Chemistry:Nezhilovite

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Nezhilovite
Nezilovite-330359.jpg
Nezilovite
General
CategoryMineral
Formula
(repeating unit)
PbZn2(Mn4+,Ti4+)2Fe8O19
Strunz classification4.CC.45
Crystal systemHexagonal
Space groupP63/mmc
Unit cella = 5.849 Å, c = 22.809 Å Z=2
Identification
Colourblack
|re|er}}metallic
Streakdark brown
Diaphaneityopaque
Specific gravity5.69
Optical propertiesUniaxial (-)
Pleochroismno

Nezhilovite is a magnetoplumbite mineral discovered in 1996 by Bermanec et al,[1] who gave it the ideal elemental formula PbZn2(Mn4+, Ti4+)2Fe8O19. It forms black magnetic crystals up to 1mm with a tabular, hexagonal outline.[2] The mineral is optically anisotropic, bireflectant and is paramagnetic.[2] The minerals occurs in a matrix of "pink dolomitic marble from a Precambrian metamorphic complex of gneisses, schists and marbles in the Nezhilovo area" of the Pelagonian massif.[2]

References