Mohrite
Introduction '''Mohrite''', (NH4)2Fe(SO4)2·6 H2O, is a rare ammonium iron(II) sulfate mineral originally found in the geothermal fields of Tuscany, Italy. This Fe-dominant analogue of boussingaultite is sometimes reported from burning coal dumps where it is a product of pyrite oxidation.The mineral crystallizes in the monoclinic crystal system with space group ''P21/a''.
See also * Acid mine drainage, pyrite oxidation* Mohr's salt
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