Hydrosilicate liquids in the system rare-metal granite–Na2O–SiO2–H2O as accumulators of ore components at high pressure and temperature. / Smirnov, S. Z.; Thomas, V. G.; Kamenetsky, V. S. et al.
In: Petrology, Vol. 25, No. 6, 01.11.2017, p. 625-635.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Hydrosilicate liquids in the system rare-metal granite–Na2O–SiO2–H2O as accumulators of ore components at high pressure and temperature
AU - Smirnov, S. Z.
AU - Thomas, V. G.
AU - Kamenetsky, V. S.
AU - Kozmenko, O. A.
PY - 2017/11/1
Y1 - 2017/11/1
N2 - Experimental investigations in the system rare-metal granite–Na2O–SiO2–H2O with the addition of aqueous solutions containing Rb, Cs, Sn, W, Mo, and Zn at 600°C and 1.5 kbar showed that the typical elements of rare-metal granites (Li, Rb, Cs, Be, Nb, and Ta) are preferentially concentrated in hydrosilicate liquids coexisting with aqueous fluid. The same behavior is characteristic of Zn and Sn, the minerals of which are usually formed under hydrothermal conditions. In contrast, Mo and W are weakly extracted by hydrosilicate liquids and almost equally distributed between them and aqueous fluids. Liquids similar to those described in this paper are formed during the final stages of magmatic crystallization in granite and granitepegmatite systems. The formation of hydrosilicate liquids in late magmatic and postmagmatic processes will be an important factor controlling the redistribution of metal components between residual magmatic melts, minerals, and aqueous fluids and, consequently, the mobility of these components in fluid-saturated magmatic systems enriched in rare metals.
AB - Experimental investigations in the system rare-metal granite–Na2O–SiO2–H2O with the addition of aqueous solutions containing Rb, Cs, Sn, W, Mo, and Zn at 600°C and 1.5 kbar showed that the typical elements of rare-metal granites (Li, Rb, Cs, Be, Nb, and Ta) are preferentially concentrated in hydrosilicate liquids coexisting with aqueous fluid. The same behavior is characteristic of Zn and Sn, the minerals of which are usually formed under hydrothermal conditions. In contrast, Mo and W are weakly extracted by hydrosilicate liquids and almost equally distributed between them and aqueous fluids. Liquids similar to those described in this paper are formed during the final stages of magmatic crystallization in granite and granitepegmatite systems. The formation of hydrosilicate liquids in late magmatic and postmagmatic processes will be an important factor controlling the redistribution of metal components between residual magmatic melts, minerals, and aqueous fluids and, consequently, the mobility of these components in fluid-saturated magmatic systems enriched in rare metals.
KW - FLUID-INCLUSIONS
KW - COMPLETE MISCIBILITY
KW - GRANITE-PEGMATITE
KW - MELT INCLUSIONS
KW - SASSOLITE H3BO3
KW - HYDROUS FLUIDS
KW - SILICATE MELTS
KW - MALKHAN FIELD
KW - DEGREES-C
KW - QUARTZ
UR - http://www.scopus.com/inward/record.url?scp=85032829364&partnerID=8YFLogxK
U2 - 10.1134/S0869591117060054
DO - 10.1134/S0869591117060054
M3 - Article
AN - SCOPUS:85032829364
VL - 25
SP - 625
EP - 635
JO - Petrology
JF - Petrology
SN - 0869-5911
IS - 6
ER -
ID: 25762050