Bluish black "knobbly" fluorite octahedra on a flat, yellow muscovite matrix, and with a thin intermediate layer of colourless bertrandite blades (best viewed under a microscope).
AN_474
1 Item
Data sheet
Locality
Akchatau, Karaganda region, Kazakhstan
Size category
Small cabinet
Size (cm)
7 x 6 x 3.3
Weight
195 g
Formula
CaF2
Properties
Octahedral; perfect cleavage; purplish black colour; silky lustre