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Formula: Mn(SO4).H2O
Hydrated sulphate of manganese,
kieserite group
Crystal system: Monoclinic
Specific gravity: 3.15 measured, 2.946 calculated
Hardness: 1½
Colour: Grey-white, rose-red, pale red
Solubility: Soluble in water
Environments
Localities
At the Johkoku mine, Kaminokuni, Hiyama District, Hiyama Subprefecture, Hokkaidō Prefecture, Japan, szmikite
is a rare post-mining incrustation, associated with jokokuite
(HOM).
Szmikite from the Johkoku Mine - Image
At the type locality, Baia Sprie, Maramureș County, Romania, szmikite has been found as a post-mining
efflorescence of amorphous stalactitic form, with botryoidal surfaces
(Mindat).
At the Blue Lizard Mine, Red Canyon Mining District, San Juan County, Utah, USA, szmikite, that has replaced
jokokuite, is associated with blocky pale pink crystals of
manganoblödite up to 60 microns on edge
(MM 77.3.367–383).
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