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About: Chaoite     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Substance100019613, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: Thingdul:ChemicalObjectchemical substanceMineralmineralyago:WikicatCarbonFormsyago:WikicatMeteoriteMineralsyago:WikicatMineralsyago:WikicatNativeElementMineralsyago:Abstraction100002137yago:Form106290637yago:LanguageUnit106284225yago:Material114580897yago:Matter100020827yago:Mineral114662574yago:Part113809207yago:PhysicalEntity100001930yago:Relation100031921yago:Word106286395yago:Substance100019613 New Facet based on Instances of this Class

Chaoite, or white carbon, is a mineral described as an allotrope of carbon whose existence is disputed. It was discovered in shock-fused graphite gneiss from the Ries crater in Bavaria. It has been described as slightly harder than graphite, with a reflection colour of grey to white. From its electron diffraction pattern, the mineral has been considered to have a carbyne structure, the linear acetylenic carbon allotrope of carbon. A later report has called this identification, and the very existence of carbyne phases, into question, arguing that the new reflections in the diffraction pattern are due to clay impurities.