`silica` Related Article Results

Obsidian is a natural rock formed by the rapid cooling of magma with high silica content, also known as volcanic glass. This rapid cooling prevents the development of a crystalline structure, resulting in obsidian's amorphous composition. Since prehistoric times, obsidian has been used in the manufacture of cutting tools and has also been favored for the production of ornaments and jewelry. Archaeological findings demonstrate that obsidian provides significant insights into ancient trade routes