Haiweeite

Haiweeite
General
Category Nesosilicate
Formula
(repeating unit)		 Ca[(UO2)2Si5O12(OH)2]·3(H2O)
Strunz classification 9.AK.25
Dana classification 53.3.2.2
Crystal system Orthorhombic
Crystal class Dipyramidal (mmm)
Space group Orthorhombic
H-M symbol: (2/m 2/m 2/m)
Space group: Pbcn

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

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