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Gaspeite
Gaspeite

Astrophyllite
Astrophyllite



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Gaspeite
X
Astrophyllite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous
-
0.05
-
1.830
-
Trigonal
0.220
-
 
Greasy, Pearly
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
0.12
Translucent
1.678-1.758
-
Triclinic
0.050
Translucent