Mineralogy and Petrology
Papers 3384
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#1Francesca Castorina (Sapienza University of Rome)H-Index: 16
#2A. Magganas (UoA: National and Kapodistrian University of Athens)H-Index: 8
Last.Konstantinos Kyriakopoulos (UoA: National and Kapodistrian University of Athens)H-Index: 8
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Geochemistry and Sr-Nd isotopes were determined in Triassic calcalkaline metalava and metapyroclastic rocks from Attica and Argolida, central Greece, to ascertain their origin, evolution, and emplacement timing. Sample protoliths were lavas, tuffs, and, subordinately, tuffites of basaltic to rhyolitic composition. Despite up to low-grade hydrothermal metamorphism, samples retain primary structures and geochemical characteristics; in particular, relatively high (La/Lu) chondrite-normalized ratios...
#1Wenjing Xu (SYSU: Sun Yat-sen University)
#2Xisheng Xu (NU: Nanjing University)H-Index: 24
Last.Matthew J. Brzozowski (NU: Nanjing University)
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Understanding the mechanisms responsible for the interplay between mafic and felsic magmas is the key to retrieving information on their sources, and characterizing the exchange of mass between them. In order to characterize compositional and mineralogical changes in the mafic end-member during mafic-felsic magma interaction and to better understand the nature of early Paleozoic intracontinental magmatism in the South China Block (SCB), a detailed study was conducted on an early Paleozoic hornbl...
We report olivine chemistry in basaltic rocks from the Mt. Cameroon Volcanic area, which is used as a proxy to understand mantle and early igneous processes along the ocean-continent segment of the Cameroon Volcanic Line. Most primitive olivine phenocrysts in this study have forsterite contents of 86–87.5%. Their Li concentrations are below 3.5 ppm and occur in similar concentrations in all the samples. Ni has a large range in concentration, with some values as low as 742 ppm and others as high ...
#1Zohreh Alaminia (Kharazmi University)
#2Behzad Mehrabi (Kharazmi University)H-Index: 12
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The Ghorveh-Seranjic (GS) skarn is located in the northern part of the Sanandaj-Sirjan zone, NW Iran, which is part of Alpine-Himalaya orogenic belt. The GS metamorphic complex is the oldest unit in the GS area composed of marble, dolomitic marble, greenschist, and amphibolite of Early Jurassic age. The complex is intruded by NW-SE trending Late Jurassic peraluminous granitoids, which caused contact metamorphism and resulted in the development of skarn, hornfels and crystallization of marble. Th...
#1Junshan Xu (CEA: China Earthquake Administration)H-Index: 4
#2Baohua Zhang (CAS: Chinese Academy of Sciences)H-Index: 29
Water solubility in Mg-endmember silicates is suggested to correlate with cation diffusivity. This study proposes a thermodynamic model by introducing the concept of transient Frenkel defect for Mg ions to quantify the relationship between water solubility and Mg diffusivity in mantle silicates. The formation of the Mg transient Frenkel defect is regarded as the escape of Mg from Mg-O polyhedron, and the concentration of Mg transient vacancy is considered as its statistical probability in silica...
#1Biswajit Hazarika (RTMNU: Rashtrasant Tukadoji Maharaj Nagpur University)
#2D. B. Malpe (RTMNU: Rashtrasant Tukadoji Maharaj Nagpur University)H-Index: 3
Last.Ashish Dongre (Savitribai Phule Pune University)H-Index: 9
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We report mineral compositions and bulk rock geochemistry of mafic dykes intruded in the western part of Bastar craton, comprising of Archaean Amgaon Group and Proterozoic Dongargarh Supergroup of rocks. Field relations show two distinct trends of these dykes which are almost perpendicular to each other but having similar mineralogical and geochemical characteristics. Dykes are mostly composed of pyroxenes, plagioclase and subordinate amount of amphiboles and Fe-Ti oxides (magnetite and ilmenite...
#1Xin-Miao Zhao (CAS: Chinese Academy of Sciences)H-Index: 9
#2Hui Wang (CAS: Chinese Academy of Sciences)
Last.ZHANGHongfu (CAS: Chinese Academy of Sciences)H-Index: 46
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#1Nikita V. Chukanov (RAS: Russian Academy of Sciences)H-Index: 16
#2Natalia V. Zubkova (MSU: Moscow State University)H-Index: 14
Last.Sergey N. Britvin (SPbU: Saint Petersburg State University)H-Index: 12
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This paper describes specific features of isomorphism of unusual amphiboles containing up to 23 wt% ZnO and up to 1.3 wt% CuO from sulfide-free metasomatic rocks of the “Mixed Series” metamorphic complex, Pelagonian Massif, Republic of North Macedonia, in which chalcophile elements (Pb, Cu, Zn, Sb, As) occur in high concentrations in the form of oxides and oxysalts. The studied amphiboles belong to six mineral species: magnesio-riebeckite, ferri-winchite, F-dominant analogue of ferri-winchite (“...
#1Roman Schuster (University of Vienna)H-Index: 1
#2Gerlinde Habler (University of Vienna)H-Index: 13
Last.Rainer Abart (University of Vienna)H-Index: 20
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Polycrystalline calcite was deformed to high strain at room-temperature and confining pressures of 1–4 GPa using high-pressure torsion. The high confining pressure suppresses brittle failure and allows for shear strains >100. The post-deformation microstructures show inter- and intragranular cataclastic deformation and a high density of mechanical e\( \left\{01\overline{1}8\right\} \) twins and deformation lamellae in highly strained porphyroclasts. The morphologies of the twins resemble twin mo...
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