rhomboclase


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rhomboclase

[′räm·bə‚klās]
(mineralogy)
HFe3+(SO4)2·4H2O A colorless mineral composed of hydrous acid ferric sulfate, occurring in rhombic plates.
References in periodicals archive ?
5 cm) Nueva Virginia Cylindrite Obrajes Jarosite, thermonatrite Ocuri Cassiterite, pyrargyrite, stibiconite; see Huayoco, Lipez Huayco Oploca 1 Argyrodite/canfieldite, cassiterite, hocartite Oploca 2 Marcasite on pyrite, stibnite Orco Cuchillo Marcasite Orlandini (mine Cassiterite, pyrite, tourmaline owner's name) Oruro Andorite, arsenopyrite, augelite, barite, boulangerite, bournonite, cassiterite, cerussite, chalcopyrite, chalcostibite, cylindrite, diadochite, diaphorite, franckeite, galena, jamesonite, kesterite, marcasite, metastibnite, miargyrite, natroalunite, orthoclase, plagionite, pyrite, quartz, rhomboclase, semseyite, siderite, sphalerite, stannite, stibnite, teallite, tetrahedrite, tourmaline, valentinite, vivianite, wavellite, (*)(?
In addition, rhomboclase was found as stalactitic clusters; all of these came from abandoned workings in the Alfredo pit of the Rio Tinto mine, Huelva province, Spain.
Slavikite has a sheet sulfate structure akin to that of some other ferric sulfates, such as jarosite, kornelite, and rhomboclase, with magnesium and sodium (or another cation?