Formula: (Ca,Na2,K2)[Al2Si4O12]·6H2O
From Alfredo Petrov:
LEVYNE-Ca (kai-rebi-fusseki)
- Fukuoka: In amygdaloidal basalt at Keya.
- Fukushima: A rather unusual environment for levyne is the wollastonite-rich skarn xenoliths in andesite in a quarry at Tadano. Here it occurs as hexagonal tabular xls to 2mm, associated with chabazite. (qv wadalite)
- Niigata: Associated with epistilbite, laumontite and scolecite in andesite at Kuroiwa.
- Shimane: Transparent tabular hexagonal crystals, to 8mm wide, 1mm thick, grown on cowlesite crystals or mammillary thomsonite aggregates, in dark green “chlorite”-lined (celadonite?) vugs to 4cm wide in altered Pliocene trachybasalt at Kuniga, Oki-nishino-shima. Contains 0.81% SrO.
Above: Colourless hexagonal crystals of lévyne-Ca from Kuniga, Nishinoshima, Oki Islands, Okinoshima, Oki District, Shimane Prefecture, Japan. Width of view 3mm. Elsewhere on the specimen lévyne-Ca occurs as yellow iron-stained crystals, white fibrous thomsonite, and tiny analcime crystals. Ex Peter Hall. Ex Hiromi Yamasaki.
