Sentence Examples


  • His chief work was in microscopic petrology, to the study of which he was attracted by the investigations of Dr H.
  • IrXivOos, a tile), in petrology, a dark grey or dark brown crypto-crystalline substance which has an almost vitreous lustre, and when pure appears structureless to the unaided eye.
  • AA'ecv, to split), in petrology, metamorphic rocks which have a fissile character.
 
 

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