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6903114 
Journal Article 
Experimental Study of Amphibole Interaction with H2O–HCl Fluid at 650–750°C, 5–7 Kbar: Implications for High-Temperature Metasomatism of Metabasites 
Rekhov, EN; Shcherbakova, TF; Konilov, AN; ,; Khodorevskaya, LI; , 
2020 
Yes 
Geochemistry International
ISSN: 0016-7029 
MAIK NAUKA/INTERPERIODICA/SPRINGER 
NEW YORK 
58 
7 
779-794 
WOS:000548669400002 
Interaction between amphibole and H2O-HCl fluid was experimentally studied in an internally heated pressure vessel (IHPV) at 650-800 degrees C and 5-7 kbar. The stability of the anorthite-amphibole association was approved to be constrained atT= 650-800 degrees C, (P= 5-7 kbar) within a range of HCl fugacity (f(HCl)) 50 100 mu m) corundum and quartz crystals. Based on experimental data, it is demonstrated that interaction between metabasite with acidified fluid resulted in Ca, Fe, and no so much Mg removal from the metabasite (as inferred for rocks cropping out on Kii Island in the White Sea). The HCl fugacity in the metasomatizing fluid was approximately 50-200 bar atT= 650 - 800 degrees C,P= 5-7 kbar. Rock depletion in bases led to that the residual matrix enriched in Al(2)O(3)and SiO2, and this was favorable for the origin of corundum, on the one hand, and highly silicic rocks, like quartzite, on the other. 
HCl; acidic fluid; amphibole; gedrite; cordierite; metasomatites; metagabbroids; corundum