svabite

{{Use dmy dates|date=September 2021}}

{{Short description|Chemical compound}}{{Expand German}}{{Infobox mineral

| image = Svabite, Caryopilite-762212.jpg

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| name = Svabite

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| formula = {{chem2|Ca5(AsO4)3(F,OH)}}

| IMAsymbol = Sva{{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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| color = Colorless yellowish white, gray, grayish green, colorless to pale lilac in transmitted light

| habit = As stout prismatic hexagonal crystals, often modified by several bipyramids, up to 5 mm; also massive

| twinning =

| cleavage = Indistinct on {1010}

| fracture = Irregular/uneven

| tenacity = Brittle

| mohs = 4.0 – 5.0

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| density = 3.50 – 3.80 (g/cm³)

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| refractive = 1.698 – 1.706 Uniaxial (−)

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| other = Soluble in dilute acids

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Svabite is an arsenate mineral.{{Cite web|title=Svabite {{!}} mineral|url=https://www.britannica.com/science/svabite|access-date=3 September 2021|website=Encyclopedia Britannica|language=en}} The mineral is rare and is also a member of the apatite group.{{Cite web|date=25 March 2017|title=Svabite|url=https://nationalgemlab.in/svabite/|access-date=5 September 2021|website=National Gem Lab|language=en-US}} It is isomorphous with apatite and mimetite.

It got its name in 1891 by Hjalmar Sjögren after Anton von Swab.{{Cite web|title=Svabite|url=https://www.mindat.org/min-3836.html|access-date=5 September 2021|website=www.mindat.org}}