Cervantite

{{Short description|Antimony oxide mineral}} {{infobox mineral | name = Cervantite | boxwidth = | boxbgcolor = | image = Cervantite-109568.jpg | imagesize = 260px | alt = | caption = Microscopic cervantite crystals from Slovakia (3 mm field of view) | category = Oxide mineral | formula = Sb³⁺Sb⁵⁺O₄ | IMAsymbol=Cvn<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.DE.30 | dana = | system = Orthorhombic | class = Pyramidal (mm2) <br/><small>(same H-M symbol)</small> | symmetry = ''Pbn2''₁ | unit cell = a = 5.43&nbsp;Å, b = 4.81&nbsp;Å, <br/>c = 11.76&nbsp;Å; Z&nbsp;=&nbsp;4 | color = Yellow to nearly white | colour = | habit = Microscopic acicular crystals; massive | twinning = | cleavage = Excellent on {001}, distinct on {100} | fracture = Conchoidal | tenacity = | mohs = 4–5 | luster = Greasy, pearly, earthy | streak = Pale yellow to white | diaphaneity = Semitransparent | gravity = 6.5 | density = | polish = | opticalprop = Biaxial | refractive = n_α = 2.000 n_γ = 2.100 | birefringence = δ = 0.100 | pleochroism = | 2V = | dispersion = relatively weak | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | references = <ref>[https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Cervantite Mineralienatlas]</ref><ref name=HBM>[http://rruff.geo.arizona.edu/doclib/hom/cervantite.pdf Handbook of Mineralogy]</ref><ref name=Mindat>[http://www.mindat.org/min-936.html Mindat.org]</ref><ref name=Webmin>[http://www.webmineral.com/data/Cervantite.shtml Webmineral data]</ref> }} '''Cervantite''', also formerly known as ''antimony ochre''<ref name="Dana">''James Dwight Dana A. M., Brush G. J.'' A system of mineralogy : Descriptive mineralogy, comprising the most recent discoveries. — New York : J. Wiley & Sons, 1884.</ref>{{rp|188}} — is an antimony oxide mineral with formula Sb³⁺Sb⁵⁺O₄ (antimony tetroxide).

It was first described in 1850 for an occurrence in Cervantes, Galicia, Spain, and named for the locality.<ref name=Mindat/> The mineral was questioned and disapproved, but re-approved and verified in 1962 based on material from the Zajaca-Stolice district, Brasina, Serbia.<ref name=HBM/> It occurs as a secondary alteration product of antimony bearing minerals, mainly stibnite.<ref name=HBM/> [[File:Valentinite-Cervantite-Stibnite-213068.jpg|thumb|upright|left|Cervantite and valentinite replacing stibnite from the Xikuangshan Mine of Hunan Province, China (size: 16.1 × 5.0 × 3.0 cm)]]

==References== {{Reflist}}

Category:Antimony minerals Category:Oxide minerals Category:Orthorhombic minerals Category:Minerals in space group 33 Category:Minerals described in 1850 {{Oxide-mineral-stub}}