👉 Bismuthiferous is a term used in the field of mineralogy and geology to describe a type of mineral that contains both elements with metallic properties, such as gold or silver. The specific chemical composition and physical properties of these minerals can vary depending on their source, but they are generally characterized by their high melting point, hardness, and ability to conduct electricity. Bismuthiferous minerals are often found in igneous rocks, such as granite, schist, and gneiss