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Formula: Pb[Mn4+2Fe3+7AlZn2]O19
Oxide, magnetoplumbite group,
manganese-bearing mineral
Crystal System: Hexagonal
Specific gravity: 5.69 calculated
Hardness: 4 to 5
Streak: Dark brown or nearly black
Colour: Black
Magnetism: Magnetic
Environments
Localities
At the type locality, Kalugeri Hill, Babuna Valley, Jakupica Mountains, Nežilovo, Veles Municipality, North Macedonia,
nežilovite occurs in pink dolomitic
marble from a metamorphic complex of
gneiss, schist and
marble. It is associated with
plagioclase, chlorite,
phlogopite, cymrite,
talc, piemontite,
baryte, hedyphane,
braunite, gahnite,
franklinite and hematite.
The crystals are about 0.2 to 1 mm in size. They are thin tabular and have subordinate hexagonal prism faces. The
simple habit resembles that of hematite, but nežilovite has a dark
brown or nearly black streak and is magnetic
(CM 34.1287-1297).
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