Cassiterite (RARE Alaska) Dr. Donald Grybeck Coll.

Item Description

Cassiterite specimens from ANY of the many Alaska localities listed by MINDAT are RARE! I have never seen one for sale. Lustrous euhedral crystals are embedded in one face of the crystalline cassiterite matrix. Rare and excellent material from the Dr. Donald Grybeck Collection, a well-known Alaska geologist and professor. Ex Unversity of Alaska Anchorage Collection. A MUST for the locality or species collector.