Anhydrous sulfate minerals are abundant in the active fumaroles with highly oxidizing conditions on scoria cones of Tolbachik volcano. The mineral itelmenite, ideally Na2CuMg2(SO4)4, containing isomorphous admixture Zn, was described 2018, whereas glikinite, Zn3O(SO4)2, 2020. Synthetic analogs both were obtained during studies phase formation Na2SO4–CuSO4–MgSO4–(ZnSO4) systems which lead to ess...

A synthesis of the biogeochemistry of S was done during 34 yr (1964–1965 to 1997–1998) in reference and human-manipulated forest ecosystems of the Hubbard Brook Experimental Forest (HBEF), NH. There have been significant declines in concentration (−0.44 mol/liter-yr) and input (−5.44 mol/ha-yr) of SO4 2− in atmospheric bulk wet deposition, and in concentration (−0.64 mol/liter-yr) an d output (...

The mineral surface structure and ions’ interaction were of significant interest to understanding dissolution reaction. In this study, X-ray photoemission spectroscopy combined with ICP emission spectrometer was used investigate the influence leaching reaction conditions 8 M dilute sulfuric acid 12 concentrated on chemical composition, (valence) state ion distribution Columbite-(Fe) (FeNb2O6). ...

Borosulfates are an expanding class of silicate-analogous materials. We report the syntheses and crystal structures two unconventional cadmium borosulfates. Cd[B2O(SO4)3] crystallises in a new structure type space group Pnma (no. 62, a=896.92(8), b=1152.0(1), c=872.75(8) pm, 1380 refl., 94 ref. param., wR2=0.112). Cd4[B2O(SO4)6] adapts α-Mg4[B2O(SO4)6]-type with P 147, a=822.22(4), c=797.88(5) ...

Background (Ba,Sr)SO4 solid-solutions range among the most important scaling minerals, not only in geothermal energy production, but generally in applications involving hydrothermal brines, e.g. including petroleum production [e.g. (Todd and Yuan 1990, 1992; Kühn et al. 1997)]. Besides the general difficulties related to scale formation, like blockage of pipes, related decrease of well producti...

SYNTHETIC Fe, Fe, Mg , Al COPIAPITES. W. G. Kong , Alian Wang, J. J. Freeman, P. S. Sobron, Dept Earth and Planetary Sciences and McDonnell Center for Space Sciences, Washington University, St. Louis, MO, 63130 USA ([email protected]), 2 School of Space Science and Physics, Shandong University, Weihai, 264200, China. Introduction: Sulfates were found on Mars by spectrometers on orbiters (O...

[1] Sulfate in acid rain is known to suppress methane (CH4) emissions from natural freshwater wetlands. Here we examine the possibility that CH4 emissions from rice agriculture may be similarly affected by acid rain, a major and increasing pollution problem in Asia. Our findings suggest that acid rain rates of SO4 2 deposition may help to reduce CH4 emissions from rice agriculture. Emissions fr...