Pyroxene

Pyroxene is a group of important rock-forming silicate minerals commonly found in igneous and metamorphic rocks. They are characterized by their chain silicate structure, where silicon-oxygen tetrahedra are linked in chains. Pyroxenes vary in composition, often including calcium, iron, magnesium, and other elements like aluminum and sodium, and crystallize in the monoclinic or orthorhombic crystal systems, leading to a wide range of colors, from green to brown to black. Their presence can be a key indicator of a rock's formation environment.

Pyroxene meaning with examples

• The dark green coloration of the basalt hinted at the presence of pyroxene, confirming its origin from cooled volcanic lava. Geologists analyzed the mineral's composition to understand the magma's history and cooling rate. The pyroxene's specific chemical formula aided in classifying the rock and its potential for rare element deposits.
• During the metamorphic transformation, the original mineral assemblage was replaced by new phases. Some areas showed a concentration of pyroxene, indicative of increased pressure and temperature conditions. The unique textural patterns and the association of pyroxene with other high-temperature minerals further supported the analysis and provided insights into the rock's formation.
• In the lunar samples, the identification of different types of pyroxene like augite was crucial in determining the moon's internal structure. The detailed examination of pyroxene crystals provided insights into the mantle composition. The presence of pyroxene confirmed the magma genesis of the lunar crust.
• The rock's high density was attributed to the presence of dense minerals. Microscopic analysis of thin sections identified the presence of pyroxene. The study showed how variations in pyroxene composition within the same rock mass reflect differing magmatic conditions during its evolution, suggesting a complex geological history.