Santite

{{Infobox mineral

| name = Santite

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| image = Santite.jpg

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| caption = Santite crystals

| category = Nesoborates

| formula = KB₅O₈ · 4H₂O

| IMAsymbol = Snt{{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}}

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| strunz = 6.EA.10

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| system = Orthorhombic

| class = Pyramidal (mm2)
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| symmetry = Aba2

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| color = Colourless

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| luster = Vitreous

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| references = {{cite web|url= https://www.mindat.org/min-3527.html|work=mindat.org|title= Santite|accessdate=2021-12-17}}

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Santite (KB₅O₈·4H₂O) is a hydrated borate mineral of potassium found in Tuscany, Italy. It is named for Georgi Santi (1746–1823), a former director of the Museum of Natural History, Italy.