منابع مشابه
International Union of Pure and Applied Chemistry Analytical Chemistry Division Commission on Radiochemistry and Nuclear Techniques* Critical Review of Analytical Applications of Mössbauer Spectroscopy Illustrated by Mineralogical and Geological Examples
We have developed a new terminology for Mössbauer pattern analysis in order to enhance the performance of qualitative analysis by Mössbauer spectroscopy. In this approach, Mössbauer parameters are considered as a function of a number of externally adjusted experimental parameters at which the spectrum has been recorded. The basis of analytical classification is the microenvironment, which is de...
متن کاملMineralogical Magazine
Tile crystal structures of sjogrenite and pyroaurite, two stacking modifications of approximate composition Mg.Fe.(OH),.(CO.).4H.O, have been determined by X-ray diffraction using three-dimensional methods. Sjogrenite is hexagonal, with a 3,13, C 15.66 A, space group P6.!mmc, Z = !; pyroaurite is rhombohedral, with aH 3,13, CH 23.49 A, space group R3m or R3m, Z = i. Both structures are based on...
متن کاملGeological setting of iron oxide-apatite deposits in theBafq district, central Iran with an emphasis on mineralogical,petrographic, and geochemical study of the Sechahun deposit
The objective of this research is to determine all processes in the magmatic evolution and related hydrothermal activities that created the volcanic rocks and associated ore-forming systems of the Bafq mining district. Several iron oxide-apatite (IOA) deposits were investigated in this area with a focus on the Sechahun ore deposit. The Bafq mining district is well known for hosting significan...
متن کاملcompiling data from geological, mineralogical and geophysical (ip/rs) studies on mahour deposit, northwest of deh-salm, lut block
introduction the mahour exploration area is a polymetallic system containing copper, zinc and silver. the mineralization can be seen in two forms of veins and disseminations. this area is structurally within the lut block, west of deh-salm village. recent exploration work and studies carried out by geologists on this volcanic-plutonic area of lut demonstate its importance indicating new reserve...
متن کاملEvaluation of stream chemistry trends in US Geological Survey reference watersheds, 1970-2010.
The Hydrologic Benchmark Network (HBN) is a long-term monitoring program established by the US Geological Survey in the 1960s to track changes in the streamflow and stream chemistry in undeveloped watersheds across the USA. Trends in stream chemistry were tested at 15 HBN stations over two periods (1970-2010 and 1990-2010) using the parametric Load Estimator (LOADEST) model and the nonparametri...
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ژورنال
عنوان ژورنال: Journal of the American Chemical Society
سال: 1903
ISSN: 0002-7863,1520-5126
DOI: 10.1021/ja02010a024