Okenite

Ca10Si18O46.18H2O

These samples of okenite are displayed in the Smithsonian Museum of Natural History. Okenite is a silicate mineral of calcium with the composition Ca10Si18O46.18H2O. The sample above is about 25 cm across and is from Bombay, Maharashtra, India.

This sample of okenite is about 35 cm across and is from Bombay, Maharashtra, India. It is described as okenite with gyrolite.

This okenite specimen is about 25 cm long and is from Poona, Maharashtra, India. It is described as okenite with prehnite and quartz.

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Mindat: Okenite

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