
- Nerchinsk (Nertschinsk)
- Nerchinsk Gem mines
- Adun-Cholon Range
- Sherlova Gora (Sherlovaya Gora)