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Showing 1 to 4 of 4 for “"zone refining"”.
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Purification of Cd, Zn and Te for CdZnTe growth
… growth. Specifically, vacuum distillation, zone refining and H[subscript]2 gas flow assisted zone refining were all investigated as methods to purify the constituent elements of CdZnTe. A unique multi-chamber ampoule was used to enable a purification sequence starting with double vacuum …
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Investigation of iron isotope variability in the bimodal Aztec Wash Pluton, Eldorado Mountains, Nevada
… compositional zonation similar to that found in zoned plutons. The process that alters andesitic starting material to granitic and mafic end members within a temperature gradient is called thermal migration zone refining (Lundstrom, 2009). In addition to the compositional changes that occur …
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The geochemistry and geomicrobiology of relict hydrothermal sulphide deposits
… sediments from the Alvin relict hydrothermal zone in the TAG area at 26º8'N (Mid-Atlantic Ridge). The solid-phase and concomitant pore water concentrations of AI, Si,Ca, C<sub>tot</sub>, C<sub>org</sub>, S, Fe, Mn, Cu, Zn, P, V, Co, U, Mo, Au, Ag and REEs were measured in a 230 cm long gravity …
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The isotope geochemistry of uranium: Igneous petrology, ore deposits, and groundwater contamination
This study applies high precision 238U/235U measurement techniques two three geologic settings: basalt differentiation, uranium ore genesis, and the remediation of a uranium-contaminated groundwater system. In the latter two cases, 238U/235U is used as a tracer of uranium reduction. 238U …