{{Short description|Mineral}} {{Infobox mineral | name = Krieselite | category = | boxwidth = | boxbgcolor = | image = Krieselite.jpg | imagesize = | caption = Krieselite, from Tsumeb, Namibia | formula = Al<sub>2</sub>GeO<sub>4</sub>(OH)<sub>2</sub> | IMAsymbol = Kes<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 = 230.81 g/mol | strunz = 9.AF.35 | dana = 75.01.03.01 | system = Orthorhombic | class = Dipyramidal (mmm) <br />H-M symbol: (2/m 2/m 2/m) | symmetry = ''Pnma'' | unit cell = | color = Beige to white | habit = Isotypic with topaz | lattice = | twinning = | cleavage = | fracture = | tenacity = | mohs = {{frac|5|1|2}} - {{frac|6|1|2}} | luster = Greasy | refractive = NCalc= 1.81 | opticalprop = Biaxial | birefringence = δ = 0.000 | pleochroism = | streak = White | gravity = | density = 4.069 g/cm3 | melt = | fusibility = | diagnostic = | solubility = | diaphaneity = | other = | references = <ref>{{Cite web|url=http://webmineral.com/data/Krieselite.shtml|title = Krieselite Mineral Data}}</ref><ref>{{Cite web|url=http://www.mindat.org/min-27545.html|title=Krieselite}}</ref><ref>{{Cite web|url=http://athena.unige.ch/bin/minfich.cgi?s=KRIESELITE|title=ATHENA MINERAL: Mineral Data; Pierre Perroud}}</ref> }}
'''Krieselite''' is a newly discovered naturally occurring mineral. Found in the Tsumeb mine in Tsumeb, Namibia at an unknown date and unknown depth, the mineral was first cataloged in 1994. Following the acceptance as a new mineral by the International Mineralogical Association in 2003, the material has been matched to unknown samples from the same mine in Namibia from 1972.<ref>{{cite journal |last1=Schlüter |first1=Jochen |last2=Geisler |first2=Thorsten |last3=Pohl |first3=Dieter |last4=Stephan |first4=Thomas |title=Krieselite, Al2GeO4(F,OH)2: A new mineral from the Tsumeb mine, Namibia, representing the Ge analogue of topaz |journal=Neues Jahrbuch für Mineralogie - Abhandlungen |date=1 March 2010 |volume=187 |issue=1 |pages=33–40 |doi=10.1127/0077-7757/2010/0160}}</ref>
==References==
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Category:Germanium minerals Category:Orthorhombic minerals Category:Minerals in space group 62
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