Rosenbergite


Rosenbergite is a mineral with the chemical formula AlF3·3H2O. It is a trihydrate of aluminium fluoride.

Rosenbergite
General
CategoryMineral
Formula
(repeating unit)
AlF3·3H2O
Crystal systemTetragonal
Crystal class4
Space groupP4/n (no. 85)
Identification
Mohs scale hardness3–3.5

It is colorless. Its crystals are tetragonal to dipyramidal. It is named after Philip E. Rosenberg, a United States geochemist. It is found in the Celtine Mine in Tuscany, Italy and Mount Erebus, Ross Island, Antarctica. It is not radioactive. Rosenbergite is rated 3–3.5 on the Mohs Scale.

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