Chemistry:Haiweeite

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Haiweeite
Haiweeite-171829.jpg
General
CategoryNesosilicate
Formula
(repeating unit)
Ca[(UO2)2Si5O12(OH)2]·3(H2O)
Strunz classification9.AK.25
Dana classification53.3.2.2
Crystal systemOrthorhombic
Crystal classDipyramidal (mmm)
Space groupOrthorhombic
H-M symbol: (2/m 2/m 2/m)
Space group: Pbcn
Identification
Other characteristicsRadioactive.svg Radioactive

Haiweeite is a mineral of uranium and has the chemical formula: Ca[(UO2)2Si5O12(OH)2]·3(H2O). It is a secondary mineral of uranium, a product of oxidation. It has a greenish yellow color. It has a Mohs hardness of about 3.5 and is fluorescent under UV light.

It was named after the Haiwee Reservoir, Inyo County, California, US, where it was first found.

References

  1. Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine 85 (3): 291–320. doi:10.1180/mgm.2021.43. Bibcode2021MinM...85..291W.