# Kalinite

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> Source: https://en.wikipedia.org/wiki/Kalinite
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{{distinguish|kaolinite}}

{{Infobox mineral
| name = Kalinite
| category = [Sulfate minerals](/source/Sulfate_minerals)
| boxwidth =
| boxbgcolor = 
| image = Kalinite 1.jpg
| imagesize   = 
| caption = Kalinite from the [Virgin Valley](/source/Virgin_Valley) District, Nevada, USA.  Specimen size 5.4 cm 
| formula = KAl(SO<sub>4</sub>)<sub>2</sub>·11H<sub>2</sub>O
| IMAsymbol   = Kli<ref>{{Cite journal|last=Warr|first=L.N.|date=2021|title=IMA–CNMNC approved mineral symbols|journal=Mineralogical Magazine|volume=85|issue=3|pages=291–320|doi=10.1180/mgm.2021.43|bibcode=2021MinM...85..291W|s2cid=235729616|doi-access=free}}</ref>
| molweight = 456.37 g/mol
| strunz = 7.CC.15
| dana = 29.5.4.2
| system = [Monoclinic](/source/Monoclinic)
| class = Prismatic (2/m) <br/><small>(same [H-M symbol](/source/H-M_symbol))</small>
| symmetry  = ''C2/c''
| unit cell = a = 19.92(16), b = 9.27(3) <br/>c = 8.304(13)&nbsp;Å <br/>β = 98.79(19)°; Z&nbsp;=&nbsp;4
| color = White to pale blue  
| habit = Fibrous
| lattice = 
| twinning = 
| cleavage = 
| fracture = Conchoidal
| tenacity = 
| mohs = 2 to 2.5 
| luster = Vitreous
| refractive = n<sub>α</sub> = 1.429 to 1.430, n<sub>β</sub> = 1.452, n<sub>γ</sub> = 1.456 to 1.458
| opticalprop = Biaxial (−) 
| 2V = 52° (measured), 82° (calculated)
| birefringence = None
| pleochroism = 
| streak = White
| gravity = 1.75 (observed) 2.0 (calculated)
| density = 
| melt = 
| fusibility = 
| diagnostic = 
| solubility = Soluble in water
| diaphaneity = Transparent
| other = Not fluorescent, barely detectable radioactivity| references = <ref name = Dana>Gaines et al (1997) Dana’s New Mineralogy, Wiley</ref><ref name = HOM/><ref name = Webmin>[http://www.webmineral.com/data/Kalinite.shtml Kalinite on Webmin]</ref><ref name = Mindat>[http://www.mindat.org/min-2137.html Kalinite on Mindat]</ref>}}

'''Kalinite''' is a [mineral](/source/mineral) composed of [hydrate](/source/hydrate)d [potassium aluminium sulfate](/source/potassium_aluminium_sulfate) (a type of [alum](/source/alum)).  It is a fibrous [monoclinic](/source/monoclinic) alum, distinct from [isometric](/source/isometric_crystal_system) potassium alum,<ref name = AM8>American Mineralogist (1923) 8:15</ref> named in 1868. Its name comes from ''kalium'' (derived from [Arabic](/source/Arabic_language): القَلْيَه al-qalyah "plant ashes", which is the [Latin](/source/Latin) name for [potassium](/source/potassium), hence its chemical symbol, "K".  

A proposal to remove recognition of kalinite as a mineral species was submitted to the [International Mineralogical Association](/source/International_Mineralogical_Association);<ref name = Mindat/> however, kalinite is still on the list of approved minerals.<ref name = IMA>{{Cite web|url=http://rruff.info/ima|title=IMA Mineral List with Database of Mineral Properties}}</ref>  Many older samples, however, have been found to be [potassium alum](/source/potassium_alum).<ref name = HOM>[http://www.handbookofmineralogy.org/pdfs/kalinite.pdf Kalinite data in the Handbook of Mineralogy]</ref>

== Environment ==
Kalinite is a rare secondary mineral observed in the [oxidized zone](/source/oxidized_zone) of mineral deposits, as [efflorescence](/source/efflorescence) on alum slates, in caves, and as a [volcanic sublimate](/source/volcanic_sublimate).<ref name = AM12>American Mineralogist (1927) 12:14</ref>  It is associated with [jarosite](/source/jarosite), KFe<sup>3+</sup><sub>3</sub>(SO<sub>4</sub>)<sub>2</sub>(OH)<sub>6</sub>, and cuprian [melanterite](/source/melanterite) (pisanite), (Fe<sup>2+</sup>,Cu<sup>2+</sup>)SO<sub>4</sub>·7H<sub>2</sub>O, at Quetena, [Chile](/source/Chile).<ref name = AM23>American Mineralogist (1938) 23:721</ref>

== References ==
{{Reflist}}

Category:Aluminium minerals
Category:Potassium minerals
Category:Sulfate minerals
Category:Monoclinic minerals
Category:Minerals in space group 15

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Adapted from the Wikipedia article [Kalinite](https://en.wikipedia.org/wiki/Kalinite) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Kalinite?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.