Amphibole

Amphibole refers to a group of inosilicate minerals, typically dark-colored and found in igneous and metamorphic rocks. They are characterized by their double-chain silicate structure, forming long, prismatic or fibrous crystals. Chemically, amphiboles are complex silicates containing silicon, oxygen, and varying amounts of other elements like iron, magnesium, calcium, aluminum, and sodium. These elements influence their physical properties, including hardness, density, and color. Amphiboles are widespread in the Earth's crust and are significant in geological studies, contributing to our understanding of rock formation and the Earth's history.

Amphibole meaning with examples

• During the volcanic eruption, the rapid cooling of the lava resulted in the formation of various minerals, including amphibole. The specific type of amphibole present offered geologists important clues about the lava's composition and origin. Its fibrous structure provided evidence that the cooling was rapid. These clues, enabled geologists to learn more about the eruptions.
• The metamorphic rock samples collected from the mountain range showed a distinct presence of amphibole minerals. The alignment of the amphibole crystals indicated the direction of the intense pressure experienced by the rock during its formation. Detailed analysis of amphibole composition revealed the pressure and temperature conditions.
• While exploring a remote area, the team discovered a large outcropping of a dark-colored rock with long, needle-like crystals identified as amphibole. The unusual crystal structure and chemical composition were a focus. Further investigation of the amphibole could reveal information about the region's geological history.
• The structural engineer analyzed the building's foundation, comprised of granite containing amphibole. Knowing the amphibole type would provide the ability to estimate its durability and resilience. This analysis contributed to the assessment of the building's long-term stability and its capacity to resist environmental stress.