{"thcode":2,"term":{"code":747,"name":"mineralogy","parent":464,"scope":"Branch of earth sciences concerned with the study of naturally occurring inorganic elements or compounds."},"uf":[{"name":"crystallography","usewith":false},{"name":"gemology","usewith":false}],"bt":[{"code":464,"name":"geology","parent":291,"scope":"Study of the planet earth, its composition, structure, physical and chemical processes, and history since its origin."},{"code":291,"name":"earth sciences","parent":1019,"scope":"Broad term for all science related to the study of the earth."},{"code":1019,"name":"sciences","parent":1,"scope":"Major educational fields, fields of study, and professional groupings within USGS."},{"code":1,"name":"Categories","parent":null,"scope":"Thematic terms for categorizing information resources.  This thesaurus is intended to support finding and understanding scientific information."}],"nt":[],"rt":[{"code":429,"name":"gem resources","parent":798,"scope":"Deposits of rare minerals prized for their color, durability, sparkle, and clarity when cut and polished and used as ornaments or jewelry."},{"code":724,"name":"metallic mineral resources","parent":745,"scope":"Resources from which ductile, malleable, opaque,and reflective metals that are also good heat and electricity conductors can be extracted."},{"code":745,"name":"mineral resources","parent":777,"scope":"Natural occurrences of useful inorganic elements or compounds."},{"code":1337,"name":"x-ray diffraction","parent":153,"scope":"Study of crystals which uses short wave electromagnetic radiations (x-rays). The xrays, scattered by the crystal atoms, show a characteristic interference pattern that is dependent upon the structure of the crystal."}]}