Prehnite

Image

Specimen of prehnite, from Goboboseb Mountain, Erongo Region, Namibia. Specimen M 53300, Museums Victoria

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

Properties

Formula Ca2Al(Si3Al)O10(OH)2
Abbreviation Prh
Classification Minerals containing OH
Luminescence emitters M2OH, Mn, M[n]OH
Spectra Reflectance (1)
IMA Status Grandfathered (pre-IMA), 1788
Search other databases webmineral.com, mindat.org, rruf.info, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Crystal symmetry Orthorhombic, Point group mm2
Tags Hydroxide , Mineral, Aluminosilicate

Composition

Element Atoms
O 12
Al 2
Si 3
H 2
Ca 2
Total: 21

References

Reference
Lines Spectra Images
Laukamp et al. 2021 6 0 0
CSIRO Reflectance (2025) 0 1 0
Tarashchan 1978 1 0 0