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.
FOR SALE
$35
DETAILS
SPECIES
Prehnite
LOCATION
Kayes Region, Mali, Africa
SIZE
4.2 x 2.5"
CATEGORY
ITEM
#219508