Delhayelite

Image

Outstanding grey crystals of the rare mineral delhayelite from Rasvumtchorr, Khibiny, Kola, Russian Federation

© Photo by David Hospital (on wikimedia.org), CC-BY-SA 4.0

Properties

Formula K7Na3Ca5Al2Si14O38F4Cl2
Abbreviation Dhy
Luminescence emitters Mn, O, S2
IMA Status Approved (IMA 1962 s.p.)
Search other databases webmineral.com, mindat.org, rruf.info, fluomin.org, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags Hydrated , Mineral, Aluminosilicate

Composition

Element Atoms
Al 2
F 4
O 38
Cl 2
Ca 5
Na 3
K 7
Si 14
Total: 75

References

Reference
Lines Spectra Images
Gaft et al. 1982 8 0 0
Gorobets and Rogojine 2002 1 0 0