We came across this specimen in material from the Alex Franz collection, formerly belonging Hans-Peter Schroder and dated 1972.
The piece is a flat backed sandstone matrix covered in pyromorphite but also small octahedral crystals of galena replaced by limonite.
The pyromorphite also forming an outer layer to some of the octahedrons.
The locality although recorded is a little obscure: it is long abandoned, described as "ancient" and not many specimens seem to have surfaced on the Net.
This specimen is very typical and a good example of the paragenesis.
