Phillipsite silicate framework, view along [101]-axis Data from: Gatta G D., Cappelletti P., Rotiroti N., Slebodnick C., Rinaldi R. (2009): New insights into th — Photo: Bubenik · CC BY-SA 3.0
Phillipsite-Ca
Also known as: Phillipsite.
Phillipsite-Ca is an IMA-recognized mineral species in the silicate class, with the chemical formula Ca₃(Si₁₀Al₆)O₃₂·12H₂O.
It crystallizes in the monoclinic crystal system (space group P2_1/m). It is a member of the Harmotome structural group.
Key properties: Mohs hardness 3.5–4.5; typically white or colorless or yellow or red; white streak; vitreous luster.
IMA symbol Php-Ca, IMA status: approved, named in 1997.
Collections: Collector Favorites.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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