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
Colors Colorless to pale yellow.
Crystallography Orthorhombic. Crystals wedge-shaped, to maximum size of 155 mm.
Refractive Index 1.531-1.570
Luster Vitreous.
Hardness 3
Fracture Conchoidal
Specific Gravity 2.60
Birefringence 0.039
Cleavage Distinct 1 direction
Stone Sizes Very small, less than 1 carat.
Luminescence Pinkish orange to orange-brown in SW (Green River, Wyoming).
Luminescence Present Yes
Luminescence Type Fluorescent, UV-Short
Transparency Transparent.
Absorption Spectrum Not diagnostic.
Formula

Na2Ca2(CO3)3

Optics

= 1.531; β = 1.555; γ = 1.570. Biaxial (+), 2V = 75°.

Optic Sign Biaxial +

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.