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Langbeinite
Bastnasite
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Summary
Astrology
Physical Properties
Optical Properties
Benefits
All
1 Optical Properties
1.1 Luster
Vitreous, Greasy, Pearly
Vitreous
1.2 Pleochroism
Faint
Not Available
1.3 Dispersion
NA
NA
Fluorite Optical Properties
▶
⊕
0.007
1
2.8 Transparency
Gemmological Tables (2004) More from other references
Not Available
2.9 Refractive Index
1.717-1.722
1.5329-1.5347
Agate Opal
▶
⊕
1
3.25
2.11 Optic Character
Not Available
Not Available
3.3 Crystal System
Hexagonal
cubic
3.5 Birefringence
0.100
Not Available
Achroite
▶
⊕
0
0.296
3.6 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Not Available
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