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clarain

A coal lithotype characterized macroscopically by semibright, silky luster and sheetlike, irregular fracture. It is distinguished from vitrain by containing fine intercalations of a duller lithotype, durain. Its characteristic microlithotype is clarite. Compare: clarite; fusain; vitrain.

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Penulis

  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 poin
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