Here is a neat little "pocket," of gem copper-bearing Adamite crystals within matrix. The matrix is a heavy dark stone streaked with green veins that lead to the cavern of needle like Adamite crystals. I picked this up from Gene Meiran's colleciton (it had no label at the time). The fact that it's from Tsumeb, and that the little cave has such bright, richly colored crystals is enticing. The pocket is 2 x 1.8 cms.