Platinum-nickel-chromium deposits. Geology, exploration and reserve base / Платина-никель-хромовые месторождения. Геология, изучение и ресурсная база

This book will address three primary metals and their associated metals. The primary metals are Platinum Group of Elements or Metals (PGE or PGM), nickel, and chromium. The associated metals include copper, gold, silver, and cobalt. The platinum group consists of six metals and occurs naturally in close association with one another as well as with nickel, chromium, copper, and cobalt. The group of metals represents a unique geological process having a common source of metal supply and a genetic model. The PGM is among the least abundant group of elements of the Earth’s element family. The working deposits in South Africa and Russia are by far the largest for the PGM. The nickel deposits are significant in Canada, United States, Australia, Africa, Brazil, New Caledonia, Philippines, Indonesia, and the Caribbean. The largest chromite deposits are in South Africa, Zimbabwe, Kazakhstan, Turkey, Finland, and India. The metals platinum, nickel, and chromium will be discussed in the same order throughout the book. The individual metal will often be substituted by its common ore-forming minerals for simple understanding in the geological domain. <...>