Staurolite twin (old classic) ex Mullane Coll.

Item Description

A very large and equant, angled staurolite twin from this classic old locality for the material. Most are 1 inch or smaller, this is a relatively large one to be in such symmetric form. It seems to be either partially included by muscovite, or perhaps partially altered to a species of mica, as there are micaceous flecks within the surface. Ex. Mullane Collection.