Heinrichite is a mineral that is relatively rare and not widely known. It is a monoclinic-prismatic mineral, meaning that its crystals have a prism-like shape and are elongated in one direction. The chemical composition of heinrichite includes arsenic, barium, hydrogen, oxygen, and uranium, and it has the chemical formula Ba(UOâ‚‚)â‚‚(AsOâ‚„)â‚‚ · 10Hâ‚‚O. Heinrichite is radioactive … [Read more...] about Exploring Heinrichite: A Rare and Radioactive Mineral with Unique Properties