Thin, tabular and colourless bertrandite and yellow muscovite completely covering this small specimen
AN_381
1 Item
Data sheet
- Locality
- Akchatau, Karaganda Region, Kazakhstan
- Size category
- Miniature
- Size (cm)
- 3.5 x 3.5 x 1.8
- Weight
- 16 g
- Formula
- Be4(Si2O7)(OH)2
- Properties
- Vitreous; transparent; brittle; colourless