Black Cloud Mine, Iowa Gulch, Leadville, Lake County, Colorado.
A wonderful old classic Galena with attractive cuboctahedral form. I think it is interesting to see the selectivity of the modifications as they do not occur on every corner of the cube, but actually alternate from corner to corner. It is amazing to think how many Leadville specimens were on the market as recently as 10 years ago (my father literally had thousands of them), and now they are becoming increasingly difficult to obtain. This piece would fit very well into a Leadville suite, a worldwide Galena collection, or any thumbnail collection.
Reference:Gal TN 8072