the St. Austell granite

St. Austell granite is a type of coarse-grained igneous rock found in Cornwall, England, centered around the town of St. Austell. Formed deep underground from slowly cooled magma rich in minerals like quartz and feldspar, it has a light to medium gray color with a granular texture. This granite is notable for its durability and was historically used in building and construction, including notable structures like parts of London’s Tower of London. Its mineral composition and appearance make it distinctive and valuable as a natural stone resource.