Magnesiohornblende

Magnesiohornblende is a complex amphibole mineral, a member of the hornblende group, and a silicate containing iron, magnesium, calcium, sodium, and hydroxyl groups. It is typically dark green, brown, or black in color, with a vitreous luster and perfect prismatic cleavage. Its formation occurs within metamorphic and igneous rocks, where it crystallizes under specific temperature and pressure conditions. The presence of magnesium distinguishes it from other hornblende varieties. It's an important indicator for understanding the geological history of rock formations. The name combines the presence of magnesium with the mineral hornblende.

Magnesiohornblende meaning with examples

• Geologists analyzing a metamorphic rock discovered abundant crystals of Magnesiohornblende, indicating a moderate-to-high-grade metamorphic environment and the presence of magnesium-rich minerals. The detailed mineral analysis helped the geologists understand the pressures the rock was subjected to. Magnesiohornblende is a reliable indicator of rock transformation.
• During a study of a specific volcanic area, researchers identified large deposits of Magnesiohornblende within the resulting igneous rocks, allowing the researchers to understand the composition of the original magma. Studying the crystals also led to a better comprehension of the cooling rates the magma experienced. The presence of the mineral was used as a geological timestamp.
• The identification of Magnesiohornblende in a specific rock sample, alongside other minerals, supported the hypothesis of a previous fault line. The mineral's composition provided insights into the chemical processes, also shedding light on the original geologic forces. It was determined by chemical analysis that the crystal structure was a form of magnesiohornblende.
• When examining a sample, the mineralogist determined that the crystals were consistent with Magnesiohornblende based on their distinctive prismatic form, dark color, and the environment in which they were formed. They were then compared with the results of laboratory tests. It was finally classified as Magnesiohornblende by the mineralogist.