Rozenite
Rozenite | ||
---|---|---|
Specific gravity 2.29 | | |
Optical properties | Biaxial (−) | |
Refractive index | nα = 1.526 – 1.528 nβ = 1.536 – 1.537 nγ = 1.541 – 1.545 | |
Solubility | Water soluble | |
References | [2][3][4] |
Rozenite is a hydrous iron sulfate mineral, Fe2+SO4·4(H2O).
It occurs as a secondary mineral, formed under low humidity at less than 21 °C (70 °F) as an alteration of copper-free melanterite, which is a post mine alteration product of pyrite or marcasite. It also occurs in lacustrine sediments and coal seams. Associated minerals include melanterite, epsomite, jarosite, gypsum, sulfur, pyrite, marcasite and limonite.[2]
It was first described in 1960 for an occurrence on Ornak Mountain, Western
The thermal expansion of rozenite was studied from −254 °C (−425.2 °F) to 17 °C (63 °F) using neutron diffraction. Rozenite exhibits negative linear thermal expansion, meaning that it expands in one direction upon cooling.[5]
References
- ^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85: 291–320.
- ^ a b c Rozenite in the Handbook of Mineralogy
- ^ a b Rozenite data on Mindat.org
- ^ Webmineral data for rozenite
- ^ "Scientific article rozenite" (PDF).