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harmotome

[hahr-muh-tohm] /ˈhɑr məˌtoʊm/
noun
1.
a zeolite mineral related to stilbite, occurring in twinned crystals.
Origin
1795-1805
1795-1805; < French < Greek harmó(s) joint + -tomos -tome
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for harmotome

harmotome

/ˈhɑːməˌtəʊm/
noun
1.
a mineral of the zeolite group consisting of hydrated aluminium barium silicate in the form of monoclinic twinned crystals. Formula: Ba(Al2Si6O16).6H2O
Word Origin
C19: from French, from Greek harmos a joint + tomē a slice, from temnein to cut
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Encyclopedia Article for harmotome

hydrated barium aluminosilicate mineral, (Ba,Na,K)1-2 (Si,Al)8O16 6H2O, in the zeolite family. Harmotome is isostructural with the mineral phillipsite; that is, the three-dimensional structure of the aluminosilicate framework is the same in the two substances. Its glassy, crosslike twinned crystals vary in colour from white to gray, yellow, red, and brown. It is ordinarily found with chabazite in basalts, as in Bodenmais, Germany; Kongsberg, Norway; and western Scotland. For detailed physical properties, see zeolite (table)

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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