Shortite

Shortite is named after M.N. Short, Professor of Mineralogy, University of Arizona, Tucson, USA.

Shortite forms characteristic transparent colourless, light yellow, yellow, light green wedge-shaped crystals. The material slowly decomposes in water.

Shortite is a very rare gem. Faceted stones are scarce.
General Information
Chemical Formula
Na
 
2
Ca
 
2
(CO
 
3
)
 
3
Michael O’Donoghue, Gems, Sixth Edition (2006)
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Physical Properties of Shortite
Mohs Hardness3
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Specific Gravity2.61
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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TenacityBrittle
Arthur Thomas, Gemstones (2009)
Cleavage QualityDistinct
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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FractureConchoidal
Arthur Thomas, Gemstones (2009)
Refractive Index1.530 to 1.569
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Optical CharacterBiaxial/-
Ulrich Henn and Claudio C. Milisenda, Gemmological Tables (2004)
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Birefringence
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