| Citation: | Mohamed Abd El Monsef, Hassan Z. Harraz. Genetic Model for Beryl/Emerald-Related Schist in Egypt: Clues of Metasomatism. Journal of Earth Science, 2025, 36(6): 2498-2512. doi: 10.1007/s12583-024-0087-z
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Um Solimate emerald deposit is a unique example for the well-known beryl-related schist type. Where, the Be-mineralization is restricted to NNE-trending quartz veins/lenses and as disseminated emerald grains within the altered-metasomatic zones of phlogopite- and graphite-schists. The study of fluid inclusions for the mineralized quartz vein revealed three major groups: (ⅰ) aqueous (H2O-NaCl), (ⅱ) aqueous-carbonic (H2O-CO2-[CH4]-NaCl), and (ⅲ) aqueous-hydrocarbonic (H2O-CH4) FIs. They have been further classified into five types (namely: types 1, 2, 3, 4 and 5) according to number of phases at the room temperature (20 ℃) as well as microthermometric measurements. Based upon the study of fluid inclusions, the initial-ore forming fluid was supposed to be of magmatic nature, characterized by a relatively high temperature of homogenization (
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