Hisingerite Crystallized plates of reddish-brown, silver metallic-lustre hisingerite crystals
Category Silicate mineral Formula(repeating unit) FeIII 2 Si2 O5 (OH)4 · 2 H2 O IMA symbol Hsg[1] Strunz classification 9.ED.10 Crystal system Monoclinic Unknown space group Unit cell a = 5.4, b = 9.03 c = 14.99 [Å]; β = 98.32°; Z = 4 Color Black, brownish-black Crystal habit Massive, compact; acicular, may be minutely spherical. Cleavage None Fracture Conchoidal Tenacity Brittle Mohs scale hardness 2.5 - 3.0 Luster Vitreous, resinous, greasy Streak Yellowish brown, green Diaphaneity Transparent to translucent Specific gravity 2.43 - 2.67 Optical properties Biaxial (-) Refractive index nα = 1.715 nγ = 1.730 Birefringence δ = 0.015 References [2] [3] [4]
Hisingerite is an iron(III) phyllosilicate mineral with formula FeIII 2 Si2 O5 (OH)4 · 2 H2 O . A black or dark brown, lustrous secondary mineral, it is formed by the weathering or hydrothermal alteration of other iron silicate and sulfide minerals.[2]
It was first described in 1751 by A.F. Cronstedt from Väster Silvberg, Dalarna, Sweden (under the name “kolspeglande järnmalm”), and in 1810 by W. Hisinger from the Gillinge iron mine, Södermanland, Sweden (“svart stenart”, later “gillingit”).[5] In 1828 it was found at an occurrence in Riddarhyttan, Vastmanland, Sweden. It was named after Wilhelm Hisinger (1766–1852), a Swedish chemist.[4]
There are also aluminian hisingerite variety in which one of the iron atoms is replaced by aluminium and chrome-alumina-hisingerite variety in which chromium substitutes for iron.[3]
^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine . 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43 . S2CID 235729616.
^ a b Handbook of Mineralogy
^ a b Mindat.org
^ a b Webmineral
^ Holtstam, Dan (2023-04-04). "Prehistory of an enigmatic mineral: hisingerite". GFF : 1–3. doi:10.1080/11035897.2023.2187079 . ISSN 1103-5897.
Last Update: 2023-08-28T03:17:38Z
Hisingerite is an iron(III) phyllosilicate mineral with formula FeIII2Si2O5(OH)4 · 2 H2O. A black or dark brown, lustrous secondary mineral, it is formed...
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(series of zeolites) Hexaferrum Hiärneite Hibonite Hidalgoite Hilgardite Hisingerite Hodgkinsonite Hoelite Hollandite Holmquistite Homilite Hopeite Hornblende...
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The mineral hisingerite , an iron silicate, with the formula Fe2Si2O5(OH)4·2H2O, is named after Hisinger. There is also Aluminian Hisingerite which is when...
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