What is Calc-tuff?

Calc-tuff is a type of rock that is formed through the chemical precipitation of calcium carbonate (CaCO3) from solution. It is a soft, porous, and somewhat fragile rock that is often found in sedimentary deposits. Calc-tuff is typically white or light gray in color, and it has a fine-grained texture.

Calc-tuff is created when calcium-rich fluids, such as groundwater or seawater, pass through layers of limestone or other calcium carbonate-rich rocks. As the fluid flows through these rocks, it dissolves some of the calcium carbonate and carries it away to a new location, where it can precipitate out of solution and form a deposit of calc-tuff.

Calc-tuff is an important rock type in many geological settings, including karst landscapes, cave systems, and hydrothermal veins. It is also used as a building material in some parts of the world, particularly in areas where limestone is abundant.