Mordenite
Formula: (Na2,Ca,K2)4(Al8Si40)O96ยท28H2O From Alfredo Petrov: Above: Mordenite, Sotoura, Hatamachi, Shizuoka Prefecture, Japan. Flat lying acicular white sprays. Ex Allan and Elvire Mortimer. Ex I. Sunagawa. Measures 49x37x20mm.
Formula: (Na2,Ca,K2)4(Al8Si40)O96ยท28H2O From Alfredo Petrov: Above: Mordenite, Sotoura, Hatamachi, Shizuoka Prefecture, Japan. Flat lying acicular white sprays. Ex Allan and Elvire Mortimer. Ex I. Sunagawa. Measures 49x37x20mm.