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Formula: Mn2+(S4+O3).3H2O
Sulphite, paramorph of
gravegliaite,
manganese-bearing mineral
Crystal System: Monoclinic
Specific gravity: 2.48 measured, 2.467 calculated
Hardness: 2½ to 3
Streak: White
Colour: Yellowish in transmitted light
Luminescence:
Solubility: Insoluble in water, weakly soluble in hydrochloric acid
Environments
Mikenewite is a new mineral, approved in 2022 and to date (August 2023) reported only from the type locality.
Localities
At the type locality, San Judas Chimney, Ojuela Mine, Mapimí, Mapimí Municipality, Durango, Mexico, mikenewite
occurs as spheres of yellowish, transparent, vitreous platy crystals. Associated minerals include
goethite, cryptomelane,
adamite and lotharmeyerite
(MM 87.534-541).
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