Shortite Value, Price, and Jewelry Information

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

Shortite

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.