shortite
shortite from Green River in Wyoming in United States
Detailed sheet
shortite
Discovered in 1939, it honors the name of American mineralogist Maxwell Naylor Short (1889-1952).
CHEMICAL CHARACTERISTICS
Na2Ca2[CO3]3
calcium and sodium carbonate
PHYSICAL CHARACTERISTICS
Main color
white
Other colors
colourless, yellow
Color of streak
white
Luster
vitreous
Hardness
3.0 to 0.0
Density
2.60 to 0.00
Cleavage
good
Fracture
conchoidal
OPTICAL PROPERTIES
Transparency
translucent, transparent
Refractive index
1.530 - 1.570
Double refraction
0.040
strong biaxial (-)
visible double refraction
Yes
Dispersion
+
Pleochroism
absent
Number of colors
1
Fluorescence
weak
yellowish
CRYSTALS PROPERTIES
flattened pyramidal
crystals system
orthorhombic
OTHER INFORMATIONS
APPROACHING GEMS
Exploited
sites
It is found in Tajikistan, Russia (Kola Peninsula), Canada (Mt. St. Hilaire) and Utah in the United States.
use in jewelry
This is only a little colored collection stone and rarely transparent.
Daily care
and precautions
It decomposes in water.
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