# Sanbornite

> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/Sanbornite
> Markdown URL: https://mediated.wiki/source/Sanbornite.md
> Source: https://en.wikipedia.org/wiki/Sanbornite
> Source revision: 1331295498
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)

{{Short description|Phyllosilicate mineral}}
{{Infobox mineral
| name        = Sanbornite
| category = [Phyllosilicate](/source/Phyllosilicate) minerals
| boxwidth    = 
| boxbgcolor  = 
| image       = Sanbornite with celsian.jpg
| imagesize   = 
| caption     = Sanbornite (white) with celsian (gray)—Incline, Maricopa County, California
| formula     = Ba(Si<sub>2</sub>O<sub>5</sub>)
| IMAsymbol   = Sabn<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   = 273.50 g/mol
| strunz      = 9.EF.10
| system      = [Orthorhombic](/source/Orthorhombic)
| class       = Dipyramidal (mmm) <br/>[H-M symbol](/source/H-M_symbol): (2/m 2/m 2/m)
| symmetry    = ''Pmcn''
| unit cell   = a = 4.62&nbsp;[Å](/source/%C3%85ngstr%C3%B6m), b = 7.68&nbsp;Å <br/>c = 13.52&nbsp;Å; Z&nbsp;=&nbsp;4
| color       = Colorless, White
| habit       = Platy modulated layers
| twinning    = 
| cleavage    = Perfect
| fracture    = 
| tenacity    = 
| mohs        = 5
| luster      = Vitreous
| polish      = 
| refractive  = ''n<sub>α</sub>'' = 1.597, ''n<sub>β</sub>'' = 1.616, ''n<sub>γ</sub>'' = 1.624
| opticalprop = Biaxial (−)
| birefringence = δ = 0.0270
| dispersion  = Weak
| pleochroism = 
| fluorescence= 
| 2V          = 
| streak      = White
| gravity     = 3.74 
| density     =
| melt        = 
| fusibility  = 
| diagnostic  = 
| solubility  = 
| diaphaneity = Transparent to translucent
| other       = 
| references  = <ref name="mindat">[http://www.mindat.org/min-3518.html Sanbornite: Sanbornite mineral information and data]</ref><ref>[http://webmineral.com/data/Sanbornite.shtml Sanbornite Mineral Data]</ref>
}}

'''Sanbornite''' is a rare [barium](/source/barium) [phyllosilicate](/source/Silicate_minerals) mineral with formula [Ba](/source/barium)[Si](/source/silicon)<sub>2</sub>[O](/source/oxygen)<sub>5</sub>. Sanbornite is a colorless to white to pale green, platey [orthorhombic](/source/orthorhombic) mineral with [Mohs hardness](/source/Mohs_hardness) of 5 and a [specific gravity](/source/specific_gravity) of 3.74.

It was first described from [Incline](/source/Incline%2C_California), [Mariposa County, California](/source/Mariposa_County%2C_California) in 1932<ref>Rogers, A.F. (1932) Sanbornite, a new barium silicate mineral from Mariposa County, California. Amer. Mineral., 17, 161–172</ref> and named for [mineralogist](/source/mineralogist) [Frank B. Sanborn](/source/Frank_B._Sanborn) (1862–1936).

==See also==
*[List of minerals](/source/List_of_minerals)
*[List of minerals named after people](/source/List_of_minerals_named_after_people)

==Footnotes==
{{Reflist}}

==References==
*[http://www.mindat.org/min-3518.html Mindat w/ locations]
*[http://webmineral.com/data/Sanbornite.shtml Webmineral w/ images]
*[https://web.archive.org/web/20050820035312/http://mineral.galleries.com/minerals/silicate/sanborni/sanborni.htm Mineral galleries]

Category:Barium minerals
Category:Phyllosilicates
Category:Orthorhombic minerals
Category:Minerals in space group 62

{{Silicate-mineral-stub}}

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