huge Cymatolite ps. after Spodumene (RARE) Cook Coll.

Item Description

Cymatolite is a RARE white replacement of Spodumene by a mixture of Muscovite and Albite (MINDAT). It is generally lamellar to parallel fibrous. This is a VERY RARE, HUGE terminated pseudomorph from this extinct New Hampshire pegmatite mine. Dramatic and impressive, the 360-degree lamellar pseudo is slightly bent, adding character. One side has a contact where another crystal once lay, but there is very little damage.This former surface and mica and feldspar mine started in the 1880s and was intermittently active until 1959. Mass is 1887 grams or 4.2 pounds. Ex Bill and Anne Cook Collection. An amazing, rare and important large pseudomorph from the locale.