Allabogdanite

{{Short description|Phosphide mineral}}

{{infobox mineral

| name = Allabogdanite

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| category = Phosphide mineral

| formula = {{chem2|(Fe,Ni)2P}}

|IMAsymbol=Abg{{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 = 1.BD.15

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| system = Orthorhombic

| class = Dipyramidal (mmm)
H-M symbol: (2/m 2/m 2/m)

| symmetry = Pnma

| unit cell = a = 5.748, b = 3.548
c = 6.661 [Å]; Z = 4

| color = Light straw-yellow

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| habit = Minute exolution laminae in plessite

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| tenacity = Brittle

| mohs = 5–6

| luster = Metallic

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| diaphaneity = Opaque

| gravity = 7.11

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| references = [http://www.mindat.org/min-11008.html Mindat][http://www.webmineral.com/data/Allabogdanite.shtml Webmineral data]{{cite journal | doi = 10.2138/am-2021-7621 | title = Discovery of terrestrial allabogdanite (Fe,Ni)₂P, and the effect of Ni and Mo substitution on the barringerite-allabogdanite high-pressure transition | year = 2021 | last1 = Britvin | first1 = Sergey N. | last2 = Vereshchagin | first2 = Oleg S. | last3 = Shilovskikh | first3 = Vladimir V. | last4 = Krzhizhanovskaya | first4 = Maria G. | last5 = Gorelova | first5 = Liudmila A. | last6 = Vlasenko | first6 = Natalia S. | last7 = Pakhomova | first7 = Anna S. | last8 = Zaitsev | first8 = Anatoly N. | last9 = Zolotarev | first9 = Andrey A. | last10 = Bykov | first10 = Maxim | last11 = Lozhkin | first11 = Maksim S. | last12 = Nestola | first12 = Fabrizio | journal = American Mineralogist | volume = 106 | issue = 6 | pages = 944–952 | bibcode = 2021AmMin.106..944B | s2cid = 226434207 | url = https://bib-pubdb1.desy.de/record/449035 }}

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Allabogdanite is a very rare phosphide mineral with the chemical formula {{chem2|(Fe,Ni)2P}}, found in 1994 in a meteorite.{{cite journal | doi = 10.2138/am-2002-8-924| title = Allabogdanite, (Fe,Ni)₂P, a new mineral from the Onello meteorite: The occurrence and crystal structure| year = 2002| last1 = Britvin| first1 = Sergey N.| last2 = Rudashevsky| first2 = Nikolay S.| last3 = Krivovichev| first3 = Sergey V.| last4 = Burns| first4 = Peter C.| last5 = Polekhovsky| first5 = Yury S.| journal = American Mineralogist| volume = 87| issue = 8–9| pages = 1245–1249| bibcode = 2002AmMin..87.1245B| s2cid = 99564642}} It was described for an occurrence in the Onello meteorite in the Onello River basin, Sakha Republic; Yakutia, Russia; associated with

taenite, schreibersite, kamacite, graphite and awaruite. It was named for Russian geologist Alla Bogdanova.

In a June 2021 study, scientists reported the discovery of terrestrial allabogdanite in a sedimentary formation. It is located in the Negev desert of Israel, just southwest of the Dead Sea.