Actinolite with Prehnite

specimen number:
2341310

location:
Imilchil, Midelt, Draa-Tafilalet, Morocco

description:
A neat and attractive specimen for the species, freestanding green acicular crystals of actinolite and groupings to 3.0 x 1.0 x 0.5 cm in size coming off the top of matrix. Prehnite is present on the backside of the matrix as colorless crystal groupings to almost 3.0 cm in size. The entire top of this matrix is covered with nice actinolite. From 2018, the specimen comes with a previous label from the collection of Jan Erik Larsen.

The rugged terrain of the High Atlas region features complex geological formations shaped by ancient tectonic collisions, rifting, and subsequent hydrothermal activity that created diverse mineral pockets. While the surrounding Draa-Tafilalet region has a rich history of large-scale industrial and artisanal mining for base metals, the high-altitude zones near Imilchil and Midelt have gained international renown among collectors for yielding exceptional alpine-type fissure specimens. Local prospectors and artisanal miners harvest these cavities for fine cabinet pieces, uncovering sharply crystallized silicates and accessory minerals including lustrous titanite and translucent green prehnite.

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