Bluish green microcrystals of the rare Cu sulphate mineral minohite from a locality in Germany (Friedrichssegen Mine, Bad Ems, Rhineland-Palatinate, Germany). Only 5 localities known worldwide! Ex. Erich Laskowski collection (USA). — Photo: David Hospital · CC BY 4.0
Minohlite
Minohlite is an IMA-recognized mineral species in the sulfate class, with the chemical formula (Cu,Zn)₇(SO₄)₂(OH)₁₀·8H₂O.
It crystallizes in the hexagonal crystal system.
Key properties: Mohs hardness 2; specific gravity 3.39; Pale green streak; Pearly to vitreous luster.
IMA symbol Mnh, IMA status: approved, named in 2012.
Found as a secondary mineral in the oxidized zone of a Cu Zn sulfide deposit.
It is found associated with Chamosite, muscovite, smithsonite, serpierite, ramsbeckite, limonite, chalcopyrite.
The name refers to Minoh City, from where the first specimens were collected.