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  Home  >>  Mineral Encyclopedia  >>  Mineral Photos  >>  Gaylussite-Gaylussite
Gaylussite
Chemical
Formula
 Na2Ca(CO3)2·5H2O
Species
 Carbonates
Crystal
System
 Monoclinic
Mohs
Scale
 2
Specific
Gravity
 1.93-1.99
Color
 Colorless, white, yellow, and grey
Streak
 white
Luster
 Vitreous
Refractive
Index
 n = 1.444 n = 1.516 n = 1.523
Diaphaneity
 Transparent, Translucent
Cleavage
 PerfectOn perfect; rather difficult.
Fracture
 Conchoidal
Crystal Habit：Tabular prismatic crystals also granular
Geological Setting：Soda lakes.
Gaylussite2695
Gaylussite2695
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Gaylussite2690
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