Gismondine

Zeolite mineral From Wikipedia, the free encyclopedia

Gismondine

Gismondine is a mineral with the chemical formula CaAl2Si2O8·4(H2O). It is a zeolite or hydrated alumino-silicate. It forms colorless, bipyramidal crystals of orthorhombic symmetry.

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Gismondine
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Gismondine, Campo de Calatrava, Ciudad Real, Spain
General
CategoryTectosilicate minerals, zeolite group
FormulaCaAl2Si2O8·4(H2O)
Dana classification77.1.3.1
Crystal systemMonoclinic
Crystal classPrismatic (2/m)
(same H-M symbol)
Space groupP21/n
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Gismondine was named for Italian mineralogist Carlo Giuseppe Gismondi (1762–1824). It has been found in Iceland, Ireland, and Italy.

References


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