Schorl

Image

Crystal of schorl (tourmaline) with muscovite, from granite quarry, 10 km south-south-west of Lake Boga, Victoria, Australia. Specimen M 30758, Museums Victoria

© Photo by Frank Coffa, Copyright Museums Victoria / CC BY (Licensed as Attribution 4.0 International)

Properties

Formula NaFeII3Al6(Si6O18)(BO3)3(OH)3(OH)
Abbreviation Srl
Classifications Minerals containing BO3, Tourmaline, Minerals containing OH
Luminescence emitter BO3
IMA Status Approved/renamed (IMA 2007 s.p.)
Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Crystal symmetry Trigonal, Point group 3m, Space group R3m (#160)
Tags Borate , Hydroxide , Mineral, Aluminosilicate

Composition

Element Atoms
Na 1
Si 6
H 4
Fe 3
B 3
O 31
Al 6
Total: 54

Reference

Reference
Lines Spectra Images
Laukamp et al. 2021 3 0 0