Editing Baddeleyite (section)

==Geologic occurrence==

Baddeleyite was first found in [[Sri Lanka]] in 1892. It can be found in numerous terrestrial and extraterrestrial rocks. Some of these terrestrial rocks are [[carbonatite]], [[kimberlite]], alkaline [[syenite]], some rocks of [[Layered intrusion|layered mafic intrusion]]s, [[diabase]] [[Dike (geology)|dikes]], [[gabbro]]id [[Sill (geology)|sills]] and [[anorthosite]].<ref name= Bayanova/>  Some examples of extraterrestrial rocks are [[tektite]]s, [[meteorite]]s and lunar [[basalt]]. Studies have shown that zircon and baddeleyite can be recovered from some anorthositic rocks in [[Proterozoic]] anorthosite complexes.<ref name = Scoates>{{cite journal|author1=Scoates, James |author2=Kevin Chamberlain |name-list-style=amp |title=Baddeleyite (ZrOr) and zircon (ZrSiO) from anorthositic rocks of the Laramie anorthosite complex, Wyoming: Petrologic consequences and U-Pb ages|journal= American Mineralogist|year =1995|volume=80|issue=11–12 |pages=1317–1327|url=http://www.minsocam.org/msa/ammin/toc/Articles_Free/1995/Scoates_p1317-1327_95.pdf|bibcode=1995AmMin..80.1317S|doi=10.2138/am-1995-11-1222|s2cid=46901671 }}</ref>  Places where these Proterozoic anorthosite complexes can be found are: the Laramie Anorthosite Complex in Wyoming, the Nain and Grenville provinces of Canada, the Vico Volcanic Complex in Italy,<ref name=Bellatreccia>{{cite journal|author=Bellatreccia, Fabio|author2=Giancarlo Della Ventura|author3=Gian Carlo Parodi|author4=Terry Williams|name-list-style=amp |doi=10.1007/BF02904453 |url=http://www.lincei.it/pubblicazioni/rendicontiFMN/rol/pdf/S1998-01-02.pdf |title=Baddeleyite from the vico volcanic complex, latium Italy |year=1998 |journal=Rendiconti Lincei |volume=9 |issue=1 |pages=27–33 |bibcode=1998RLSFN...9...27B |s2cid=126680669|url-status=dead |archive-url=https://web.archive.org/web/20071212194406/http://www.lincei.it/pubblicazioni/rendicontiFMN/rol/pdf/S1998-01-02.pdf |archive-date=2007-12-12 }}</ref> and [[Minas Gerais]] and [[Jacupiranga]], [[São Paulo]], [[Brazil]]. Baddeleyite forms in igneous rocks low in silica, it can be found in rocks containing potassium feldspar and plagioclase. It has been observed in [[thin section]] that baddeleyite forms within plagioclase grains. Associated minerals include [[ilmenite]], [[zirkelite]], [[apatite]], [[magnetite]], [[perovskite]], [[fluorite]], [[nepheline]], [[pyrochlore]] and [[allanite]].<ref name=Handbook/>

Because of their refractory nature and stability under diverse conditions, baddeleyite grains, along with [[zircon]], are used for [[Radiometric dating#Uranium-lead dating method|uranium-lead]] [[Radiometric dating|radiometric age]] determinations.
[[File:BaddeleyiteStructure.png|thumb|left|150px|Crystal structure of baddeleyite<ref>{{cite journal|last1=Drabińska|first1=A.|last2=Grodecki|first2=K.|last3=Strupiński|first3=W.|last4=Bożek|first4=R.|last5=Korona|first5=K. P.|last6=Wysmołek|first6=A.|last7=Stępniewski|first7=R.|last8=Baranowski|first8=J. M.|title=Growth kinetics of epitaxial graphene on SiC substrates|journal=Physical Review B|volume=81|pages=245410|year=2010|doi=10.1103/PhysRevB.81.245410|issue=24|bibcode = 2010PhRvB..81x5410D }}</ref>]]