Description | Wurtzite is the not so common cousin of the much more common mineral, sphalerite. Sphalerite and wurtzite are both zinc iron sulfides with the same formula, (Zn,Fe)S. However, what makes them different minerals is that they have different structures. The two are called polymorphs (meaning many shapes) and actually share the chemistry with a third, even rarer mineral, called matraite. |