{{Short description|Oxide mineral}} {{Infobox mineral | name =Dmitryivanovite | category = Oxide mineral | boxwidth = | boxbgcolor = | image = | imagesize = | alt = | caption = | formula = CaAl<sub>2</sub>O<sub>4</sub> | IMAsymbol = Div<ref>{{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}}</ref> | molweight = | strunz = 4.BC.10 | dana = | system = Monoclinic | class = Prismatic (2/m) | symmetry = ''P2''<sub>1</sub>/c | unit cell = a = 7.95, b = 8.62 <br/>c = 10.25 [Å]; β = 93.1°; Z = 12 | color = Colorless | colour = | habit = Phase in CAI of 470 (NWA470) CH3 chondrite as subhedral grains | references = <ref name=webmin>[http://webmineral.com/data/Dmitryivanovite.shtml Webmineral data]</ref><ref name=Mindat>[http://www.mindat.org/min-30909.html Mindat.org]</ref> }}
'''Dmitryivanovite''' is a natural mineral composed of calcium, aluminium and oxygen, with the molecular formula CaAl<sub>2</sub>O<sub>4</sub>. It was reported in 2009<ref name="fgf">{{cite journal |doi = 10.2138/am.2009.3080 |title = Dmitryivanovite: A new high-pressure calcium aluminum oxide from the Northwest Africa 470 CH3 chondrite characterized using electron backscatter diffraction analysis |year = 2009 |last1 = Mikouchi |first1 = T. |last2 = Zolensky |first2 = M. |last3 = Ivanova |first3 = M. |last4 = Tachikawa |first4 = O. |last5 = Komatsu |first5 = M. |last6 = Le |first6 = L. |last7 = Gounelle |first7 = M. |journal = American Mineralogist |volume = 94 |issue = 5–6 |pages = 746–750|bibcode = 2009AmMin..94..746M |s2cid = 55193804 }}</ref> in a calcium-aluminium-rich inclusion in the carbonaceous chondrite meteorite 470 (NWA470) CH3, which landed in North Africa. The mineral name was chosen to<ref>{{cite web | url = http://pubsites.uws.edu.au/ima-cnmnc/CNMNC%20NEWSLETTER%205.pdf | title = New minerals approved by the IMA-CNMNC in September 2010 | access-date = 2011-05-09 | archive-date = 2012-03-20 | archive-url = https://web.archive.org/web/20120320181827/http://pubsites.uws.edu.au/ima-cnmnc/CNMNC%20NEWSLETTER%205.pdf | url-status = dead }}</ref> honor Dmitriy A. Ivanov (1962–1986), a geologist, mineralogist, and petrologist who died on a field expedition.<ref name="fgf"/><ref>{{cite journal | doi = 10.1017/S1431927610056060 | title = Structures of Extraterrestrial Minerals Revealed by EBSD | year = 2010 | last1 = Zolensky | first1 = M | last2 = Mikouchi | first2 = T | journal = Microscopy and Microanalysis | volume = 16 | issue = S2 | pages = 676–677|bibcode = 2010MiMic..16S.676Z | doi-access = free }}</ref><ref>{{cite journal | doi =10.1038/180292a0 | title =Crystal Structure of Calcium Monoaluminate | year =1957 | last1 =Dougill | first1 =Maryon W. | journal =Nature | volume =180 | issue =4580 | pages =292–293|bibcode = 1957Natur.180..292D | s2cid =42936397 }}</ref>
It is the high-pressure CaAl<sub>2</sub>O<sub>4</sub> dimorph of krotite.
==See also== * Glossary of meteoritics * Monocalcium aluminate
==References== {{reflist}}
{{Meteorites}}
Category:Calcium minerals Category:Aluminium minerals Category:Oxide minerals Category:Meteorite minerals Category:Monoclinic minerals Category:Minerals in space group 14