Alvanite

{{Short description|Mineral}}

{{Infobox mineral

| name = Alvanite

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| image = Alvanite.jpg

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| caption = Alvanite found at its type locality

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| formula = {{chem2|(Zn,Ni)Al4(V^{5+}O3)2(OH)12*2H2}}O

| IMAsymbol = Alv

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| color = Pale bluish green to bluish black

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| fracture = Micaceous

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| mohs = 3-3.5

| luster = Vitreous, Pearly

| streak = White

| diaphaneity = Translucent

| gravity = 2.49

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Alvanite (IMA symbol: Alv{{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}}) is a zinc nickel aluminium vanadate mineral with the chemical formula {{chem2|(Zn,Ni)Al4(V^{5+}O3)2(OH)12*2H2}}O. It was originally discovered in the Karatau Mountains.[https://mindat.org/min-165.html Alvanite] {{Webarchive|url=https://web.archive.org/web/20190406003618/https://www.mindat.org/min-165.html |date=2019-04-06 }} on mindat.org