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Sphalerite

IMA-Approved Mineral Species


Properties and Data
Physical Properties
Composition
ZnS
Chemical Name
Zinc Sulfide
Molecular Weight
97.442 g/mol
Density
3.9 - 4.1 g/cm3
Mohs Hardness
3.5 - 4
Member of
Sphalerite Group
Crystal System
Isometric
Optical Properties
Type
Isotropic
Refractive Index
n = 2.368 - 2.5
Dispersion Factor
0.163
Additional Information
Otherwise known by Cleiophane, Blende, Zinc Blende, Ruby Blende, Ruby Jack, Marmatite, or Black Jack

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Variants and Types
Intrinsic
Intrinsic
Color: Colorless to Amber
Used for Specialty Optics
Cr:ZnS
Cr:ZnS
Color: Amber to Vermillion
Cause: Chromium Ions
Used for Infrared Lasers, Specialty Optics
Production and Synthesis
Chemical Vapor Deposition
CVD
Involves leeching specialty gasses onto a heated / pressurized environment with seed crystals. Slowly builds up atomic layers of material until a solid crystal is produced.
References
REFERENCES





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