Pyrolusite, Gremmelsback, Black Forest, Germany

Pyrolusite dazzles in many forms, from simple dendrites in sandstone or the "moss" in agates from Montana. It can also form amazing radiating crystal sprays like our example here. The metallic luster of this piece really stands out. Another manganese-bearing mineral, manganite, is likely also present on this specimen but not confirmed. Recently acquired from Edward Loye of the United Kingdom. Mounted on an acrylic base. From Gremmelsback, Triberg, Black Forest, Batten-Wurttemburg, Germany. Dimensions: 4 x 5 x 5.5 cm