{{Short description|Mineral}} {{Infobox mineral | name = Nadorite | category = Halide mineral | boxwidth = | boxbgcolor = | image = Nadorite-160239.jpg | imagesize = | caption = | formula = PbSbO<sub>2</sub>Cl | IMAsymbol = Nad<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 = 3.DC.30 | system = Orthorhombic | class = Dipyramidal (mmm) <br/>H-M Symbol: (2/m 2/m 2/m) | symmetry = ''Bmmb'' | color = Brown, brownish-yellow, yellow | habit = | twinning = On {101}, nearly perpendicular (91°45'), common | cleavage = On {010}, perfect | fracture = Uneven | tenacity = | mohs = {{frac|3|1|2}} - 4 | luster = Adamantine, Resinous | polish = | refractive = n<sub>α</sub> = 2.300 n<sub>β</sub> = 2.340 - 2.350 n<sub>γ</sub> = 2.360 - 2.400 | opticalprop = | birefringence = δ = 0.060 - 0.100 | dispersion = Strong | pleochroism = | fluorescence= | absorption = | streak = White, yellow to yellowish white | gravity = | density = 7 | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = Translucent | alteration = To cerussite | other = | references = <ref name=Mindat /><ref>[http://www.webmineral.com/data/Nadorite.shtml Nadorite data at Webmineral]</ref> }} '''Nadorite''' is a mineral with the chemical formula PbSbO<sub>2</sub>Cl.<ref name=Mindat>{{cite web|url=http://www.mindat.org/min-2827.html|title=Nadorite|publisher=Mindat.org|accessdate=2008-04-16}}</ref> It crystallizes in the orthorhombic crystal system and is brown, brownish-yellow or yellow in color, with a white or yellowish-white streak.<ref name=Mindat />

Nadorite is named after Djebel Nador in Hammam N'Bail, Algeria, where it was first identified in 1870.<ref name=Mindat />

==Geologic occurrence== Djebel Nador and Djebel Debbar (both in the Guelma Province of Algeria) are its co-type localities. Also found as an alteration product of jamesonite in Cornwall, England.<ref name=Mindat />

==References== {{reflist}}

==Bibliography== *<small>Palache, P.; Berman H.; Frondel, C. (1960). "''Dana's System of Mineralogy, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. (Seventh Edition)"'' John Wiley and Sons, Inc., New York, pp.&nbsp;1039-1041.</small>

Category:Halide minerals Category:Lead minerals Category:Antimonate minerals Category:Orthorhombic minerals Category:Minerals in space group 63

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