Hematite is an iron oxide found in sedimentary, metamorphic, and igneous rocks. It is commonly black and dark gray but often displays streaks of red. This specimen is gray and red with radiating crystals. It was found near Lake Superior and fluoresces under ultraviolet light.
Science Tuesday: Amazing Explosions (July 2016) Science Tuesdays is an ongoing educational experience, offering science programming based on changing themes each month. Science Tuesdays take place throughout the day on Tuesdays at the Museum and include a variety of activities and interactive displays.