pyroxenserien

The pyroxene series is a group of industrially and geologically important silicate minerals. They are characterized by their chain silicate structure, where silicon-oxygen tetrahedra are linked together in single chains. This structural arrangement gives them their distinctive properties. Pyroxenes have a general chemical formula of XYZ2O6, where X, Y, and Z represent different cations that can substitute for one another within the mineral structure.

Common elements found in pyroxenes include magnesium, iron, calcium, sodium, aluminum, and titanium. The specific combination of these elements determines the particular mineral within the pyroxene series. Notable members include enstatite (MgSiO3), ferrosilite (FeSiO3), diopside (CaMgSi2O6), hedenbergite (CaFeSi2O6), and jadeite (NaAlSi2O6).

Pyroxenes are widespread in both igneous and metamorphic rocks. They are particularly abundant in mafic and ultramafic igneous rocks, such as basalt and peridotite, and are also common constituents of many metamorphic rocks. Their presence and composition can provide valuable clues about the conditions under which rocks formed, including temperature, pressure, and the chemical environment.

In addition to their geological significance, some pyroxenes have economic importance. For instance, jadeite is a highly prized gemstone, and other pyroxenes can be sources of certain elements. The study of the pyroxene series is a fundamental aspect of mineralogy and petrology.