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Formula: (Fe2+,Mg,Fe3+)12(PO3OH)(PO4)5(OH,O)6
Anhydrous phosphate containing hydroxyl
Crystal System: Trigonal
Specific gravity: 3.68 measured, 3.60 calculated
Hardness: 4½ to 5
Streak: Light yellow
Colour: Light brown, pale yellow
Environments
At the type locality, Big Fish River, Dawson mining district, Yukon, Canada, sattelyite occurs in phosphatic nodules
in shale, associated with quartz,
pyrite, wolfeite and
marićite
(AM 64.657-658, HOM, Mindat).
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