Polarizing Microscopes Educational Resources

The mineral group called Galena Group is comprised of several minerals having similar isometric structure and related chemistry that can be seen clearly exhibited when the mineral is evaluated with the aid of petrographic polarizing light microscopes. The name of this mineral group is derived from the mineral name of its most common member, the [...]

The chemical composition of the mineral Galena is indicated by the formula PbS, a Lead Sulfide. This Galena belongs to the Sulfides mineral class. Mineral Galena is the most common member of the Galena Group of Minerals. Mineral Galena is considered as the most major ore of lead and silver. It is most commonly found [...]

The chemical composition of the mineral Altaite is indicated by the formula PbTe, a Lead Telluride. This Altaite belongs to the Sulfides mineral class. Altaite mineral belongs to the Galena group for they appear to have the same properties and are known to share the same structure. This mineral Altaite is a rare mineral and [...]

The chemical composition of the mineral Clausthalite is indicated by the formula PbSe, a Lead Selenide. This Clausthalite belongs to the Sulfides mineral class. Mineral specimen Clausthalite is also a member of the Galena Group of minerals. Clausthalite shares basically the same structure and display very similar properties as mineral galena. However, Clausthalite minerals can [...]