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tar sand
envir. πισούχος άμμος
industr. πισσούχος άμμος
énergie;industr. ασφαλτούχος άμμος
tar sand A sandstone in which hydrocarbons have been trapped; the lighter compounds evaporate, leaving a residue of asphalt in the rock pores
envir. πισούχος άμμος