basalt

Basalt is a dark, fine-grained volcanic rock formed from the rapid cooling of low-viscosity lava at the Earth’s surface. It primarily consists of minerals like pyroxene, plagioclase, and olivine, giving it a dark gray to black color. Basalt is the most common volcanic rock, found in oceanic crust, volcanic islands, and flood basalt regions. Its uses include construction materials, decorative stone, and historical tools. Due to its durability and availability, basalt plays a significant role in geology and various industries.