IMA mineral species

Gismondine-Ca

Ca₂(Si₄Al₄)O₁₆·8H₂O

Zeolite mineral.

Gismondine-Ca specimen
Gismondina Calatrava.jpg · Wikimedia Commons (see file page for author & license)

Properties

Chemical formulaCa₂(Si₄Al₄)O₁₆·8H₂O
ElementsCa, Si, Al, O, H
Crystal systemMonoclinic
Mohs hardness—
Density—
Streak—
Color—
IMA symbolGis-Ca
Nickel–Strunz class9.GC.05

“—” means no reliable value in Wikidata yet. Check Mindat for full data.