Geochemical environment of ore deposition

The geochemical environment of ore deposition for Besshi-type deposits is generally difficult to estimate because of the effect of metamorphism. 

Agency of Natural Resources and Energy (1993) Report of the survey in the occurrence of rare metal resource evaluation of its potential. Tokyo Ministry of International Trade and Industry (in Japanese). 

(1988) Geochemistry of mineral deposition from geothermal waters Deposition processes of common minerals found in various geothermal fields and case study in the Fushime field. Chinetsu, 25, 44-61 (in Japanese). 

and Yasuda, Y. (1991) Chemical and physical processes occurring in Fushime geothermal system, Kyushu, Japan. Geochem. J., 25, 315-333. 

Albarede, F., Michard, A., Minster, J.F. and Michard, G. (1981) Sr/ Sr ratios in hydrothermal waters and deposits from the East Pacific Rise at 21°N. Earth Planet. Sci. Lett, 55, 229-236. 

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Numerous geochemical data (fluid inclusions, stable isotopes, minor elements) on the epithermal vein-type deposits in Japan are available and these data can be used to constrain geochemical environment of ore deposition (gas fugacity, temperature, chemical compositions of ore fluids, etc.) and origin of ore deposits. 

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