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Dec 26, 2024
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GEOL 4 - (NS) Introduction to Gemology and Gemstones
Periodically
Study of gem minerals, a specialized branch of chemical and physical mineralogy. Crystal structure, atomic distribution, chemical composition and interrelated physical properties of gem minerals including hardness, color, brilliance, refraction, cleavage and other identifying properties are emphasized. The role of gems as rock forming minerals including the genetic origin in igneous, sedimentary and metamorphic rocks and process environments are discussed. Testing procedures for the identification of common gemstones including visual properties, optical measurements and x-ray diffraction analysis. A weekend field trip to view the National Gem Collection at the Smithsonian Institution. (2 hours lecture, 2 hours laboratory.)
Credits: 3 s.h.
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