It has been well established that fluids played an important part in determining chemical characteristics in many crustal terranes. Studies of fluid inclusions in eclogites have established that brines coexisted with the primary mineral assemblages during their metamorphic crystallization. These brines are currently multiply saturated in halide salts, carbonates, oxides, and sulfides. As a firs...

The study area is a part of so-called Sanandaj-Sirjan zone or Zagros imbricate zone of the Zagros Orogen, Iran. The Hamedan region comprises a metamorphic sequence of low- to high-grade regional and contact metamorphic rocks intruded by mafic, intermediate and felsic plutonic bodies. The sequence comprises pelitic, psammitic, mafic, calc-pelitic and calc-silicate rocks.  Pelitic rocks are the m...

The solubility of the assemblage corundum + kyanite in H2O was determined at 700 C and 10 kbar, using a piston-cylinder apparatus and rapid-quench/fluid-extraction techniques. Weighted mean concentrations of total Al and Si were 5.80 ± 0.03 mmol kg H2O and 0.308 ± 0.003 mol kg )1 H2O, respectively (1r errors). The Al concentration is nearly five times higher than that of corundum solubility in ...

Various metacarbonate and associated calc-silicate rocks form minor but genetically significant components of the lithological units in Bohemian Massif Variscan orogen Central Europe. These vary terms their lithostratigraphy, chemical composition mineral assemblage (dolomite/calcite ratio, silicate abundance). Tourmaline is present five paragenetic settings within units. Type I comprises indivi...