Petalite Castorite Specimen Russian Stone Gemstone Mineral


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This is the polished on the one side pinkish-white petalite specimen. Dimensions: 3.4 x 2.1 x 1″ (8.6 x 5.3 x 2.6cm). Weight – 3.6oz (103 grams). Origin: Russia, Transbaikalia.

Some information about petalite:

Petalite, also known as castorite, is a lithium aluminium phyllosilicate mineral LiAlSi4O10, crystallizing in the monoclinic system. Petalite is a member of the feldspathoid group. It occurs as colorless, grey, yellow, yellow grey, to white tabular crystals and columnar masses. Occurs in lithium-bearing pegmatites with spodumene, lepidolite, and tourmaline.

Discovered in 1800, by Brazilian naturalist and statesman Jose Bonifacio de Andrada e Silva. Type locality: Utö Island, Haninge, Stockholm, Sweden. The name derived from the Greek word petalon, which means leaf (perfect cleavage).

The first important economic application for petalite was as a raw material for the glass-ceramic cooking ware CorningWare. It used as a raw material for ceramic glazes.

Additional information

Weight 103 g