A very old ludlamite specimen, from the locality that probably produced the best American ludlamites. This piecce has hundreds of small, very transarent green crystals on a plate of sulfide matrix.
Compared to similar pieces from this locality that I have seen, I think this is quite cheap.... of course, I have the Bolivian examples in the back of my head as I'm pricing this.
It comes with an old collector label, attributing it to a 1960 purchase from a Dave Jordt.