Dims: 2.4 x 1.5 x 1.0" (6.1 x 3.8 x 2.5 cm)
Wt: 3.2 oz. (92 g)
Bulldog Mine, Creede, Mineral County, Colorado, U.S.A.
A small vein of semicrystalline Proustite extends into the metallic sulfide base of this specimen. This vein shows no definite crystal form, but any crystals would not exceed a few millimeters in diameter, so I cannot be sure. The Proustite has a deep red color and a pearly luster, and though it is transparent, it is rather hard to see against the dark gray base. The base rock itself is made up of a variety of sulfides that appear to include pyrite and/or chalcopyrite, tetrahedrite and/or galena, or a combination of any or all of these.