Wulfenite crystal structure
tetragonal

Wulfenite

PbMoO4

Quick Facts

Hardness
2.5-3
Specific Gravity
6.7-7.0
Refractive Index
2.28-2.40

Crystal Structure

tetragonal[4/m]:{001}@1.0 + {101}@0.4
tetragonal
4/m
{001} {101}

Physical Properties

Crystal Systemtetragonal
Hardness (Mohs)2.5-3
Specific Gravity6.7-7.0
CleavageDistinct {101}
FractureSubconchoidal to uneven
LustreAdamantine to resinous

Optical Properties

Refractive Index2.28-2.40
Birefringence0.12-0.122
PleochroismVery weak to none
Dispersion0.203

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tetragonal[4/m]:{001}@1.0 + {101}@0.4