Difference between revisions of "Coquimbite"
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[[File:Coquimbite2.jpg|thumb|Coquimbite]] | [[File:Coquimbite2.jpg|thumb|Coquimbite]] | ||
== Description == | == Description == | ||
| − | + | [[File:Coquimbite C100x.jpg|thumb|Coquimbite at 100x (visible light left; UV light right)]] | |
A yellowish brown to violet hydrated iron sulfate mineral. Coquimbite was named after the province of Coquimbo in Chile where it was first described in 1841. | A yellowish brown to violet hydrated iron sulfate mineral. Coquimbite was named after the province of Coquimbo in Chile where it was first described in 1841. | ||
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coquimbit; coquimbita | coquimbit; coquimbita | ||
| − | == | + | [[[SliderGallery rightalign| Slide4_coquimbite.PNG~XRF (MFA)|Coquimbite Raman RRUFF R060638.png~Raman (RRUFF)]]] |
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| + | ==Physical and Chemical Properties== | ||
| − | Crystal structure is massive or granular, but may occur in plates or prisms. Fracture = uneven Cleavage = imperfect Luster=vitreous Streak = white | + | * Crystal structure is massive or granular, but may occur in plates or prisms. |
| + | * Fracture = uneven | ||
| + | * Cleavage = imperfect | ||
| + | * Luster = vitreous | ||
| + | * Streak = white | ||
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{| class="wikitable" | {| class="wikitable" | ||
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|- | |- | ||
! scope="row"| Density | ! scope="row"| Density | ||
| − | | 2.0-2.1 | + | | 2.0-2.1 g/ml |
|- | |- | ||
! scope="row"| Molecular Weight | ! scope="row"| Molecular Weight | ||
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|} | |} | ||
| − | == | + | ==Resources and Citations== |
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| − | * | + | * Web Minerals: [http://webmineral.com/data/Coquimbite.shtml Coquimbite] |
| − | * | + | * Mindat at http://www.mindat.org/min-1126.html |
| − | * Website | + | * Website: http://labs.sci.qut.edu.au/minerals/mineral%20general%20descriptions/C/coquimbitepcd.htm |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Latest revision as of 11:04, 6 December 2022
Description
A yellowish brown to violet hydrated iron sulfate mineral. Coquimbite was named after the province of Coquimbo in Chile where it was first described in 1841.
Synonyms and Related Terms
coquimbit; coquimbita
Physical and Chemical Properties
- Crystal structure is massive or granular, but may occur in plates or prisms.
- Fracture = uneven
- Cleavage = imperfect
- Luster = vitreous
- Streak = white
| Composition | Fe2(SO4)3.9H2O |
|---|---|
| Mohs Hardness | 2.5 |
| Density | 2.0-2.1 g/ml |
| Molecular Weight | 562.02 |
| Refractive Index | 1.55; 1.557 |
Resources and Citations
- Web Minerals: Coquimbite
- Mindat at http://www.mindat.org/min-1126.html