Shortite Value, Price, and Jewelry Information

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SHORTITE: Wyoming (0.5). Photo © Joel E. Arem, PhD, FGA. Used with permission.

Shortite is an exceedingly rare, not overly attractive mineral. Cut gems are among the rarest of all faceted stones. The material is a carbonate and is therefore fragile and soft.

Shortite Information

Data Value
Name Shortite
Stone Sizes Very small, less than 1 carat.
Formula Na2Ca2(CO3)3
Colors Colorless to pale yellow.
Fracture Conchoidal
Hardness 3
Cleavage Distinct 1 direction
Crystallography Orthorhombic. Crystals wedge-shaped, to maximum size of 155 mm.
Refractive Index 1.531-1.570
Birefringence 0.039
Luminescence Pinkish orange to orange-brown in SW (Green River, Wyoming).
Luminescence Present Yes
Luminescence Type Fluorescent, UV-Short
Absorption Spectrum Not diagnostic.
Optics = 1.531; β = 1.555; γ = 1.570. Biaxial (+), 2V = 75°.
Optic Sign Biaxial +
Luster Vitreous.
Specific Gravity 2.60
Transparency Transparent.

Optics: a=1.531; β=1.555; γ=1.570.

Biaxial (+),2V = 75°.

Occurrence: Occurs in clays from an oil well, 20 miles west of Green River, Wyoming: also in clay from an oil well in Uintah County, Utah.

Comments: Shortite is an exceedingly rare, not overly attractive mineral. Cut gems are among the rarest of all faceted stones. The material is a carbonate and is therefore fragile and soft.

Pyroelectric.

Name: After Maxwell N. Short, professor of mineralogy at the University of Arizona.

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