SPHENE

Mohs Scale Hardness

Specific Gravity

Birefringence

Refractive Index

5.0 - 5.5

3.48 - 3.60

0.100 - 0.160

nα = 1.843 – 1.950
nβ = 1.870 – 2.034
nγ = 1.943 – 2.110

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