{{Short description|Mineral}} {{Infobox mineral | name = Catapleiite | boxwidth = | boxbgcolor = | image = Catapleiite-169450.jpg | imagesize = | alt = | caption = Catapleiite.Locality: Poudrette quarry (Demix quarry; Uni-Mix quarry; Desourdy quarry; Carrière Mont Saint-Hilaire), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada | struct image = | struct caption = | struct imagesize = | struct2 image = | struct2 caption = | struct2 imagesize= | SMILES = | Jmol = | category = | formula = {{chem2|Na2ZrSi3O9}}·2{{chem2|H2O}} | IMAsymbol = Ctp | molweight = | strunz = | dana = | system = | class = | symmetry = | unit cell = | color = Colorless, tan, brownish-red, light yellow, dark brown, flesh red, orangish | colour = | habit = | twinning = | cleavage = | fracture = | tenacity = | toughness = | mohs = 5.5–6 | luster = Vitreous, dull | streak = | diaphaneity = | gravity = 2.65–2.9 | density = | polish = | opticalprop = | refractive = | birefringence = | pleochroism = | 2V = | dispersion = | extinction = | length fast/slow = | fluorescence = | absorption = | melt = | Curie temp = | fusibility = | diagnostic = | solubility = | impurities = | alteration = | other = | prop1 = | prop1text = | references = | var1 = | var1text = | var2 = | var2text = | var3 = | var3text = | var4 = | var4text = | var5 = | var5text = | var6 = | var6text = }} '''Catapleiite''' ({{chem2|Na2ZrSi3O9}}·2{{chem2|H2O}}) is a dimorph of gaidonnayite rarely found by itself. Its name derives from the Greek words "κατα" (kata) and "πλειον" (pleion) meaning "with more" as it is mostly accompanied by a number of rare minerals. When pure it is colorless, but it is most often seen as a tan, brownish-red, light yellow, dark brown, flesh red or orangish in color. It is mostly found on Låven Island, Norway. Its hardness on the Mohs scale is around 5.5–6. It has a monoclinic crystal system.<ref>{{Cite web|url=https://www.mindat.org/min-919.html|title=Catapleiite: Mineral information, data and localities.|website=www.mindat.org|access-date=2019-04-03}}</ref><ref>{{Cite web|url=https://www.dakotamatrix.com/mineralpedia/5707/catapleiite|title=Catapleiite mineral information and data|last=Minerals|first=Dakota Matrix|website=www.dakotamatrix.com|language=en|access-date=2019-04-03}}</ref>
==References== {{reflist}}
Category:Monoclinic minerals
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