A slightly divergent 'book' of diamond-shaped muscovite crystals with a lustrous, 7 mm cassiterite group embedded among the terminations. Cassiterite is uncommon at the Cryo-Genie Mine; of the 111 mineral specimen photos for this locality hosted at Mindat, only 6 include cassiterite. This interesting specimen is in superb condition; the muscovite has not been bashed. Previous dealer label with a $150 price.