... the different behavior of these minerals under shearing stress. The normal metadolerite has 58 per cent salic, and 42 per cent femic minerals. An analyzed dark layer of the mylonite has 60 per cent femic minerals, whereas an analyzed light layer shows 86 per cent salic minerals. Pneumatolytic alteration...

....%, X av = 14.21 wt.%), K 2 O (1.44–3.23 wt.%, X av = 2.11 wt.%) and femic elements ( Fig. 5 , Suppl. Mat., Table S1). On binary Harker diagrams, the composition regions of Permian–Triassic and Jurassic terrigenous rocks do not differ ( Fig. 5 ). On the F. Pettijohn classification diagram...

...: highly magnesian, with high contents of Si and K and low content of Mn, and lowly magnesian, with low contents of Si and K and high content of Mn. Ilmenite, titanomagnetite, and fine grains of femic minerals are mostly of mixed varying composition. The chemical composition of rock-forming minerals...

... are confirmed by results of modeling of equilibrium gabbroid crystallization. The crystallization of parental basic melt was accompanied by the accumulation of SiO 2 , Al 2 O 3 , alkalies, and Cl and depletion in femic components. The melt evolved to granodiorite and alkali-syenite compositions. Compared...

... composition”, but thus far he had not adequately discussed its necessity. 33 In that same section Cross recommended introducing the terms salic and femic just after they established their Primary Groups I and II. 34 Then, he suggested, the draft should point out that although “the vast majority...

... inclusions in olivine homogenize at T >> 1250 °C, apatite-hosted – at 1220–1230 °C, diopside-hosted – at 1160–1205 °C, and phlogopite-hosted inclusions – at 1085–1210 °C. Trapping pressure of inclusions during crystallization of olivine-2 does not exceed 2 kbar. The phase composition of inclusions...

...M. Stone; J. Klominsky; G. S. Rajpoot Abstract Trioctahedral micas in the Karlovy Vary pluton range in composition from Fe-biotites in the granites of the Older Intrusive Complex (OIC) through siderophyllite and lithian siderophyllite to zinnwaldite in the granites of the Younger Intrusive Complex...

...Jonathan Icenhower; David London Abstract H 2 O-saturated experiments with synthetic metapelite compositions (muscovite-quartz-albite and muscovite-quartz-albite-biotite ± aluminum silicate ± cordierite) performed over the temperature interval of 600–750 °C at 200 MPa (H 2 O) reveal that partial...

...) for the enclosing sediments. The chemical and mineralogical composition, the latter obtained through a multianalytical approach combining X-ray powder diffraction (Rietveld- RIR method) with thermal analyses coupled with evolved gas mass spectrometry, revealed large amounts of Ba-rich phillipsite, baryte, volcanic...

... are occasionally observed. Granites in these bands are enriched with femic minerals, and locally their composition becomes more mafic. Unlike granites, gabbroids bear strong evidence of reaction with granitic magma. This is apparent from numerous light-colored patches and bands, which often extend into gabbroid...

...), and alkalies (Na 2 O + K 2 O to 10–12) and decrease in femic components, which in total did not exceed a few per cent (see Fig. 2 ). This way of transformation is common for Bowen’s scheme of crystallization of basalt melts [ 6 , 8 ]. The appearance of glass with rhyolite-dacite composition (slightly...

... explained if the possibility of intrusion of compositionally inhomogeneous melts into vein-hosting cavities is accepted. The observed dispersion of the compositions of veined bodies is, in the authors’ opinion, caused by the influence of one or several factors providing first of all “flashing” of alkalis...

... ) values are found to vary between 8.7 and 24.5 °C kbar −1 (87 and 245 °C GPa −1 ). There are some indications of effects on solidus temperatures and conductivity values which are related to variations in chemical composition, especially Si, Al, and Fe concentrations. The conductivity decreases...

...-fractionation of a K-poor calc-alkaline magma of intermediate composition. Relatively low Rb and Rb/Sr values, and high K/Rb ratios are consistent with Sr isotopic ratios that suggest a subcrustal source region for the generation of the magma, probably by partial melting of subducted oceanic crust at relatively...