rhombohedrally
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rhombohedrally — rhom·bo·he·dral·ly … English syllables
Zussmanite — K(Fe++,Mg,Mn)13 [AlSi17O42] (OH)14 is a hydrated iron rich silicate which was found in 1960 by Stuart Olof Agrell, in the Laytonville quarry, Mendocino County, California. Zussmanite is named in honor of Jack Zussman, Head of the University of… … Wikipedia