- Llallagua, Rafael Bustillo, Potosi, Bolivia
- Thumbnail, 2.5 x 2.3 x 2.1 cm
- Ex. J. Rukin Jelks
Unusually good cluster of SHARP Siderite rhombs from the world-class tin mines at Llallagua. The crystals are a deep brown, and the silky luster gives the crystals a rich appearance. The presentation side is excellent, and it is contacted on the back. This is one of the most aesthetic, well-formed Siderites I have seen from this district in Bolivia.