Formation of Polyorganosiloxanes from Silicate Minerals

Do Silicate Minerals Stabilize Ribose as well ?

Investigation of chemistry and the style of formation of calc-silicate minerals in Aghbolagh skarn zone, north of Oshnavieh, West-Azarbaidjan Province, NW Iran

The Aghbolagh area is located about 21 km north of Oshnavieh city, West-Azarbaidjan Province, NW Iran. This study showed that the Fe-Cu skarn deposit in this area can be separated into two zones, (1) Garnet skarn and (2) Garnet-pyroxene skarn. Based upon the results of electron probe micro-analysis, the garnets are chemically of andradite-grossularite type with dominant andraditic component. Th...

The Silica Tetrahedron and the Architecture of Silicate Minerals

With oxygen and silicon comprising approximately 85% of the atoms in Earth’s crust, most minerals in the crust include these two elements, and form the class of minerals called silicates. The basic building block of all silicate minerals is the silica tetrahedron, in which one silicon ion bonds with four oxygen ions. This arrangement of ions (coordination number of 4) is dictated by the ratio o...

The Oxidation State of Iron in Silicate Minerals from the Matrices of Co Carbonaceous Chondrites

Accretion and core formation: constraints from metal-silicate partitioning.

Experimental metal-silicate partitioning data for Ni, Co, V, Cr, Nb, Mn, Si and W were used to investigate the geochemical consequences of a range of models for accretion and core formation on Earth. The starting assumptions were chondritic ratios of refractory elements in the Earth and the segregation of metal at the bottom of a magma ocean, which deepened as the planet grew and which had, at ...