Garronite-Ca
A fairly rare calcium zeolite known from a few dozen localities, first found in Northern Ireland's Glenariff Valley on the Garron Plateau.
Intro adapted from Wikipedia (CC BY-SA).
Garronite-Ca is an IMA-recognized mineral species in the silicate class, with the chemical formula Ca₃(Al₆Si₁₀O₃₂)·14H₂O.
It crystallizes in the tetragonal crystal system (space group I4_1/a). It is a member of the Gismondine structural group.
IMA symbol Grn-Ca, IMA status: approved, named in 1962.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data and a Wikipedia introduction — a full written entry hasn’t been published yet.
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