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Mineralogical Society of America Handbook of Mineralogy Revised 8/4/2021 Gmelinite-Ca Ca2(Si8Al4)O24·11H2O
Gmelinite, hydrated sodium aluminosilicate mineral in the zeolite family [(Na2,Ca)Al2Si4O12·6H2O]. Its crystal structure and chemical composition are similar to those of chabazite (q.v.), with which it is commonly
The name gmelinite has been raised to series status by Coombs et al. (1997), encompassing three new species names: gmelinite-Na for the most common composition with the type example from Montecchio Maggiore; gmelinite-Ca for a few Ca-dominant specimens also from Montecchio Maggiore; and gmelinite-K with the type composition represented by ...
In 1997, gmelinite was split into Gmelinite-Ca, Gmelinite-Na and Gmelinite-K. Gmelinite was originally described from Montecchio Maggiore, Vicenza Province, Veneto, Italy and Little Deerpark Quarry, Glenarm, Co. Antrim, Northern Ireland, UK.
The meaning of GMELINITE is a mineral (Na2,Ca)Al2Si4O12.6H2O consisting of a colorless or light-colored zeolite isomorphous with chabazite (hardness 4.5, specific gravity 2—2.2).
10 photos of Gmelinite-K associated with Chabazite-Ca (Ca,K 2,Na 2) 2 [Al 2 Si 4 O 12] 2 · 12H 2 O: 5 photos of Gmelinite-K associated with Ussingite: Na 2 AlSi 3 O 8 OH: 4 photos of Gmelinite-K associated with Natrolite: Na 2 Al 2 Si 3 O 10 · 2H 2 O: 4 photos of Gmelinite-K associated with Thomsonite-Ca: NaCa 2 [Al 5 Si 5 O 20] · 6H 2 O: 3 ...
The name gmelinite has been raised to series status by Coombs et al. (1997), encompassing three new species names: gmelinite-Na for the most common composition with the type example from Montecchio Maggiore; gmelinite-Ca for a few Ca-dominant specimens also from Montecchio Maggiore; and gmelinite-K with the type composition represented by ...