Pleochroism
-
Weak: yellowish brown yellowAnthony et al
Transparency
Translucent
-
Refractive Index
1.612
1.509-1.541
Crystal System
Triclinic Pinacoidal H-M Symbol ( 1) Space Group: P1
-
Birefringence
-9999
0.030
Clarity
Translucent
TransparentUlrich Henn and Claudio C. Milisenda