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Formula: Ca4Fe2+Sn3(Si2O7)2(Si2O6OH)2
Sorosilicate (Si2O7 groups), kristiansenite group
Crystal System: Triclinic
Specific gravity: 3.775 calculated
Colour: Pale brownish
Environments
Kozłowskiite is a new mineral, approved in 2021 and to date (January 2023) reported only from the type locality.
Localities
At the type locality, the Szklarska Poręba Huta granite quarry, Szklarska Poręba, Karkonosze County, Lower Silesian
Voivodeship, Poland, kozłowskiite was found as a band in the core of a zoned
silesiaite–kristiansenite
crystal from the granitic
pegmatite
(MM 86.3.507-517).
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