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Glossary
Pages 187-190

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From page 187...
... Geotextiles: a permeable geosynthetic comprised solely of textiles (Idaho Transportation Department, 2011) Greenschist-facies: low to medium metamorphism corresponding to temperatures of about 300°C to 500°C and pressures of 3 to 20 kbar, which is typical of continental collision tectonics (Arndt, 2011)
From page 188...
... Processing: in this report, processing indicates both the physical processing sometimes called "beneficiation" along with chemical processing that is principally hydrometallurgical for gold, although the last steps are pyrometallurgical Proterozoic: a geologic eon that began approximately 2.5 billion years ago and ended 542 million years ago (USGS, 2007a) Pulp: is a freely flowing mixture of powdered ore and water (911 Metallurgist, 2016)
From page 189...
... Volcanic: igneous rock formed near the surface (Merriam-Webster, 2022) Volcanogenic massive sulfide: accumulations of sulfide minerals that form due to hydrothermal action on the seafloor; ancient varieties may now be exposed on land (Jamieson et al., 2016)


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