Miargyrite

Miargyrite is a mineral with the chemical formula AgSbS2. It is a member of the pyrargyrite group, which are sulfosalt minerals. Miargyrite crystallizes in the monoclinic crystal system and is typically found as small, prismatic crystals or granular masses. Its color is generally dark gray to black, and it possesses a metallic luster. The mineral is relatively soft, with a Mohs hardness of 2 to 2.5, and has a specific gravity of around 5.3. Miargyrite is a relatively rare mineral and is often found in hydrothermal veins associated with other silver-bearing minerals. It has been found in various locations worldwide, including Germany, Chile, and the United States. It is considered a minor ore of silver.