{{Short description|Nickel arsenide mineral}} {{Infobox mineral | name = Maucherite | boxwidth = | boxbgcolor = | image = Cubanite-Maucherite-Valleriite-199921.jpg | imagesize = 260px | alt = | caption = Cubanite-maucherite-valleriite | category = Arsenide mineral | formula = Ni<sub>11</sub>As<sub>8</sub> | IMAsymbol = Muc<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 = 2.AB.15 | dana = | system = Tetragonal | class = Trapezohedral (422) <br/><small>(same H-M symbol)</small> | symmetry = ''P4''<sub>1</sub>2<sub>1</sub>2, ''P4''<sub>3</sub>2<sub>1</sub>2 | unit cell = | color = grey to reddish silver white | colour = | habit = | twinning = | cleavage = | fracture = | tenacity = | mohs = 4.5–5.5 | luster = | streak = grayish black | diaphaneity = | gravity = 6.9–7.3 | density = | polish = | opticalprop = | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = <ref>[https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Maucherite Mineralienatlas]</ref> }}
'''Maucherite''' is a grey to reddish silver white nickel arsenide mineral. It crystallizes in the tetragonal crystal system. It occurs in hydrothermal veins alongside other nickel arsenide and sulfide minerals. It is metallic and opaque with a hardness of 5 and a specific gravity of 7.83. It is also known as placodine and Temiskamite. The unit cell is of symmetry group ''P4''<sub>1</sub>2<sub>1</sub>2 or ''P4''<sub>3</sub>2<sub>1</sub>2.
It has the chemical formula: Ni<sub>11</sub>As<sub>8</sub> and commonly contains copper, iron, cobalt, antimony, and sulfur as impurities.
It was discovered in 1913 in Eisleben, Germany and was named after Wilhelm Maucher (1879–1930), a German mineral collector.
{{commons category|Maucherite}}
== References == {{Reflist}}
== General references == * {{Cite web |title=Maucherite |url=https://www.mindat.org/min-2599.html |access-date=2026-01-23 |website=www.mindat.org}} * {{Cite book |first=Walter |last=Schumann |series=BLV Bestimmungsbuch |title=Mineralien aus aller Welt |edition=2 |year=1991 |isbn=978-3-405-14003-8 |pages=223}}
Category:Nickel minerals Category:Arsenide minerals Category:Tetragonal minerals Category:Minerals in space group 92 Category:Minerals in space group 96
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