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pro vyhledávání: '"A. A. Poustovetov"'
Publikováno v:
In Journal of Volcanology and Geothermal Research 2003 123(3):245-265
Autor:
Heather A. Lowers, D. Kirk Nordstrom, Heather E. Jamieson, Alexei Poustovetov, Charles N. Alpers, Clare Robinson
Publikováno v:
The Canadian Mineralogist. 43:1225-1242
Jarosite-group minerals accumulate in the form of stalactites and fi ne-grained mud on massive pyrite in the D drift of the Richmond mine, Iron Mountain, California. Water samples were collected by placing beakers under the dripping stalactites and b
Publikováno v:
Journal of Volcanology and Geothermal Research. 123:245-265
The morphology and composition of spinel in rapidly quenched Pu’u ’O’o vent and lava tube samples are described. These samples contain glass, olivine phenocrysts (3–5 vol.%) and microphenocrysts of spinel (∼0.05 vol.%). The spinel surrounde
Autor:
A. A. Poustovetov, Peter L. Roeder
Publikováno v:
Contributions to Mineralogy and Petrology. 142:58-71
A set of empirical equations is developed which allows calculation of chromian spinel composition in equilibrium with a basaltic melt under a known set of conditions. These equations are calibrated with published experimental data for the temperature
Publikováno v:
The Canadian Mineralogist. 39:397-416
Microphenocrysts of chromian spinel in glass from an East Pacific Rise lava and three Icelandic subglacial lavas show a variety of complex skeletal, hopper, vermiform and chain textures. These grains of chromian spinel are larger than those found in
Autor:
Peter L. Roeder, Alexei Poustovetov
Publikováno v:
The Canadian Mineralogist. 39:309-317
A thermodynamic model of Cr distribution between chromian spinel and basaltic melt has been developed using the [Sack & Ghiorso (1991)][1] thermodynamic model for chromian spinel and an equation analogous to that of [Sack et al. (1980)][2] to calcula
Publikováno v:
Journal of Volcanology and Geothermal Research. 87:151-171
Small euhedral chromite crystals are found in olivine macrophenocrysts (Fo 80–84 ) from the basaltic andesites (150 ppm Cr) erupted in 1943–1947, and in orthopyroxene macrophenocrysts of the andesites (75 ppm Cr) erupted in 1947–1952. The major
Akademický článek
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Akademický článek
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Publikováno v:
Journal of Volcanology and Geothermal Research; 1998, Vol. 87 Issue: 1 p151-171, 21p