Chamosite: Chlorite ps. after Almandine Garnet (old classic!)

Item Description

Classic and excellent, old-time pseudomorph from one of the extinct iron mines of the Upper Peninsula of Michigan - the Michigamme Mine. Greenish-black Chamosite, the ferroan variety of the Chlorite Group, has pseudomorphed a large for the locale, sharp, moderately lustrous, textbook dodecahedral Almandine Garnet crystal. One corner still has a bit of remaining orange-red almandine showing, as a bonus. Complete all-around and pristine. These "black diamonds" were frustrating waste products during the mining days, as they frequently damaged the rock-crushing equipment. A classic, large, old-time pseudomorph with unusually fine form. AND this one is magnetic, as many aren't - these are very rare in this size and quality, and semeingly unique!