This dramatic large display specimen features sharp, wet-looking, lustrous crystals to 6 or 7mm, draping over 2 sides of a handsized matrix of solid, massive atacamite (and presumably other coppe rminerals mixed in). The 3-dimensional quality of these crystals, their habit, is quite unlike atacmite found in this region today. To be sure it is what we thought it to be, we had this analyzed for confirmation. It is atacamite, if a most unusual specimen!