Each month, WMMI features a new rock or mineral. This month we feature these sulfur crystals in a Vuggy Matrix. Native sulfur is a bright yellow, soft, odorous mineral. This piece of sulfur has perfectly terminated crystals in brilliant yellow. Today sulfur is mined to produce sulfuric acid which is a component for fertilizers. Sulfur is also a component in the production of steel, cement, rubber, explosives and other products. See this and many other rocks and minerals at your non-profit, local museum.