4.2" Botryoidal Prehnite - Mali

This is a 4.2" wide association of translucent, botryoidal green prehnite, collected from the Kayes Region of Mali, Africa.

Prehnite is a calcium aluminum silicate with the chemical composition Ca2Al(AlSi3O10)(OH)2. It generally occurs as volcanic cavity infillings, and typically is a shade between yellow and green, however colorless and blue specimens are not unheard of.

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SPECIES

Prehnite

LOCATION

Kayes Region, Mali, Africa

SIZE

4.2 x 2.5"

4.2" Botryoidal Prehnite - Mali

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