Formula:
NaCa2Fe2+2(Fe3+,Mn2+,Fe2+)4(PO4)6.2H2O
Hydrated phosphate, wicksite group,
manganese-bearing mineral
Crystal System: Orthorhombic
Specific gravity: 3.54 measured, 3.58 calculated
Hardness: 4½ to 5
Streak: Green
Colour: Dark blue, dark green, black
Environments
At the type locality, Big Fish River, Dawson mining district, Yukon, Canada, Wicksite occurs in nodules in
shale beds in an iron formation. Associated minerals include
wolfeite, satterlyite,
marićite, ludlamite,
vivianite, pyrite and
quartz
(AM 67.1077, Dana, HOM).
Back to Minerals