Transport and Storage of Potassium in the Earths Upper Mantle and Transition Zone: an Experimental Study to 23 GPa in Simplified and Natural Bulk Compositions |
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Authors: | KONZETT, JURGEN FEI, YINGWEI |
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Affiliation: | GEOPHYSICAL LABORATORY AND CENTER FOR HIGH-PRESSURE RESEARCH, CARNEGIE INSTITUTION OF WASHINGTON, 5251 BROAD BRANCH ROAD NW, WASHINGTON DC, 20015-1305, USA |
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Abstract: | We have investigated the stability and composition of potassiumamphibole and its high-pressure breakdown product phase X insynthetic peralkaline and subalkaline KNCMASH (K2ONa2OCaOMgOAl2O3SiO2H2O)and natural KLB-1 peridotite bulk compositions between 10 and23 GPa at 8001800°C. In the KNCMASH system, potassiumamphibole reaches its upper pressure stability limit at 1315GPa at |
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