Title: Lazurite

CAS Registry Number: 1302-83-6

Additional Names: Lapis lazuli; lasurite

Literature 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.

Density: d 2.4

Use: In manuf of vases, ornamental furniture, mosaics; in paints, jewelry.