{{Short description|Borosilicate mineral}} {{Infobox mineral | name = Bakerite | boxwidth = | boxbgcolor = | image = Bakerite.jpg | imagesize = 260px | alt = | caption = Bakerite sample | category = Nesosilicate | formula = Ca<sub>4</sub>B<sub>4</sub>(BO<sub>4</sub>)(SiO<sub>4</sub>)<sub>3</sub>(OH)<sub>3</sub>·H<sub>2</sub>O | molweight = | strunz = 9.AJ.20 | system = Monoclinic | class = Prismatic (2/m) <br/><small>(same H-M symbol)</small> | symmetry = ''P''2<sub>1</sub>/c | unit cell = a = 4.85 Å, <br/>b = 7.627 Å, <br/>c = 9.659 Å; β = 90.255°; Z = 1 | color = Colorless, white | colour = | habit = | twinning = | cleavage = | fracture = | tenacity = | mohs = {{frac|4|1|2}} | luster = Vitreous, dull | streak = | diaphaneity = Translucent | gravity = 2.88 | density = | polish = | opticalprop = Biaxial (-) | refractive = n<sub>α</sub> = 1.624 n<sub>β</sub> = 1.635 n<sub>γ</sub> = 1.654 | birefringence = δ = 0.030 | pleochroism = | 2V = Measured: 87° to 88° | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = }}
'''Bakerite''' is the common name given to hydrated calcium boro-silicate hydroxide, a borosilicate mineral (chemical formula Ca<sub>4</sub>B<sub>4</sub>(BO<sub>4</sub>)(SiO<sub>4</sub>)<sub>3</sub>(OH)<sub>3</sub>·(H<sub>2</sub>O)) that occurs in volcanic rocks in the Baker, California area.<ref>{{cite web|url=http://webmineral.com/data/Bakerite.shtml|title=Bakerite mineral data|accessdate=2009-05-08|work=WebMineral.com| archiveurl= https://web.archive.org/web/20090405145926/http://webmineral.com/data/Bakerite.shtml| archivedate= 5 April 2009 | url-status= live}}</ref> Discredited mineral: IMA2016-A.
It was first described in 1903 for an occurrence in the Corkscrew Canyon Mine of the Black Mountains, Furnace Creek District, Death Valley National Park, Inyo County, California, US.<ref name=Mindat>[http://www.mindat.org/min-490.html Mindat.org]</ref> It was named for Richard C. Baker, a director of the Pacific Coast Borax Company.<ref name=HBM>[http://rruff.geo.arizona.edu/doclib/hom/bakerite.pdf Handbook of Mineralogy]</ref><ref>Hildebrand, GH. (1982) Borax Pioneer: Francis Marion Smith. San Diego: Howell-North Books. p. 89. ({{ISBN|0-8310-7148-6}})</ref>
==References== {{reflist}}
Category:Borate minerals Category:Nesosilicates Category:Monoclinic minerals Category:Minerals in space group 14 Category:Borosilicates
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