Abstract This communication reports novel geochemical and geochronological data of granite from the southeastern part Bastar Craton, Central India. The studied samples are leucocratic in appearance composed quartz, K-feldspar, plagioclase feldspar, biotite decreasing order abundances. Apatite, sphene, zircon occur as accessory minerals. SiO2 Al2O3 content sample varies between 61 69 wt.% 13 15 ...

Ice formation on aerosol particles is a process of crucial importance to Earth's climate and the environmental sciences, but it is not understood at the molecular level. This is partly because the nature of active sites, local surface features where ice growth commences, is still unclear. Here we report direct electron-microscopic observations of deposition growth of aligned ice crystals on fel...

Ar–Ar dating of authigenic K-feldspar: Quantitative modelling of radiogenic argon-loss through subgrain boundary networks Journal Article How to cite: Mark, D. F.; Kelley, S. P.; Lee, M. R.; Parnell, J.; Sherlock, S. C. and Brown, D. J. (2008). Ar–Ar dating of authigenic K-feldspar: Quantitative modelling of radiogenic argon-loss through subgrain boundary networks. Geochimica et Cosmochimica Ac...

The wear performances of bovine tooth enamel (BTE) against translucent tetragonal zirconia polycrystals (TZP) compared to that of feldspar porcelain and the influence of surface treatments of translucent TZP were investigated by the two-body wear test. Translucent TZP and feldspar porcelain were used as hemisphere abrader specimens with a radius of curvature of 5 mm; flat BTE surfaces were used...

Preliminary results of an investigation into the possible use of glass-ceramic frits from fly ash and glass cullet in terracotta (stoneware) tile manufacture are reported. Two new ceramics were studied and compared with a plant composition, containing 45 wt.% sodium feldspar. In the first ceramic batch 20% of the feldspar was substituted by frits and in the second the whole amount of feldspar w...

Ignimbrites within calderas host intrusions with hazardous and/or economically significant hydrothermal systems. The Hvítserkur ignimbrite at Breiðuvík caldera, north-eastern Iceland, is intruded by basaltic dykes. Our data show that the immediately adjacent to dyke hard, dark-coloured, recrystallised quartz, plagioclase, and alkali feldspar a low permeability porosity frequent macrofractures. ...

Global warming is one of the main problems that facing modern civilization. As buildings consume 40% total energy, heating in cities a primary concern. Therefore, it seeks to improve sustainable construction materials with better thermal and reflective properties, reducing consumption heat islands. In this work, mineral engineered feldspars have been used as partial substitution white cement, w...

This study was carried out on granitic rocks from the Biga Peninsula in order to investigate petrographic, and mineralogical properties comparison with mechanical strength properties. conducted four different locations where outcrop north south Peninsula: Lapseki (Şevketiye granite), Ezine (Kestanbol Bayramiç (Yassıbağ Edremit (Eybek granite). Field observations detailed petrographic studies of...