The largest vermiculite mining operation in the world is located in the Phalabowra (also sometimes spelled Palabora) district of the Republic of South Africa. Other countries producing significant amounts of vermiculite include the United States, China, Russia, Brazil, Japan, Zimbabwe, and Australia.
Diamond Processing Plant Equipment. Producing areas in South Africa, South West Africa, The Congo Republic, Angola, Ghana, Tanganyika and Sierra Leone account for over 95% of world production, estimated to be 26,000,000 metric carats, valued at 265,000,000 for the year 1959. Approximately 15 to 20% of the production is gem quality, representing about 70% of the total value.