Archive for the Pyroxene Group Category
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Refractive Index : 1.701 – 1.675 (+0.029 – 0.010)
Optical Characteristic : DR, B+, AGG
Specific Gravity : 3.29 (+0.11 – 0.07)
Formula : CaMgSi2O6
Crystal System : Monoclinic
Variety/Species : Diopside
Species/Group : Pyroxene group
Birefringence : 0.024 to 0.030
Dispersion : N/A
Hardness : 5.5 to 6
Toughness : poor
Ultrasonic : risky
Steam : Never
UV Long : weak
UV Short : Inert
Pleochroism : 2 or [...]
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Refractive Index : 1.673 – 1.663 (+0.010 – 0.010)
Optical Characteristic : DR, B+
Specific Gravity : 3.25 (+0.15 – 0.02)
Formula : MgSiO3
Crystal System : Orthorhombic
Variety/Species : Enstatite
Species/Group : Pyroxene group
Birefringence : 0.008 to 0.011
Dispersion : none
Hardness : 5 to 6
Toughness : poor
Ultrasonic : risky
Steam : Never
UV Long : Inert
UV Short : Inert
Pleochroism : 2 or 3 [...]
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Refractive Index : 1.676 – 1.662 (+0.005 – 0.005)
Optical Characteristic : DR, B+
Specific Gravity : 3.18 (+0.03 – 0.03)
Formula : LiAISi2O6
Crystal System : Monoclinic
Variety/Species : spodumene
Species/Group : Pyroxene group
Birefringence : 0.014
Dispersion : 0.017
Hardness : 6.5 to 7
Toughness : poor
Ultrasonic : Never
Steam : Never
UV Long : Inert
UV Short : Inert
Pleochroism : 2 colors
Strength : moderate
Pleochroism Colors [...]
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Refractive Index : 1.676 – 1.660 + 0.005 – 0.005
Optical Characteristic : DR B+
Specific Gravity : 3.18 + 0.03 – 0.03
Formula : LiAISi2O6
Crystal System : Monoclinic
Variety/Species : Spodumene
Species/Group : Pyroxene group
Birefringence : 0.014 to0.016
Dispersion : 0.017
Hardness : 6.5 to 7
Toughness : Poor
Ultrasonic : Never
Steam : Never
UV Long : Inert to moderate
UV Short : Inert to [...]
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Refractive Index : 1.688 – 1.640
Optical Characteristic : DR, AGG
Specific Gravity : 3.34 +0.06 – 0.09
Formula : NaAISi2O6
Crystal System : Monoclinic
Variety/Species : Jadeite Jade
Species/Group : Pyroxene Group
Birefringence : N/A
Dispersion : N/A
Hardness : 6.5 to 7
Toughness : Exceptional
Ultrasonic : Normally Safe
Steam : Normally safe
UV Long : Inert
UV Short : Inert
Pleochroism : None
Strength : N/A
Pleochroism Colors : [...]