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harmotome
harmotome (ˈhɑːməˌtəʊm) n (Minerals) a mineral of the zeolite group consisting of hydrated aluminium barium silicate in the form of monoclinic twinned crystals. Formula: Ba(Al2Si6O16).6H2O[C19: from French, from Greek harmos a joint + tomē a slice, from temnein to cut]harmotome
harmotome[′här·mə‚tōm] (mineralogy) (K,Ba)(Al,Si)2(Si6O16)·6H2O A zeolite mineral with ion-exchange properties that forms cruciform twin crystals. Also known as cross-stone. |