A very elegant example of rhodochrosite having replaced serandite, a type of pseudomorph which can occur only at this one locality in the world. Most such specimens are, frankly, pretty horrible - they tend to be jumbly and incomplete, and somewhat unaesthetic overall, from this pocket. The fidelity of the replacement at the terminations is often poor. This is, for the size, one of the best I have seen in that it has some aesthetics and is not as corrroded as most seem to be. The association with bright polylithionite sets off the terminations nicely!