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FLUID INCLUSION APPLICATION IN EPITHERMAL GOLD EXPLORATION
Abstract
Fluid inclusion application in epithermal gold exploration is based on the fluid inclusion characteristic and its relation to the mineralization. These characteristics include the type of fluid inclusions and different fluctuations in their micro thermometry measurement and chemical composition. In this regard, based on the micro thermometry measurements, the fluid inclusions in epithermal gold systems have the homogenization temperatures between 100-300 ºC and the salinity of 5\% NaCl equiv. in average. Within this system, the metal-complexes would be broken in the average temperatures of 250ºC resulting the metal deposition. The existence of inclusions with the temperature of 250ºC, represent the conditions in which it was possible to form an economic deposit. On the other hand, the existence of vapor- and liquid enriched fluid inclusion in the epithermal gold mineral deposits, could be a logical reason to suggest a boiling condition “as a major effective factor” for gold instability within such a bisulphate complex. Also fluid inclusions with low concentration of CO2 indicate an enrichment of gold-purity during the short period of time, and the fluid inclusions with low of H2S contents, indicates a depletion of gold-pyrite in the system. Generally speaking, within these systems, fluid inclusions with high homogenization temperature and salinity indicate magmatic productive fluids, and fluid inclusions with low homogenization temperature and salinity, indicate the meteorite waters source fluids. Therefore by investigation in the analysis results of these inclusions such as fluid density, combination and homogenization temperature and its pressure, it is possible to determine the source of the productive fluids within the deposit, as well as the type of complexes, temperature and salinity and also the various zone formation temperatures of the system.
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References12
Arribas, Jr., A., 1995. Epithermal high-sulfidation deposits— a review. In: Thompson, J.F.H. (Ed.), Magmas, Fluids and Ore Deposits. Mineralogical Association of
Canada, Short Course vol. 23, pp. 419–454.
Berger, B.R. and Eimon, P.I. 1983, Conceptual models of epithermal metal deposits in Shanks, W.C. ed., Cameron Volume on Unconventional Mineral Deposits: Society OF Mining Engineers, New York, and p. 191-205.
Berger, B.R. and Henley, R.W., 1989.Advances in the understanding of epithermal gold-silver deposits –with special reference to deposits of the western United States. In: R. Keays, R. Ramsay and D. Groves (Editors). The geology of the gold deposits: the prospective in 1988.Econ. Geol. Monoger.6. Bodnar,R.J., 1981, Use of fluid inclusion in mineral exploration :Comparison of observed features with theoretical and experimental data on the ore genesis [abs.] :geology society of America abstracts with program, vol. 13,p. 412.
Bodnar, R.J., 1983. A method of calculating fluid inclusion volumes based on vapor bubble diameters and P–V–T–X properties on inclusion fluids. Econ. Geol. 78, 535–542.
Brown, P.E., 1989. FLINCOR: a microcomputer program for the reduction and investigation of fluid inclusion data. Am. Mineral. 74, 1390–1393.
Jannas, R.R., Beane, R.E., Ahler, B.A., Brosnahan, D.R., 1990.Gold and copper mineralization in the El Indio deposit, Chile.Journal of Geochemical Exploration 36, 233–266. Roedder, e., 1984, Fluid inclusion .I n Reviews in Mineralogy, vol. 12, ed. P.H., Mineralogical Soc of Amer. 644pp.
Ruggieri, G., Latanzi, P., Luxoro, S.L., Dessi, R., Benvenuti, M., Tanelli, G., 1997. Geology, mineralogy, and fluid inclusion data of the Furtei high-sulfidation gold deposit, Sardinia, Italy. Economic Geology 92, 1 –19.
Shenberger, D. M. and Barnes, H. L., 1989 Solubility of aqueous sulphide solutions from 150 to 35ÉC.Geochim. Cosmochim. Acta.53, 269-278.
Wu, R.-S., Tian, C.-L., Yang, F., 1995. Mineralization patterns and targeting in flanking regions of Axi gold deposit in Yining. Publication of National 305 Project Office of Xinjiang Uygur Autonomous Region,
Xinjiang, China. (248 pp., in Chinese).
Zhang, Y.-G., Frantz, J.D., 1987. Determination of the homogenization temperatures and densities of supercritical fluids in the system NaCl– KCl–CaCl2 –H2O using synthetic fluid inclu- 2 2 sions. Chem. Geol. 64, 335–350. 8
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