Kremersite

{{More footnotes|date=January 2020}} {{Infobox mineral | name = Kremersite | boxwidth = | boxbgcolor = | image = Kremersite.jpg | imagesize = | alt = | caption = Kremersite found in Russia | struct image = | struct caption = | struct imagesize = | struct2 image = | struct2 caption = | struct2 imagesize= | SMILES = | Jmol = | category = | formula = (NH₄,K)₂FeCl₅·H₂O | IMAsymbol = Km | molweight = | strunz = | dana = | system = | class = | symmetry = | unit cell = | color = Ruby-red to red, brownish red | colour = | habit = | twinning = | cleavage = | fracture = | tenacity = | toughness = | mohs = | luster = Vitreous | streak = | diaphaneity = Translucent | gravity = 2.175 | density = | polish = | opticalprop = | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | Curie temp = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = | var1 = | var1text = | var2 = | var2text = | var3 = | var3text = | var4 = | var4text = | var5 = | var5text = | var6 = | var6text = }} '''Kremersite''' is a rare mineral which is a hydrated multiple chloride of iron, ammonium and potassium with the formula: (NH₄,K)₂FeCl₅·H₂O. Kremersite is a brown-red to orange mineral that crystallizes in the orthorhombic system. It is a water-soluble mineral that is found around volcanic fumaroles. Occurs at Vesuvius, Italy and Mount Etna, Sicily. It was discovered in 1853 and named for the German chemist, Peter Kremers (born 1827).

==References== *[http://www.mindat.org/min-2273.html Mindat] *[http://webmineral.com/data/Kremersite.shtml Webmineral]

Category:Potassium minerals Category:Halide minerals Category:Iron(III) minerals Category:Orthorhombic minerals Category:Minerals in space group 62

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