Borate Minerals and the Origin of Borate Deposits. Borax and Sassolite Deposits. Calcium, Magnesium, or Silicate Buried Deposits. Calcium or Magnesium Surface (Playa or Mantle) Deposits. Lake or Brine Deposits. Marine Borate Occurrences; Isotopic Distribution. Mining. Processing. Uses of Borates. Borate Industry Statistics. Phase Data and Physical Properties of Borates. Subject Index.