Very rare, sharp and euhedral, mint-green, well-formed crystals of the cuprian variety of adamite from this mine. They range to almost 1 cm in size. This specimen is notable for the rare isolation of the crystals, nicely doisplayed on contrasting matrix of dark gossan. more often, they are clustered in a jumble, and on brown matrix which doesn't highlight the color so nicely. Marty's collection was world-famous for his suite of Mexican minerals but of those he was most proud of and dedicated to building the adamite suite. This is a significant pedigree for a Mexican adamite, but its a quality piece in and of itself, as well.