The California Geological Survey provides an annual summary of the state’s mineral resource production exclusive of oil, gas, coal, and geothermal energy.
California remained one of the largest producers of non-fuel minerals in the United States in 2018. This report discusses the commodities produced as well as production and trends for many commodities. This report is based on production data reported by mine operators to the California Division of Mine Reclamation (DMR).
Previous Annual Reports of Non-Fuel Mineral Production