Browsing ELibrary by Author "Feenstra A."

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AN EXPERIMENTAL STUDY OF FE-AL SOLUBILITY IN THE SYSTEM CORUNDUM-HEMATITE UP TO 40 KBAR AND 1300°C

Feenstra A.; Samann S.; Wunder B. (2005)

The mutual solubility in the system corundum–hematite [[α-(Al, Fe3+)2O3] was investigated experimentally using both synthetic and natural materials. Mixtures of γ-Al2O3 and α-Fe2O3 (weight ratios of 8:2 and 10:1) were used ...
AN EXPERIMENTAL STUDY OF THE FE-MN EXCHANGE BETWEEN GARNET AND ILMENITE

Feenstra A.; Engi M. (1998)

The exchange equilibrium was studied by reversal experiments as a function of temperature (650 ≤ T ≤ 1000 °C), pressure (10 ≤ P ≤ 20 kbar), and chemical composition. Experiments were performed in a piston-cylinder apparatus ...
EXPERIMENTAL DETERMINATION OF ACTIVITIES IN FETIO3-MNTIO3 ILMENITE SOLID SOLUTION BY REDOX REVERSALS

Feenstra A.; Peters T. (1997)

Solid solutions of (Fe,Mn)TiO3 were synthesized, mostly at 0.10 XMn intervals, at 1 bar, 900°C and log f O2 = –17.50. Analysis by EMP indicate an ideal stoichiometry for the Fe-Mn ilmenites with (Fe+Mn) = Ti = 1.000 when ...
FE2+-O AND MN2+-O BONDING AND FE2+- AND MN2+-VIBRATIONAL PROPERTIES IN SYNTHETIC ALMANDINE-SPESSARTINE SOLID SOLUTIONS: AN X-RAY ABSORPTION FINE STRUCTURE STUDY

Sani A.; Quartieri S.; Boscherini F.; Antonioli G.; Feenstra A.; Geiger C.A. (2004)

X-ray absorption fine structure (XAFS) measurements at the Fe and Mn K-edges were undertaken to investigate the Fe2+-O and Mn2+-O bonding, and Fe2+- and Mn2+-vibrational properties for a series of synthetic almandine-spessartine, ...

Browsing ELibrary by Author "Feenstra A."

Browsing ELibrary by Author "Feenstra A."

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