Petalite also known as castorite

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Description

small specimen of natural Petalite, also known as castorite,a lithium aluminium tectosilicate mineral LiAlSi4O10.

Mineral Group  silicate
Composition  LiAlSi4O10
dimension (cm)  3x2x1.5
weight (g)  12
from Wikipedia
Discovered in 1800, by Brazilian naturalist Jose Bonifacio de Andrada e Silva. Type locality: Utö Island, Haninge, Stockholm, Sweden. The name is derived from the Greek word petalon, which means leaf (perfect cleavage).
Economic deposits of petalite are found near Kalgoorlie, Western Australia; Aracuai, Minas Gerais, Brazil; Karibib, Namibia; Manitoba, Canada; and Bikita, Zimbabwe.
The first important economic application was as a raw material for the glass-ceramic cooking ware. It has been used as a raw material for ceramic glazes.

Additional information

Weight 12 g
Dimensions 3 x 2 x 1.5 cm