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Formula: KNa2(Mg2Mn3+2Li)Si8O22(OH)2
Inosilicate (chain silicate), forms a solid solution with eckermannite,
manganese- and lithium- bearing mineral
Crystal System: Monoclinic
Specific gravity: 3.15 calculated
Hardness: 6 to 7
Colour: Dark red to brownish lilac
Environments
Localities
At the type locality, the Wessels mine, Hotazel, Kalahari manganese field, Northern Cape, South Africa,
potassic-mangani-leakeite occurs as bundles of fibres (5-20 µm in diameter), often bent, with a maximum fibre length
less than 200 µm. It forms dark red 'felt' rims around hennomartinite.
Associated minerals include pectolite and
hennomartinite
(Mindat).
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