Avicennite

{{Infobox mineral

| name = Avicennite

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| formula = Tl₂O₃

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| strunz = 4.CB.10

| dana = 04.03.08.01

| system = Cubic

| class = Diploidal (m{{overline|3}})
H-M symbol: (2/m {{overline|3}})

| symmetry = Ia{{overline|3}}

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| color = Grayish black with brownish black tint

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| mohs = 2{{Cite web|url=http://webmineral.com/data/Avicennite.shtml#.XAWcM3WYVhE|title = Avicennite Mineral Data}}

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| density = 8.9[http://www.mindat.org/min-437.html Mindat - Avicennite]

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Avicennite (thallium(III) oxide) is an oxide mineral. It was discovered around the Dzhuzumli village, Samarqand, Uzbekistan.[http://www.mindat.org/min-437.html Mindat - Avicennite] It is named after Avicenna, a Persian doctor and polymath.{{cite book |editor-first1=John W. |editor-last1=Anthony |editor-first2=Richard A. |editor-last2=Bideaux |editor-first3=Kenneth W. |editor-last3=Bladh |editor-first4=Monte C. |editor-last4=Nichols |title=Handbook of Mineralogy |publisher=Mineralogical Society of America |location=Chantilly, VA, USA |url=http://www.handbookofmineralogy.org/pdfs/avicennite.pdf |access-date=13 March 2022 |chapter=Avicennite}}