This is a very rich specimen with several shallow vugs into which beautiful, transparent crystals of thomsenolite to 8 mm grow. The front view, for my taste, is shown in the large image. However the back side is also interesting, and has more crystals, in which the top halves are infused with iron staining, giving them an unusual umber coloration. Old specimen from the late 1800s or early 1900s, from the Freiberg State Mining Museum. (TYPE LOCALITY)