Scheelite crystal structure
tetragonal

Scheelite

CaWO4

Quick Facts

Hardness
4.5
Specific Gravity
5.9
Refractive Index
1.918

Crystal Structure

tetragonal[4/m]:{112}@1.0 + {011}@0.7 + {001}@0.4
tetragonal
4/m
{112} {011} {001}

Physical Properties

Crystal Systemtetragonal
Hardness (Mohs)4.5
Specific Gravity5.9
CleavageDistinct {101}, poor {112}
FractureSubconchoidal to uneven
LustreVitreous to adamantine

Optical Properties

Refractive Index1.918
Birefringence0.016-0.017
PleochroismNone
Dispersion0.026

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tetragonal[4/m]:{112}@1.0 + {011}@0.7 + {001}@0.4