👉 The term "corneosiliceous" refers to a type of mineral that is commonly found in rocks and other materials. It is composed primarily of silica, which is a mineral that has been present on Earth for millions of years. Corneosiliceous minerals are typically found in the uppermost layers of sedimentary rock, where they can be exposed to high temperatures and pressures over time. In these environments, the silica crystals may have formed from minute particles that were suspended in water