👉 The term "ytterite" refers to a type of mineral that is composed primarily of iron and boron, with minor amounts of copper, nickel, and zinc. It is often found in the earth's crust or in the ore deposits associated with various minerals like quartz, feldspar, and calcite. Ytterite has a reddish-brown color, and it can be used for a variety of purposes such as jewelry, construction materials, and even as an electrical conductor.