×

Achroite
Achroite
☒

Eosphorite
Eosphorite
☒



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X
Achroite
X
Eosphorite
Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
-
-
0.02
Transparent, Translucent
1.614-1.666
-
-
0.014-0.040
Transparent
 
Vitreous, Resinous
Visible: X = yellow; Y = pink; Z = pale pink to colorless
0.01
Transparent
1.639-1.672
-
Orthorhombic
0.029-0.032
Transparent