×

Anthophyllite
Anthophyllite

Mellite
Mellite



ADD
Compare
X
Anthophyllite
X
Mellite

Anthophyllite and Mellite Optical Properties

Optical Properties

Luster

Vitreous, Pearly
Vitreous

Pleochroism

-
Weak: yellowish brown yellowAnthony et al

Dispersion

0.010.01
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.603-1.6901.509-1.541
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
-

Birefringence

-99990.030
0 0.296
👆🏻

Clarity

Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Anthophyllite and Mellite Optic Character

Anthophyllite and Mellite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Anthophyllite and Mellite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Anthophyllite and Mellite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character. Anthophyllite has Biaxial/+ character.

Anthophyllite and Mellite Transparency

Similar to their colors, Anthophyllite and Mellite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Anthophyllite is Transparent while Anthophyllite is Transparent in appearance.