WALPURGITE
Specimen wal-1

Dims: 1.31x1.01x0.62" (3.34x2.56x1.58cm)

Wt: 0.77oz (21.7g)

Schmiedestolle, Wittichen, Schwarzwald, Germany

I don't remember buying this specimen, and I likely would not have, as it is a "micro" specimen with tiny paper arrows indicating where on the specimen to focus your microscope. However, it was on my invoice, and I did pay for it, so here it is. The host rock (looks like a brown calcite) has many small cavities, and a significant amount of a green mineral on its surface (I believe that it is torbornite). Hidden in a few protected cavities are tufts of greenish-yellow walpurgite. These cannot be seen, let alone examined, without at least a high power loupe. There are several areas with a yellow-orange dusting, which may be more walpurgite.