Template:Clinohumite

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Clinohumite
Chemical composition Magnesium silicate
Hardness 6
Optic nature Biaxial +
Refractive index 1.628 - 1.674
Birefringence 0.024 - 0.041
Specific gravity ~ 3.21
Lustre Vitreous
Pleochroism Strongly trichroic
Fluorescence

SWUV: strong orange yellow
LWUV: generally inert