Glaucophane

Image

Lustrous, black glaucophane prisms in a gneiss matrix, from the Tiburon Peninsula, Marin County, California, USA. Size: 11.4 x 6.9 x 3.8 cm

© Rob Lavinsky, iRocks.com – CC-BY-SA-3.0

Properties

Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags Hydroxide , Mineral, Aluminosilicate

Composition

Element Atoms
Al 2
H 2
Si 8
Na 2
☐ 1
O 24
Mg 3
Total: 42