The solubility of α-GaOOH was measured in low ionic strength (0.025 M) HClNaCl solutions over the pH range 1.6–4.1 at 150, 200, and 250°C. A least squares linear regression of these data was used to determine the dissociation ...

Results derived from gamma-ray spectrometry studies of volcanic rocks in a depth interval of 3540-8150 m are presented. The rocks are shown to have low concentrations of radioactive elements, which is consistent with the ...

Melting experiments of a representative mantle composition doped with some key trace elements were conducted under hydrous conditions at pressures to 20 GPa. The results demonstrate that only ~5-25% of garnet fractionation ...

Finds of garnet peridotite xenoliths in Cenozoic volcanics are fairly rare. Until recently, only three such finds were known on the Vitim plateau, in Pliocene rocks of the Kandiduskha and the Yasha paleo-volcanoes. We give ...

Detailed 3-D analysis of inclusion trails in garnet porphyroblasts and matrix foliations preserved around a hand-sample scale, tight, upright fold has revealed a complex deformation history. The fold, dominated by interlayered ...

Clinozoisite gneisses were studied from the Barchi-Kol area, located 17 km to the west of the Kumdy-Kol microdiamond deposit at Kokchetav massif (Northern Kazakhstan). As distinct from the deposit, the studied rocks are ...

Experiments in the FMASCr system at pressures of 30-50 kbar and temperatures of 1200-1500°C model mineral equilibria in depleted mantle harzburgite. Special emphasis was on the partitioning of chromium between garnet, ...

Outcrops on the left bank of the Yenisey River expose banded gabbro, gabbro-norite and norite in the western part of this pluton near its floor. In isolated places these rocks were converted by high-pressure metamorphism ...

A new GC-Pyrolysis-IRMS method was developed for the δ13C determination of carboxyl carbon in low-molecular weight organic acids. By utilizing a palladium-wire reactor at 600<space>°C with a helium/hydrogen reactant gas, ...