👉 Tungstenite is a mineral that belongs to the group of minerals known as quartz and is one of the most commonly encountered minerals on Earth. It is composed of a mixture of two elements, tungsten (W) and iron (Fe), which are both common in nature. The chemical formula for tungstenite is W4Fe2O6, where W represents wolfram (wolfram), Fe represents iron (Fe). This mineral has the following physical properties: 1. Color: