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  1. Said of rocks containing amygdules and of the structure of such rocks; e.g., certain basaltic lava sheets on Keweenaw Point, Lake Superior, which have amygdules filled with native copper, and are important sources of the metal. Syn: amygdaloid; amygdule. AGI
  2. Almond-shaped. Zern
    Source: Dictionary of Mining, Mineral, and Related Terms

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