We have found corundum in direct contact with quartz and biotite as inclusions garnet the pelitic gneisses of northern Austkampane Northeastern (NE) Terrane Sør Rondane Mountains (SRM), East Antarctica. Our samples, which include corundum–bearing gneisses, show petrographic features such staurolite garnet, compositional zoning orthoamphibole Al decreasing toward rims, late–stage cordierite form...

Abstract This study used aluminum scraps to produce a secondary metal matrix for heat storage analyses. Silica and kaolin reinforced composites were successfully produced via stir casting. The X-ray diffraction (XRD) scanning electron microscopy (SEM) employed phase microstructure characterization. XRD revealed alumina (corundum), kyanite phases while SEM indicated pores in the composites. Dens...

The effect of particle size and sintering temperature the mixtures kyanite metallic aluminum related to thermal transformation into primary mullite free silica was studied. In addition, reaction between ?-Al2O3 (in situ produced by oxidation) obtained in cristobalite structure from obtain secondary mullite. powders were milled 0.5, 3, 6, 12 hours then mixed with powder, which previously 3 hours...

This is the first of a series of five papers in which the thermodynamic properties of minerals are interpreted in terms of lattice vibrational spectra. In this paper, measured heat capacities for minerals are examined in terms of the Debye theory of lattice vibrations, and it is demonstrated that heat capacities of silicates show large deviations from the behavior expected from Debye theory. Th...

The relations between Barrovian- and Buchan-type metamorphic series in the Chinese Altai remain obscure, hence a representative region of central part was investigated to address this issue, using combined microstructural, petrological geochronological methods. In region, Barrovian-type garnet, staurolite, kyanite sillimanite zones are locally overprinted by andalusite- cordierite-bearing domai...