Dims: 0.8" x 0.8" x 0.7" (2.0 x 1.8 x 1.8 cm)
Wt: 5.5 g
Sirena Mine, Guanajuato, Mexico
I believe that the dozens of warped hexagonal tabular Polybasite crystals on this specimen are rather rich in copper, judging from the fact that some of them are lightly coated with chalcopyrite. All of them have a dark gray color and a slightly dull metallic luster. It is difficult to tell whether or not the specimen is damaged, as the heavy intergrowth of the crystals tends to warp their form. Accompanying the Polybasites and chalcopyrites are patches tiny round, green globules that I think are made of malachite. It is a very pretty specimen, as the thin chalcopyrite coating gives some of the tabular Polybasites a subtle, colorful sparkle. The specimen is affixed inside a domed thimble box.