Indicolite Blue Tourmaline and Hibonite Optical Properties

Indicolite Blue Tourmaline

Hibonite

Hibonite

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1 Optical Properties

1.2 Luster

Not Available

Vitreous

1.3 Pleochroism

Strong: dark blue light blueWalter Schumann

O = brownish gray; E = gray

1.4 Dispersion

0.02NA

0.007 1

2.11 Transparency

Transparent, Translucent

Handbook of mineralogy (2001)

2.12 Refractive Index

1.614-1.6661.79-1.807

1 3.25

2.14 Optic Character

Not Available

2.16 Crystal System

Not Available

Hexagonal

3.3 Birefringence

0.014-0.040Not Available

0 0.296

3.5 Clarity

Transparent

Handbook of mineralogy (2001)

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