Gaylussite n. : A yellowish white, translucent mineral, consisting of the carbonates of lime and soda, with water.

Example:


Taxonomy
Gaylussite, free encyclopedia, Na2Ca, carbonate mineral, CO3, grey, vitreous, sodium, calcium carbonate, mineral, search, Tabular prismatic crystals, Conchoidal, brittle, hardness, Optical properties, Biaxial, characteristics.

Defination from the web:
Gaylussite is a carbonate mineral, a hydrated sodium calcium carbonate, formula Na2Ca(CO3)2·5H2O. ... a b c http://rruff.geo.arizona.edu/doclib/hom/gaylussite.pdf Handbook of Mineralogy ^ a b http://www.mindat.org/min-1662.html Mindat ...