... 17,18 O VSMOW = [( 17,18 O/ 16 O sample )/( 17,18 O/ 16 O VSMOW ) – 1] × 1000, and as deviations from the terrestrial fractionation (TF) line, Δ 17 O. Aluminum- and magnesium-isotope compositions were measured in situ with the UH Cameca ims-1280 SIMS using protocols similar to those in Makide et...

... the sample was placed in a cuvette compartment to register the spectrum. The concentration of molecular water and hydroxyl groups bound to aluminum was calculated in accordance with the Bouguer–Lambert–Beer law in the integral form using coefficients ( Kats, 1962 ; Kronenberg, 1994 ): C ( H 2 O...

... ) The power of databases: the RRUFF project . In T. Armbruster and R.M. Danisi , Eds ., Highlights in Mineralogical Crystallography , p. 1 – 30 . De Gruyter . Lowenstein , W. ( 1954 ) The distribution of aluminum in the tetrahedra of silicates and aluminates . American...

... cell of Al-rich illite. (b) Characteristic atoms and bonds in Al-rich illite (back view). White spheres = hydrogen; red spheres = oxygen; yellow spheres = aluminium; pink spheres = silicon; purple spheres = potassium. Illite is a type of mica-like phyllosilicate clay mineral. Its name...

...Meng Liu; Wei Yin; Hao-Fan Jiang; Yu-Han Wang; Qi-Tao Hu; Tian-Lei Zhao; Qi-Zhi Yao; Sheng-Quan Fu; Gen-Tao Zhou Abstract Gallium (Ga) and aluminum (Al) belong to group IIIA elements in the periodic table. They show a coupled geochemical behavior in most natural systems and are considered...

... Mineral D TE/Fe ±Δ * D s/aq ±Δ * References Elements of iron group and aluminum Ti Magnetite (1.4 ± 0.9)·10 –2 1.6 ± 1.6 ( Tauson et al., 2015 , 2017 ; Hematite 0.4 ± 0.3 31 ± 28 Smagunov et al., 2021 ) V Magnetite 6.6 ± 3.8 540   Hematite 6.1 ± 5.9 1200...

...Victoria L. Houde; Roberta L. Flemming; Audrey Bouvier; Victor Terskikh Abstract Minerals extracted from two calcium-aluminum-rich inclusions, one each from NWA 2364 and NWA 6991 CV3 chondrite meteorites, were examined using micro X-ray diffraction, 27 Al magic angle spinning nuclear magnetic...

...Mao-Wen Yuan; Lin Li; Masroor Alam; M. Santosh; Sheng-Rong Li; Zeng-Qian Hou Abstract Quartz cathodoluminescence (CL) images are commonly combined with trace element concentrations to decipher complex histories of hydrothermal systems. However, the correlations between aluminum content and CL...

... multi-anvil apparatus at the Institute for Planetary Materials at Okayama University. Starting materials of magnesium hydroxide [Mg(OH) 2 ], enstatite [MgSiO 3 ], aluminum oxide [Al 2 O 3 ], and iron oxide [ 57 FeO] were mechanically mixed with desired weight percentages, and were then sealed into a Pt...

.../3 SiO 3 ). We examined concentrations of ferric iron and aluminum in the perovskite phase as a function of temperature (1700–2300 K) in the MgSiO 3 -FeAlO 3 -MgO system at 27 GPa using a multi-anvil high-pressure apparatus. We found a LiNbO 3 -structured phase in the quenched run product, which...

... and further cooling. Aluminum diffusion in quartz chronometry yields time scales of ~50 k.y., ~5 k.y., and ~200 k.y. for pre-, syn-, and post-ore stages, respectively. Our results highlight that the magmatic-hydrothermal system did not form ore minerals for most of its lifetime, with mineralization occurring...

... aluminum to the mobile cations of calcium, sodium, and potassium and is grounded in empirical and modeled geochemical data for mineral reactions that occur during hydrolysis. However, the CIA should be applied cautiously because it is a one-dimensional value that in the most complex situations...

... materials has therefore, received considerable attention for decades (e.g., Navrotsky and Kleppa 1967 ; Méducin et al. 2004 ). In planetary science, MAS is a significant phase ( Brearely and Jones 1998 ). It occurs as a constituent mineral in calcium-aluminum-rich inclusions (CAIs, MacPherson 2014...

...Masaki Enami; Tomoki Taguchi; Yui Kouketsu; Katsuyoshi Michibayashi; Tadao Nishiyama Abstract Aluminum-rich and Si-poor calcium amphibole [~3.9 Al atoms per formula unit (apfu) and ~5.5 Si apfu for 23 O] occur in the quartz-bearing eclogites from the Donghai area, Sulu ultrahigh-pressure...