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Formula: Pb2(Fe3+,Mn2+,Mg)11O19
Multiple oxide, manganese-bearing mineral
Crystal System: Trigonal
Specific gravity: 6.07 measured, 6.59 calculated
Hardness: 5
Streak: Red
Colour: Black
Solubility: Easily soluble in hydrochloric acid with evolution of Cl2 and residue of lead chloride
(Dana)
Environments:
Plumboferrite occurs in bands in metamorphic carbonate rock in lead-bearing iron - manganese orebodies, associated
with
hematite, magnesioferrite -
jacobsite - magnetite solid solutions,
lindqvistite, calcite,
andradite, phlogopite,
hedyphane, svabite,
hematophanite, native copper and
cuprite
(AM80.1065).
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