FINAL REPORT February 16, 1953 to February 15, 1954 COMPOSITION AND SIGNIFICANCE OF FLUID-FILLED INCLUSIONS IN QUARTZ AND OTHER MINERALS

摘要

Practically every synthetic or natural quartz crystal other than the best optical grade has some fluid filled inclusions in it, and most natural white quartz contains on the order of (10)9 such inclusions, averaging about 1 micron in diameter, in every cc. In some cases these inclusions can be proven to be a true sample of the original medium from which deposition of the quartz crystal took place, trapped during growth of the crystal; in others they are evidently samples of fluid present in the quartz during the healing of fractures formed after the original crystallization. In either event, these inclusions preserve for us actual samples of fluids from which quartz has grown in nature or in the laboratory.nA method has been developed whereby it is possible to extract this fluid from the inclusions and analyze it chemically.