Iron-pyrite (Pyrite, or "Fool's Gold") is defined as FeS2, or iron disulfide. Through inorganic chemistry (assigning oxidation states to each atom), pyrite ...

Under normal conditions, pyrite would form cubes or pyritohedrons. The crystal habit of a mineral describes its visible external shape. It can apply to an ...

It is distinguishable from native gold by its hardness, brittleness and crystal form. Natural gold tends to be anhedral (irregularly shaped), whereas pyrite comes ...