Howlite

Image

A nodule of howlite, from the Wentworth area, Hants County, Nova Scotia, Canada

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

Properties

Formula Ca2SiB5O9(OH)5
Abbreviation How
Luminescence emitters Eu, O
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

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