From Surf Wiki (app.surf) — the open knowledge base
Melanterite
| Melanterite |
|---|
| Melanterite as found in nature |
| Sulfate mineral |
| FeSO4·7H2O |
| Mln |
| 7.CB.35 |
| 29.06.10.01 |
| Monoclinic |
| Prismatic (2/m) (same H-M symbol) |
| P21/c |
| Green, pale green, greenish blue, bluish green, colorless |
| Encrustations and capillary efflorescences; rarely as equant pseudo-octahedral, prismatic or tabular crystals |
| {001} Perfect, {110} Distinct |
| Conchoidal |
| 2 |
| Vitreous |
| White |
| Subtransparent to translucent |
| 1.89 – 1.9 |
| Biaxial (+) |
Melanterite is a mineral form of hydrous iron(II) sulfate: FeSO4·7H2O. It is the iron analogue of the copper sulfate chalcanthite. It alters to siderotil by loss of water. It is a secondary sulfate mineral which forms from the oxidation of primary sulfide minerals such as pyrite and marcasite in the near-surface environment. It often occurs as a post mine encrustation on old underground mine surfaces. It also occurs in coal and lignite seams exposed to humid air and as a rare sublimate phase around volcanic fumaroles. Associated minerals include pisanite, chalcanthite, epsomite, pickeringite, halotrichite and other sulfate minerals.
It was first described in 1850.
- Crystal structure of melanterite
- Cuprian melanterite
Ask Mako anything about Melanterite — get instant answers, deeper analysis, and related topics.
Research with MakoFree with your Surf account
Create a free account to save articles, ask Mako questions, and organize your research.
Sign up freeThis content may have been generated or modified by AI. CloudSurf Software LLC is not responsible for the accuracy, completeness, or reliability of AI-generated content. Always verify important information from primary sources.
Report