Hydrothermal Gem Deposits: The Emerald Deposits of Colombia

  • Peter C. Keller


When hot magma rises through the earth’s crust, it often fails to reach the surface to erupt as a volcano. Instead, it forms large magma bodies that cool very slowly to form large granitic masses, which, if large enough, are called batholiths.


Carbonaceous Shale Smithsonian Institution Vein Mineral Hydrothermal Deposit Hydrothermal Vein 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Van Nostrand Reinhold 1990

Authors and Affiliations

  • Peter C. Keller
    • 1
  1. 1.Natural History Museum of Los Angeles CountyUSA

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