# Apjohnite

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Apjohnite
> Markdown URL: https://mediated.wiki/source/Apjohnite.md
> Source: https://en.wikipedia.org/wiki/Apjohnite
> Source revision: 1324309228
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

{{Infobox mineral
| name        = Apjohnite
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| image       = Ilesite & Apjohnite.jpg
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| caption     = Apjohnite (white) found with [ilesite](/source/ilesite)
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| formula     = Mn{{sup|2+}}Al{{sub|2}}(SO{{sub|4}}){{sub|4}}·22H{{sub|2}}O
| IMAsymbol   = API
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| mohs        = 1.5-2
| luster      = Silky
| streak      = White
| diaphaneity = Transparent, Translucent
| gravity     = 1.78 - 1.81
| density     = 1.78 - 1.81 g/cm3 (Measured)<br/>1.836 g/cm3 (Calculated)
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'''Apjohnite''' ([IMA](/source/International_Mineralogical_Association) [symbol](/source/List_of_mineral_symbols): Apj<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>) is a [manganese](/source/manganese) [aluminium](/source/aluminium) [sulfate mineral](/source/sulfate_minerals) with the chemical formula Mn{{sup|2+}}Al{{sub|2}}(SO{{sub|4}}){{sub|4}}·22H{{sub|2}}O. It was named after [Trinity College Dublin](/source/Trinity_College_Dublin) professor [James Apjohn](/source/James_Apjohn). Its [type locality](/source/type_locality_(geology)) is [Maputo Province](/source/Maputo_Province), [Mozambique](/source/Mozambique).<ref>[https://mindat.org/min-281.html Apjohnite] {{Webarchive|url=https://web.archive.org/web/20190326150903/https://www.mindat.org/min-281.html |date=2019-03-26 }} on [mindat.org](/source/mindat.org)</ref>

== References ==

{{Reflist}}

== External links ==

* [http://webmineral.com/data/Apjohnite.shtml Apjohnite data sheet on Webmineral]
* [http://handbookofmineralogy.com/pdfs/apjohnite.pdf Apjohnite] on the ''Handbook of Mineralogy''

{{mineral-stub}}

Category:Manganese(II) minerals
Category:Aluminium minerals
Category:Sulfate minerals

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