tetragonal
Cassiterite
SnO2
Quick Facts
Hardness
6.5
Specific Gravity
6.85
Refractive Index
1.997
Crystal Structure
tetragonal[4/mmm]:{100}@0.8 + {101}@1.0 + {111}@0.4 tetragonal
4/mmm
{100} {101} {111}
Physical Properties
Crystal Systemtetragonal
Hardness (Mohs)6.5
Specific Gravity6.85
CleavagePoor prismatic {100}
FractureSubconchoidal to uneven
LustreAdamantine to vitreous
Optical Properties
Refractive Index1.997
Birefringence0.096-0.098
PleochroismVariable (none to strong yellow-green, brown, reddish-brown)
Dispersion0.071
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Open in Playground tetragonal[4/mmm]:{100}@0.8 + {101}@1.0 + {111}@0.4 Related Minerals
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