The Occurrence, Production, and Trade of Non-Metallic Industrial Minerals in Costa Rica

  • S. J. Mathers
  • N. Morales
Part of the Circum-Pacific Council for Energy and Mineral Resources Earth Science Series book series (CIRCUM-PACIFIC, volume 16)

Abstract

Costa Rica can be divided into a series of distinct geological units which contain characteristic assemblages of non-metallic industrial minerals. The most important are the Tertiary sediments, which include limestone and sandstone resources and the Quaternary volcanics which host deposits of sulfur, kaolin, diatomite, pumice, and aggregate.

Total production of non-metallic industrial minerals in 1988 was about 7.6 million MT with an unprocessed value of about US$ 40 million. On average Costa Rica imports about US$ 6 million of raw materials per year including large quantities of gypsum, glass sand, and fertilizer raw materials. Costa Rica has the resources to develop products such as high-purity limestone, diatomite, pumice, sulfur, aggregates, and kaolin-rich clays to both reduce its imports and develop valuable exports.

Keywords

Clay Sandstone Shale Cretaceous Beach 

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Copyright information

© Circum-Pacific Council for Energy and Mineral Resources 1995

Authors and Affiliations

  • S. J. Mathers
    • 1
  • N. Morales
    • 2
  1. 1.Geological SurveyKeyworth, NottinghamUK
  2. 2.Dirección de GeológiaMinas y HidrocarburosSan JoséCosta Rica

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