A preliminary note on fluid inclusions in some granitic rocks from Egypt.

概要

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Fluid inclusions in granitic rocks from Egypt were investigated to find out any genetic relation between the intrusion of granitic rocks and mineralization. Liquid inclusions with high filling degrees are generally found in "Older Granites" which form batholithic masses with some gaseous inclusions. Polyphase fluid inclusions carrying halite crystals are characteristically recognized in "Younger Granitoids" which generally form stock-like bodies. The coexistence of fluid and gaseous inclusions with various filling degrees is also characteristically observed in this type of granites. Some of these "Younger Granitoids" are genetically related to the tin-tungsten and copper mineralization. It is inferred that apophyses of granitic intrusives are favorable for the concentration of postmagmatic brines and that these stocks intruded into shallow places.
資源地質学会の論文