Ferroaugite

Ferroaugite is a mineral belonging to the pyroxene group, specifically a calcium-iron-magnesium silicate. It is a dark-colored, monoclinic pyroxene, often appearing black or dark green, and is a common constituent of many mafic and ultramafic igneous rocks. The presence of iron is what distinguishes it from other augite varieties. ferroaugite forms through crystallization from magma under high temperatures and pressures, and its composition can vary depending on the specific geological environment. It's characterized by its prismatic cleavage and hardness, often exhibiting a vitreous luster.

Ferroaugite meaning with examples

• The basaltic lava flow contained numerous phenocrysts of ferroaugite, providing evidence of its formation from iron-rich magma. Its crystalline structure revealed that the magma had cooled gradually, allowing for the formation of large, well-defined crystals, a key indicator of its origin. The mineral composition helped to understand the rock's deep-earth origin. The ferroaugite’s presence showed the magma's chemical composition, supporting the igneous classification of the basalt rock.
• Petrographic analysis of the gabbro revealed the presence of significant ferroaugite alongside plagioclase feldspar. The dark color of the ferroaugite helped to define it and gave the gabbro its characteristic speckled appearance. The study aimed to analyze the rock’s evolution, including ferroaugite's role. This mineral formed, offering insight into the formation of the magma. The rock's texture, the presence of ferroaugite, and the overall structure gave clues about its cooling history.
• During the study of an ultramafic intrusion, detailed mineralogical examination identified ferroaugite as a key component of the pyroxenite. Ferroaugite's composition showed a high iron content and this provided valuable insights into the deep mantle processes. The ferroaugite crystals found provided a look into the origin, composition and origin of this intrusion. The identification of the ferroaugite was crucial to understanding the mineralogy.
• Samples from the volcanic cinder cone displayed abundant ferroaugite, indicating a rapid cooling history. Its presence suggests a volcanic environment rich in iron, providing information about magma composition and origin. The small, glassy ferroaugite crystals provide a clear indicator of volcanic activity. ferroaugite presence helped classify the rock's evolution within this active volcanic region, further understanding its formation.