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Amblygonite
Amblygonite

Clinothulite
Clinothulite



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Amblygonite
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Clinothulite
1 Optical Properties
1.1 Luster
Vitreous, Pearly
Not Available
1.2 Pleochroism
weak to none
Not Available
1.3 Dispersion
0.01NA
Fluorite Optical Properties
0.007 1
2.4 Transparency
Gemmological Tables (2004) More from other references
Not Available
2.5 Refractive Index
1.578-1.646Not Available
Agate Opal
1 3.25
2.8 Optic Character
Biaxial/+
Not Available
2.9 Crystal System
Triclinic
Not Available
2.11 Birefringence
0.020-0.030Not Available
Achroite
0 0.296
3.2 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Not Available