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Glassy orthopyroxene granodiorite-tonalite (named pincinite after type locality) was described from basaltic lapilli tuffs of the Pliocene maar near Pincina village in the Slovakian part of the Pannonian Basin. Two pincinite types exhibit a qualitatively similar mineral composition (quartz, [An.sub.20-55] plagioclase, intergranular silicic glass with orthopyroxene and ilmenite, [+ or -] K-feldspar), but strongly different redox potential and formation PT conditions. Peraluminous pincinite is reduced (6-7% of total iron as [Fe.sup.3+] in corundum-normative intergranular dacitic glass) and contains ilmenite with 8-10 mol% [Fe.sub.2][O.sub.3] and orthopyroxene dominated by ferrosilite. High-density (up to 0.85 g/ [cm.sup.3]) primary C[O.sub.2] inclusions with minor [H.sub.2], C[H.sub.4], [H.sub.2]S, CO and [N.sub.2] (< 2 mol% total) are present in Qtz and Plg. Equilibrium PT conditions inferred from the intergranular Opx-Ilm-Glass assemblage and fluid density correspond to 1,170 [+ or -] 50[degrees]C, 5.6 [+ or -] 0.4 kbar, respectively. Metaluminous pincinite is more oxidised (25-27% of total iron as [Fe.sup.3+] in diopside-normative intergranular glass of rhyolite-trachyte-dacite composition) and contains [Fe.sub.2][O.sub.3]-rich ilmenite (17-29 mol%) associated with enstatite. Fluid inclusions are composed of C[O.sub.2]-[H.sub.2]O mixtures with up to 38 mol% [H.sub.2]O. Raman spectroscopy revealed [H.sub.2]S along with dominant C[O.sub.2] in the carbonic phase. Equilibrium PT parameters for the intergranular Opx-Ilm-Glass assemblage correspond to 740 [+ or -] 15[degrees]C, 2.8 [+ or -] 0.1 kbar, respectively. Reducing gas species ( 0.705-0.706, [[delta].sup.18]O > 9% V-SMOW) around alkali basalt reservoir in depths between 17 and 20 km, and around late stage derivatives of the basalt fractionation, intruding the crust up to depths of 10-11 km. Low water activity in the pincinite parental melt was caused by C[O.sub.2]-flux from the Tertiary basaltic reservoirs and intrusions. The anatexis leads to generation of a melt-depleted granulitic crust beneath the Pannonian Basin, and the pincinites are interpreted as equivalents of igneous charnockites and enderbites quenched at temperatures above solidus and unaffected by sub-solidus re-equilibration and metamorphic overprint.

Dispersed quartz veinlets in Proterozolc enderbitic charnockite from Tromoy, Bamble sector (southern Norway), with Ti-concentrations of mostly 80-180 ppm, produce bright blue cathodoluminescence (CL), against contrasting micro-textures of secondary pure quartz with low CL intensity. The textures comprise grain boundary alteration, healed micro-fractures, patches of secondary quartz, and euhedral quartz nuclei. The secondary quartz locally makes up 50% of the total quartz. Trace element analysis has been done by electronprobe micro-analysis (EPMA), laser-induced coupled plasma mass spectrometry (LA-ICPMS), and additional electron-paramagnetic resonance (EPR) spectroscopy. These studies testify systematic trace element reduction and extensive quartz recovery during retrograde metamorphism. We assume healing of a part of the aqueous fluid inclusions during a late thermal event, possible correlated with Paleozoic magmatic activity in the Oslo-Rift. During final cooling, aqueous fluids were largely retrapped in patches of secondary quartz associated with healed fractures, whereas carbonic inclusions (without secondary quartz) may have survived retrograde metamorphism. The variable but generally high salinity of fluid inclusions is assumed to be in part the result of quartz recovery by which ion concentrations were increased in the percentage range.