Introduction: Magmatic inclusions in Martian meteorites contain some hydrous minerals such as kaersutites [e.g., 1-2]. The characteristic of Martian kaersutites is their water-poor [3] and Ti-rich (~10 wt%) compositions. The presence of kaersutite gives evidence that Martian parent magma contained water. In fact, several attempts have been performed to estimate the water content in Martian magm...

Abstract Experiments were conducted to test the hypothesis that interaction of a carbonatitic magma with quartz-rich rocks plays key role in shaping carbonatite complexes. The host represented by quartz, and was synthetic mixtures CaCO3, MgCO3, Na2CO3. With increasing distance from reaction between carbonate liquid quartz produced domain Na(Ca)-rich silicate glass, metasomatic wollastonite, dio...

This paper is the fourth in a series relating the lattice vibrational properties to the thermodynamic properties of minerals. The temperature dependence of the harmonic lattice heat capacity is calculated from a model which uses only elastic, crystallographic, and spectroscopic data for the following minerals: calcite, zircon, forsterite, grossular, pyrope, almandine, spessartine, andradite, ky...

The possible structure types derived from the Pbca-orthopyroxene are shown. There are sixteen space groups, as subgroups of Pbca, without destroying the original unit-cell type setting. Five structure types have two kinds of tetrahedral chain, nine types have four kinds of tetrahedral chain and two types have eight kinds of tetrahedral chain, respectively. Introduction Since the first structure...

The Ma&tan alnijite contains a rich and varied megacryst suite of unprecedented compositional range. We have undertaken trace element and isotope modeling in order to formulate a petrogenetic scheme which links the host alniiite to its entrained megacrysts. This requires that a proto-alntiite magma is the product of zone refining initiated by diapiric upwelling (where the initial melt passes th...

Chiral crystal surfaces lack mirror or glide plane symmetry. Nevertheless, some chiral surfaces deviate more significantly from an achiral configuration, and thus possess greater enantioselective potential, than others. We describe a procedure to calculate chiral indices, IC (in Å), of any two-dimensional (2D) periodic atomic surface based on atomic displacements from ideal mirror or glide plan...

An overview of different types mineralization in the area Urdini Lakes and glacial valley Urdina River (northwestern Rila Mountain) has been made. Currently, it is only protected for minerals Bulgaria. In this area, mainly pegmatite, but also skarn alpine-type mineralizations, have found to date. Of particular interest are hybrid desilicified type pegmatites containing emerald, aquamarine chrys...