👉 Polyhalite is a type of volcanic rock that contains layers of various minerals, including halite (a hydrated sodium carbonate) and dolomite. It is commonly found in areas where there is a high concentration of water vapor or lava flow. Polyhalites are formed when magma from the volcano cools below its surface and dissolves the dissolved carbon dioxide and other materials into a liquid state. This liquid then solidifies, forming a hard, durable rock with a variety of colors and textures. The
