2.2" Green Prehnite Crystal Cluster - Morocco

This is a specimen of green prehnite found in Morocco. The prehnite crystals formed in seemingly striated patterns, all bunched up next to each other with rectangular, "bowtie" crystal structures.

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.
DETAILS
SPECIES
Prehnite
LOCATION
Imilchil, Midelt Province, Morocco
SIZE
2.2 x 1.4"
CATEGORY
ITEM
#138318