# Masuyite

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> Markdown URL: https://mediated.wiki/source/Masuyite.md
> Source: https://en.wikipedia.org/wiki/Masuyite
> Source revision: 1353001682
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

{{Infobox mineral
| name        = Masuyite
| boxwidth    = 
| boxbgcolor  = 
| image       = Masuyite-Uraninite-mun08rad-05b.jpg
| imagesize   = 
| alt         = 
| caption     = Orange Masuyite coating crystals of cubic [uraninite](/source/uraninite) (to about 1 cm). [Shinkolobwe mine](/source/Shinkolobwe_mine),  the [type locality](/source/type_locality_(geology)), [Democratic Republic of the Congo](/source/Democratic_Republic_of_the_Congo).
| category    = [Oxide minerals](/source/Oxide_minerals)
| formula     = Pb[(UO<sub>2</sub>)<sub>3</sub>O<sub>3</sub>(OH)<sub>2</sub>]·3H<sub>2</sub>O
| IMAsymbol   = Msy<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   = 
| strunz      = 4.GB.35
| dana        = 
| system      = [Monoclinic](/source/Monoclinic)
| class       = Domatic (m) <br/><small>(same [H-M symbol](/source/H-M_symbol))</small>
| symmetry    = ''Pn''
| unit cell   = a = 13.98&nbsp;Å, b = 12.11&nbsp;Å, <br/>c = 14.2&nbsp;Å; Z&nbsp;=&nbsp;2
| color       = 
| colour      = 
| habit       = 
| twinning    = 
| cleavage    = 
| fracture    = 
| tenacity    = 
| mohs        = 
| luster      = 
| streak      = 
| diaphaneity = 
| gravity     = 
| density     = 
| polish      = 
| opticalprop = Biaxial (-)
| refractive  = n<sub>α</sub> = 1.785 n<sub>β</sub> = 1.895 n<sub>γ</sub> = 1.915
| birefringence = δ = 0.130
| pleochroism = 
| 2V          = Measured: 50°, calculated: 44°
| dispersion  = extreme
| extinction  = 
| length fast/slow =
| fluorescence = 
| absorption  = 
| melt        = 
| fusibility  = 
| diagnostic  = 
| solubility  = 
| impurities  = 
| alteration  = 
| other       = 25px [Radioactive](/source/Radioactive)
| prop1       = 
| prop1text   = 
| references  = Masuyite on Mineralienatlas<ref>[https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Masuyite Mineralienatlas]</ref>
}}

'''Masuyite''' is a [uranium](/source/uranium)/[lead](/source/lead) [oxide](/source/oxide) mineral with formula Pb[(UO<sub>2</sub>)<sub>3</sub>O<sub>3</sub>(OH)<sub>2</sub>]·3H<sub>2</sub>O.<ref name=Webmineral>[http://www.webmineral.com/data/Masuyite.shtml Webmineral]</ref>

Masuyite was first described in 1947 for an occurrence in [Katanga](/source/Katanga_Province) and named to honor Belgian geologist [Gustave Masuy](/source/Gustave_Masuy) (1905–1945).<ref name=handbook>[http://rruff.geo.arizona.edu/doclib/hom/masuyite.pdf Handbook of Mineralogy]</ref>

==See also==
{{stack|{{Portal|Earth sciences}}}}
* [Classification of minerals](/source/Classification_of_minerals_(disambiguation))
* [List of minerals](/source/List_of_minerals)

==References==
{{Reflist}}

{{Commonscat}}
Category:Uranium(VI) minerals
Category:Lead minerals
Category:Oxide minerals
Category:Monoclinic minerals
Category:Minerals in space group 7
Category:Minerals described in 1947

{{oxide-mineral-stub}}

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