Results 61 to 70 of about 4,934 (160)
THE ISLAND ARC FERROCORDIERITE-ALMANDINE PLAGIORHYOLITES OF THE MOUNT KASTEL, MOUNTAIN CRIMEA
Известия высших учебных заведений: Геология и разведка, 2017 Plagio rhyolites of the Pre-Late Jurassic dyke contain restitegamet (cribrate inter grow ths of almandinespessartine and quartz) and ferrocordierite. The garnets of such habit and composition and with such kind of zonality - the content of Mg increases ...
E. M. Spiridonov
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Journal of Materials Research and Technology, 2020 The most herbicide used in agriculture in many regions is atrazine, which leads to many worries as reported by its toxicity. In this, we have synthesized BaTiO3 nanoparticles through a simple method, its absorption was converted from UV region to visible
A.S. Basaleh, R.M. Mohamed
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Britholite-(Ce) from the metaluminous granite of SW Egypt
Mineralogia, 2023 Optical microscopy and scanning electron microscopy-energy dispersive X-ray spectroscopy (SEM-EDS) analyses were used to characterize britholite-(Ce) of the metaluminous granite (Proterozoic) intruded into the Nubian Formation in southwestern Egypt and ...
Hassan Kamaleldin M.
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Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.Abstract The Gyeonggi Massif is one of the major Precambrian basements in the Korean Peninsula where Paleoproterozoic orthogneiss and paragneiss were widely exposed. In this study, newly identified Rhyacian to Orosirian meta‐igneous rocks from the northwestern Gyeonggi Massif (Soyeonpyeongdo and Ganghwado areas) were investigated to elucidate their ...
Seung Hwan Lee +5 more
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The Distinction Between Sn‐Mineralized and Sn‐Barren Granites in Sn Isotopes
Geochemistry, Geophysics, Geosystems, Volume 27, Issue 9, September 2026.Abstract Tin mineralization is commonly associated with highly evolved granites. However, not all highly evolved granitic rocks are mineralized with Sn. Comparative studies of Sn‐fertile and Sn‐barren granites can deepen our understanding of the key processes that lead to Sn enrichment in magmatic‐hydrothermal systems.
Cheng Xu +5 more
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Journal of Geophysical Research: Planets, Volume 131, Issue 9, September 2026.Abstract Widespread plagioclase detections on Mars using orbital visible to near infrared (VNIR) reflectance spectra have led to multiple interpretations of “feldspathic” terrain, ranging from ancient crustal material and evolved plutons to volcanic lava flows.
Hunter Vannier +5 more
wiley +1 more source
Local phenomena in metamict titanite [PDF]
, 2010 Pure titanite is a mineral with chemical composition $CaTiSiO_{5}$. Its structure consists of corner linked $TiO_{6}$-octahedra, $SiO_{4}$-tetrahedra and sevenfold coordinated Ca positions.
Bismayer, U. +3 more
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Geostandards and Geoanalytical Research, Volume 50, Issue 3, Page 601-624, September 2026.Key Points Measurement of 86Sr at count rates < 1500 cps can result in statistical bias. Non‐linear signals in analogue detection mode (e.g., Rb) present a challenge for accurately dating high 87Rb/86Sr mica (> 1000). Accounting for these considerations, high 87Rb/86Sr mica are dated here with accuracies of ∼ 1%.
Duane C. Petts +5 more
wiley +1 more source
Elastic softening of metamict titanite CaTiSiO5: Radiation damage and annealing [PDF]
, 2011 We have measured the elastic response of radiation-damaged titanite, CaTiSiO5, as a function of thermal annealing. We estimate the bulk modulus of the damaged samples (~24% amorphous) to be 85 GPa, which is much softer than for undamaged crystalline ...
Safarik, Douglas J. +4 more
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Room‐Temperature Antiferroelectricity in Titanite (CaTiSiO5) Thin Films
Advanced Electronic MaterialsTitanite (CaTiSiO5) has long been considered a promising lead–free antiferroelectric material characterized by the antiparallel displacement of Ti atoms within adjacent 1D oxygen octahedral chains.
Weirong Yang +3 more
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