Argentite is a mineral composed primarily of silver sulfide (Ag2S). It typically appears as a dark gray to black, metallic-looking substance and is often found in hydrothermal veins. Argentite is an important ore of silver, making it valuable for mining and industrial applications. This mineral is known for its high silver content, which can reach up to 87.1% by weight. Argentite can be identified by its distinctive properties, including its softness and high density. It is often associated with other minerals such as galena and sphalerite in silver-rich deposits.