DIRK WIERSMA / SCIENCE PHOTO LIBRARY DIRK WIERSMA / SCIENCE PHOTO LIBRARY
Davidite samples. Davidite (glossy black area at right) is an oxide of rare earth minerals and exists in two forms: davidite-La and davidite-Ce, which contain lanthanum and cerium respectively. It forms in uranium bearing pegmatites and has a non-crystalline, glossy black or faintly brownish appearance. This sample is from Crocker's Well, South Australia, and measures 110 millimetres across.
Model release not required. Property release not available.