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Prehnite on Epidote, Kayes Region, Mali

Regular price $55.00 USD
Regular price Sale price $55.00 USD
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Prehnite: botryoidal green Prehnite sitting on dark-green Epidote, collected from the Kayes Region of Mali, Africa. You are receiving the exact piece shown.

Approximate Measurements:
2.92" x 1.52" x 1.83"
largest botryoidal: 0.99"
Smallest Botryoidal: 0.44"
Weight: 110g

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.

Epidote is a green, silicate mineral that is commonly found in regionally metamorphosed rocks. It often forms lustrous, elongated and interconnected crystals that are highly coveted by collectors. While nearly all epidote is green it may take on many different shades and tones from yellowish to deep green.