Formula: Mg5(SiO4)2F2 nesosilicate (insular SiO4 groups)
Specific gravity: 3.1 to 3.2
Hardness: 6 - 6½
Colour: Yellow, brown, red, rarely green
Solubility: Slightly soluble in hydrochloric acid
Metamorphic environments (typically)
Chondrodite occurs in contact or
regionally metamorphosed dolomitic
dolostone, associated with
It also may be found in serpentinite associated with magnetite, and in skarn associated with wollastonite, forsterite and monticellite.
At Palabora, Limpopo Province, South Africa, chondrodite occurs atypically in carbonatite, associated with calcite, magnetite, clinochlore and less commonly with iowaite (R&M.92.5.437).
At the Tilly Foster mine, Brewster, Putnam county, New York, USA, antigorite pseudomorphs after chondrodite have been found with magnetite on kaolinite (KL p233).
Common impurities: Ti,Al,Mn
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