Editing Meteorite (section)

===Fossil meteorites===
"Fossil" meteorites are sometimes discovered by geologists. They represent the highly weathered remains of meteorites that fell to Earth in the remote past and were preserved in sedimentary deposits sufficiently well that they can be recognized through mineralogical and geochemical studies. The Thorsberg [[limestone]] quarry in Sweden has produced an anomalously large number – exceeding one hundred – fossil meteorites from the [[Ordovician]], nearly all of which are highly weathered L-chondrites that still resemble the original meteorite under a [[petrographic microscope]], but which have had their original material almost entirely replaced by terrestrial secondary mineralization. The extraterrestrial provenance was demonstrated in part through isotopic analysis of [[Relict (geology)|relict]] [[spinel]] grains, a mineral that is common in meteorites, is insoluble in water, and is able to persist chemically unchanged in the terrestrial weathering environment. Scientists believe that these meteorites, which have all also been found in Russia and China, all originated from the [[Ordovician meteor event|same source]], a collision that occurred somewhere between Jupiter and Mars.<ref>{{cite web |last1=Heck |first1=Philipp |title=Fossil Meteorites Arrive at The Field Museum |url=https://www.fieldmuseum.org/blog/fossil-meteorites-arrive-field-museum |publisher=Field Museum of Natural History |access-date=4 March 2022 |date=12 November 2014 |archive-date=4 March 2022 |archive-url=https://web.archive.org/web/20220304230320/https://www.fieldmuseum.org/blog/fossil-meteorites-arrive-field-museum |url-status=live }}</ref><ref>{{cite CiteSeerX |last1=Muller |first1=Thomas |title=A rain of L-Chondrites in the Thorsberg quarry at Kinnekulle, southern Sweden |citeseerx=10.1.1.492.9937 }}</ref><ref>{{cite web |title=Fossil Meteorites |url=https://meteorites.fieldmuseum.org/outreach/exhibit/fossil-meteorites |website=meteorites.fieldmuseum.org |publisher=Field Museum |access-date=27 August 2022 |archive-date=27 August 2022 |archive-url=https://web.archive.org/web/20220827145124/https://meteorites.fieldmuseum.org/outreach/exhibit/fossil-meteorites |url-status=live }}</ref><ref>{{cite web |last1=Boehnlein |first1=David |title=The story of the fossil meteorites |url=https://www.astronomy.com/news/2017/11/the-story-of-the-fossil-meteorites |website=Astronomy.com |publisher=Astronomy Magazine |access-date=27 August 2022 |date=29 November 2017 |archive-date=27 August 2022 |archive-url=https://web.archive.org/web/20220827145125/https://www.astronomy.com/news/2017/11/the-story-of-the-fossil-meteorites |url-status=live }}</ref> One of these fossil meteorites, dubbed [[Österplana 065]], appears to represent a distinct type of meteorite that is "extinct" in the sense that it is no longer falling to Earth, the parent body having already been completely depleted from the reservoir of [[near-Earth object]]s.<ref name="New Material">{{cite journal|last1=Schmitz|first1=B.|last2=Yin|first2=Q. -Z|last3=Sanborn|first3=M.E.|last4=Tassinari|first4=M.|last5=Caplan|first5=C.E.|last6=Huss|first6=G.R.|title=A new type of solar-system material recovered from Ordovician marine limestone|journal=Nature Communications|date=14 June 2016|volume=7|page=11851|doi=10.1038/ncomms11851|pmid=27299793|pmc=4911632|bibcode=2016NatCo...711851S}}</ref>