Simpsonite

Image

Simpsonite specimen from Alto do Giz pegmatite, Equador, Borborema mineral province, Rio Grande do Norte, Northeast Region, Brazil. Size: 1.3 x 1.2 x 0.8 cm.

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

Properties

Formula Al4Ta3O13(OH)
Abbreviation Spn
Luminescence emitters Mn, Unspecified
IMA Status Grandfathered (pre-IMA), 1938
Search other databases webmineral.com, mindat.org, rruf.info, fluomin.org, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags Mineral, Hydroxide

Composition

Element Atoms
Ta 3
H 1
Al 4
O 14
Total: 22

Reference

Reference Lines Spectra Images
Rogojine et al. 2001 4 0 0