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Kalinite
| Field | Value | |
|---|---|---|
| name | Kalinite | |
| category | Sulfate minerals | |
| image | Kalinite 1.jpg | |
| caption | Kalinite from the Virgin Valley District, Nevada, USA. Specimen size 5.4 cm | |
| formula | KAl(SO4)2·11H2O | |
| IMAsymbol | Kli | |
| molweight | 456.37 g/mol | |
| strunz | 7.CC.15 | |
| dana | 29.5.4.2 | |
| system | Monoclinic | |
| class | Prismatic (2/m) | |
| (same H-M symbol) | ||
| symmetry | *C2/c* | |
| unit cell | a = 19.92(16), b = 9.27(3) | |
| c = 8.304(13) Å | ||
| β = 98.79(19)°; Z = 4 | ||
| color | White to pale blue | |
| habit | Fibrous | |
| fracture | Conchoidal | |
| mohs | 2 to 2.5 | |
| luster | Vitreous | |
| refractive | nα = 1.429 to 1.430, nβ = 1.452, nγ = 1.456 to 1.458 | |
| opticalprop | Biaxial (−) | |
| 2V | 52° (measured), 82° (calculated) | |
| birefringence | None | |
| streak | White | |
| gravity | 1.75 (observed) 2.0 (calculated) | |
| solubility | Soluble in water | |
| diaphaneity | Transparent | |
| other | Not fluorescent, barely detectable radioactivity | references = |
(same H-M symbol) c = 8.304(13) Å β = 98.79(19)°; Z = 4
Kalinite is a mineral composed of hydrated potassium aluminium sulfate (a type of alum). It is a fibrous monoclinic alum, distinct from isometric potassium alum, named in 1868. Its name comes from kalium (derived from Arabic: القَلْيَه al-qalyah "plant ashes", which is the Latin name for potassium, hence its chemical symbol, "K".
A proposal to remove recognition of kalinite as a mineral species was submitted to the International Mineralogical Association; Many older samples, however, have been found to be potassium alum.
Environment
Kalinite is a rare secondary mineral observed in the oxidized zone of mineral deposits, as efflorescence on alum slates, in caves, and as a volcanic sublimate. It is associated with jarosite, KFe3+3(SO4)2(OH)6, and cuprian melanterite (pisanite), (Fe2+,Cu2+)SO4·7H2O, at Quetena, Chile.
References
References
- Warr, L.N.. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine.
- Gaines et al (1997) Dana’s New Mineralogy, Wiley
- [http://www.webmineral.com/data/Kalinite.shtml Kalinite on Webmin]
- [http://www.mindat.org/min-2137.html Kalinite on Mindat]
- American Mineralogist (1923) 8:15
- "IMA Mineral List with Database of Mineral Properties".
- [http://www.handbookofmineralogy.org/pdfs/kalinite.pdf Kalinite data in the Handbook of Mineralogy]
- American Mineralogist (1927) 12:14
- American Mineralogist (1938) 23:721
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