Howlite [ Ca2SiB5O9(OH)5 ]

Image of Howlite

Material properties

Formula Ca2SiB5O9(OH)5
Abbreviation How
Classification Minerals containing OH
Luminescence emitters Eu, O, Triplet-singlet
IMA Status Grandfathered (pre-IMA), 1868
Search other databases webmineral.com, mindat.org, rruf.info, fluomin.org, mineralienatlas.de, Handbook of Mineralogy, American Mineralogist Crystal Structure Database
Tags Hydroxide , Mineral, Borosilicate

Composition

Element Atoms
Si 1
Ca 2
O 14
H 5
B 5
Total: 27

References for Howlite

Reference
Lines Spectra Images
Gaft and Gorobets 1979; Gaft et al. 1979; 1981 1 0 0
Gaft et al. 1979; 1981 1 0 0
Tarashchan 1978 1 0 0

Specimens of Howlite

Name Owner Materials Image Spectra Techniques