Quartzite begins as metamorphic sandstone that ... of sand to fuse together and form a dense rock. While quartzite is made almost entirely of mineral quartz, additional minerals can result in ...

The “quartz-monitor” research project investigates the intrinsic chemical variations of detrital monocrystalline quartz and inclusions (mineral and melt) as an innovative sediment provenance tool. The ...

Right: OH-defects in young (0.3 Gyr) Variscan granites are one order of magnitude higher than in old (0.9-1.8 Gyr) Proterozoic granites from Scandinavia . The OH-content is reflected in recent ...

and they are usually derived from igneous and metamorphic rocks in soil (Lapidus 1987). In most soils, feldspars, micas, and quartz are the main primary mineral constituents, and pyroxenes and ...