tetragonal
Vesuvianite
Ca19(Al,Mg)13(SiO4)10(Si2O7)4(OH,F)10
Quick Facts
Hardness
6.5
Specific Gravity
3.32
Refractive Index
1.7
Crystal Structure
tetragonal[4/mmm]:{100}@1.0 + {110}@0.8 + {001}@0.6 tetragonal
4/mmm
{100} {110} {001}
Physical Properties
Crystal Systemtetragonal
Hardness (Mohs)6.5
Specific Gravity3.32
CleavagePoor {110}
FractureSubconchoidal to uneven
LustreVitreous to resinous
Optical Properties
Refractive Index1.7
Birefringence0.001-0.025
PleochroismWeak
Dispersion0.019
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Open in Playground tetragonal[4/mmm]:{100}@1.0 + {110}@0.8 + {001}@0.6 Related Minerals
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