Dims: 5.0x2.3x2.3" (12.7x5.8x5.9 cm)
Wt: 18.3 oz. (518g)
Hulcani Mine, Ancash, Peru
The top of this specimen is covered with frankeite and galena crystals, along with a scattering of other metal sulfides which I have not identified. The frankeite crystals are acicular, and organized in clusters that have random orientations. Under a loupe, the frankeite crystals have a bright metallic luster and are irridescent. The host rock includes veins of pyrite, there are some tiny clusters of quartz, and in a pocket on the bottom are still more unidentified metal sulfides.