Submitted by György Chityil ... on Sat, 01/20/2018 - 01:24 Hierarchy: NounDescription: {{geology}} A black, insoluble, carbonaceous material formed from the metamorphosis of shale oil.Ngram: wurtziliteNgram Text: wurtziliteSource: WiktionaryIssue: 0Wiktionary tag: geologyNgram Count: 1