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Formula: [Mg(H2O)6]Na(H2O)2Al3(PO4)2F6
Phosphate
Crystal system: Monoclinic
Specific gravity: 2.27 calculated
Environments
Chinnerite is a new mineral, approved in 2023 and to date (August 2025) reported only from the
type locality.
Localities
At the type locality, the Penrice marble quarry, Penrice, Barossa Council, South Australia, chinnerite occurs
as aggregates of platy crystals, growing from the surface of sub-millimetre rods of
angastonite. The chinnerite is considered to have formed by
dehydration of penriceite at temperatures of 40°C or higher.
Associated Minerals include angastonite,
elliottite, goethite,
minyulite, muscovite,
penriceite and
tomsquarryite
(Mindat).
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