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Labradorite (Ca 0.6 Na 0.4 Al 1.6 Si 2.4 O 8 ) dissolution rates were measured using a mixed flow reactor from 30 to 130°C as a function of dissolved CO 2 (1.2×10 −5 and 0.6 M), and aluminum (10 −6 to 10 −3 M) at pH 3.2. Over these experimental conditions, labradorite dissolution can be described with a single rate expression...
Selected mineralized black shales of Devonian age from the Selwyn Basin, Northwest Territories (Canada) were analyzed by Nuclear Reaction Analyses (NRA) and electron microprobe for nitrogen and carbon in silicates, sulfides, phosphates and organic matter in order to give new insights on nitrogen and carbon fractionation processes during diagenesis and hydrothermal infiltration. Hydrothermal feldspars...
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