Bardon Hill Quarry is a 58.2-hectare geological Site of Special Scientific Interest east of Coalville in Leicestershire. It is a Geological Conservation Review site. This quarry has been operated for over 400 years and produces three million tonnes of rock a year, 15% of UK output. It exposes rocks from an andesitic Precambrian volcano, similar to the 1995 Montserrat eruption, about 570 million years ago. There are veins of quartz containing copper and gold.