Nomenclature
CAS number: 1302-83-6
Lapis lazuli; lasurite.
Description and references
Composition: (Na,Ca)4(AlSiO4)3(SO4,S,Cl), E. S. Dana, A System of Mineralogy (John Wiley, New York,
6th ed., 1901) pp 432-433; C. S. Hurlbut, Jr., Dana's Manual of Mineralogy (John Wiley, New York, 17th
ed., 1959) p 503.
Properties
Blue, blue-violet or greenish-blue, translucent,
cubic or dodecahedral crystals. d 2.4. Dec by HCl with pptn of SiO2 and evolution
of H2S.Use
In manuf of vases, ornamental furniture, mosaics;
in paints, jewelry.