Stibnite

Stibnite is a mineral composed of antimony sulfide (Sb2S3). It is the most important source of antimony, which is a rare metalloid used in various industries such as electronics, batteries, and flame retardants. Stibnite is typically found in hydrothermal veins and is often associated with other minerals such as quartz, pyrite, and galena.

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Stibnite has a metallic luster and a gray-black color. It has a high density and is very brittle, making it difficult to process. However, due to its high antimony content, stibnite is a valuable commodity with a growing demand in the global market. The largest producers of stibnite are China, Russia, and Bolivia, with smaller deposits found in several other countries including the United States.