Luster
Pearly, Greasy
Waxy, Silky, Resinous, Greasy
Pleochroism
Distinct: light yellow-green to light bluE
-
Dispersion
0.020.01
0.005
1
👆🏻
Transparency
Transparent
TranslucentHerve Nicolas Lazzarelli
Refractive Index
1.571-1.5971.530-1.575
1
3.25
👆🏻
Optic Character
Biaxial/+
-
Crystal System
Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/m
-
Birefringence
-9999-9999
0
0.296
👆🏻
Clarity
Transparent
TranslucentHerve Nicolas Lazzarelli