DIRK WIERSMA / SCIENCE PHOTO LIBRARY DIRK WIERSMA / SCIENCE PHOTO LIBRARY
Lollingite crystals (silvery white). This is an iron arsenide mineral (FeAs2) that usually also contains significant cobalt, nickel, or sulphur. This sample is from Lolling, Carinthia, Austria, and measure 85 millimetres across.
Model release not required. Property release not required.