This is a fine toenail specimen from a classic Bolivian locality. The mine at Porco is the oldest and most significant Silver mine in Bolivia, and obtaining specimens is next to impossible because miners rarely bring out anything for sale, as the mine is a large commercial production, and virtually everything goes into the crusher. Most everything that evades the crusher is usually taken out of Bolivia by a geologist who has an "in" at the mine, or sometimes some brave miners risk losing their jobs by sneaking out a handful of specimens to raise a little extra money to feed their families. I obtained this piece directly from the miners.