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The chemical and mineralogical composition of fireworm chaetae was examined applying crystal-chemical methods. The data gathered provide insights into the structure and composition of the amphinomid chaetae, leading to critical hypotheses on their role in fireworm stinging capacities and hence ecological success. 2. Materials …
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Bulk chlorine composition data from all altered oceanic crust samples in this study average 167 ± 20 ppm Cl (assuming that samples with < 0.01 wt.% Cl contain 20 ppm Cl). A weighted average assuming that extrusive lavas comprise 1 km, sheeted dikes 1.1 km, and gabbros 4.25 km (e.g., Staudigel, 2003) yields 207 ppm Cl.
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Mineralogical and geochemical composition of the early carboniferous Li-enriched coals of the Zhaotong coalfield, Northeast Yunnan, China ... with a step size of 0.01°. X-ray diffractograms of the LTAs and non-coal samples were subjected to quantitative mineralogical analysis using Siroquant™, commercial interpretation software developed …
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Some observations on the chemical composition of todorokite - Volume 50 Issue 356. ... Journal of the mineralogical society of korea, Vol. 32, Issue. 3, p. 151. CrossRef; Google Scholar; Download full list. Google Scholar Citations. View all Google Scholar citations for this article.
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mineralogical studies on rocks of the Salt Range (e.g. Ghazi et al. 2004, 2006, 2014a, b), very few were focused on establishing correlations between mineralogical com-position and mechanical behaviour of these rocks. Petro-graphic and physical properties of Sakesar Limestone of the Central Range have been investigated on a limited
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Mineralogical composition of and trace-element accumulation in lower Toarcian anoxic sediments: a case study from the Bilong Co. oil shale, eastern Tethys ... Mineralogical and geochemical data show that seawater and hydrothermal activities are the dominant influences on the mineralogical composition and elevated trace-element …
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Mineralogical Magazine; December 1994 v. 58; no. 393; p. 695-696; DOI: 10.1180/minmag.1994.058.393.23 © 1994, The Mineralogical Society Mineralogical Society (
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mineralogical composition in mortars produced from limestone samples collecte d in different a r- eas of Mozambique, using two c ement types (Portland cemen t 32.5N and 42.5N). Additio ns of 10 to
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The Gulf of Carpentaria is an epicontinental sea, deeply indented in the north of the Australian continent. A selection of 100 samples of the surficial marine sediments collected on a regional grid were analysed for major chemical elements and mineral phases using wet chemistry, X-ray diffraction, optical and electronic microscopy.
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X-ray diffraction (XRD) was used to determine the clay mineralogical composition of 407 soil samples (Li et al., 2015); these soil samples were selected to be representative of the characteristics of soil EK concentration and geographical position (latitude and longitude) of the 1985 soil samples by method of sample set partitioning …
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The nature of aggregates has an important influence on the behaviour of concrete at high temperature. The aggregates used in concrete are classified into two categories: siliceous (S) and calcareous (C). Most publications and Eurocode 2 Part 1–2 underline concrete containing C aggregates have a better thermal resistance in …
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The complexities of chemical composition and crystal structure are fundamental characteristics of minerals that have high relevance to the understanding of their stability, occurrence and evolution. This review …
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this aerosol. The mineral composition, with distinct refrac-tive indices for each mineral, is also a way to have more confidence when comparing observed and modelled aerosol optical depth (AOD). In this study, we present the implementation of the min-eralogical composition of mineral dust in the CHIMERE re-gional chemistry-transport model.
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The mineralogical composition and quality measures of all aggregates are estimated from XRD analysis and summarized in Table 10. The table also shows the mineralogical compositions of typical pure limestone and dolomite rocks for comparison purpose. The XRD results indicated that the limestone samples were mostly crystalline …
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This paper attempts to evaluate the mineralogical and chemical composition of sedimentary limestone mine waste alongside its mineral carbonation potential. The limestone mine wastes were recovered as the waste materials after mining and crushing processes and were analyzed for mineral, major and trace metal elements. …
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Each identified particle was analyzed by Energy Dispersive X-ray Spectroscopy (EDXS) to determine its elemental composition. To obtain the mineralogical composition of classified groups, the stoichiometric ratios were calculated from the atomic percentages given by the EDXS analysis, and were then compared with …
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The mineralogical composition of particles smaller than 1.0 μm, in both soil types, was dominated by chlorite (Al-Si-O-Mg), kaolinite (Ai-Si-O), and quartz (Si O). Gypsum (Ca S) and halite (Na Cl) were the major salt components in particles from both soil types. Gypsum-containing particles existed in a wide size range and occupied …
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In the mineralogical composition analysis, specific mineral contents of quartz, feldspar, dolomite, calcite, and clay were identified. To quantify the rock strength, the uniaxial compression test was used in this research due to its wide application in laboratory tests. Each mineral content effect on the uniaxial compressive strength was ...
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Abstract. Petrographic and mechanical properties of early Eocene Sakesar limestone have been investigated to establish the relationship between these …
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The Sr isotope composition of harzburgites is taken from Bodinier and Godard (2014 in Figure 21; 87 Sr/ 86 Sr of 0.7025; 2014). Thus, average sediment melt components are more radiogenic in their Sr isotope composition and heavier in their Ti isotope composition than the boninitic melt source component.
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Soil mineralogy aims to study and understand the soil mineral phase, which makes up about 90% of the solid volume of mineral soils. This scientific discipline encompasses a diverse range of topics including: (i) the occurrence and distribution of soil mineral materials, (ii) their chemical composition, and crystallographic properties, (iii) …
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This study focuses on the mineralogical and elemental composition of coal seams cored in seven (AK-20, D-11, R-27, R-61, R-88, R-138, and R-257) coal exploration boreholes drilled in the Alpu coalfield. The specific purpose of this study is to check applicable of Cosine similarity as an appropriate and reliable similarity measure for ...
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Model predictions of dust mineralogical composition and its effect on climate are highly uncertain. The authors implemented two mineralogical data sets to a global atmospheric chemistry model. They evaluated the model results against observations of dust mineralogy. They conducted sensitivity experiments to assess the impact of the …
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4. The Shullsburg Mine tailings mound prior to reclamation. The early mills used mechanical sepa- sive exploration programs, opened new ration methods such as shaker tables to mines, and expanded ...
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Studies of the mineralogical composition of finely-dispersed fractions of soil-forming rocks and soils have shown that in cold climates, the mechanical disintegration of minerals prevails (Chizhikova et al., 2000, Fedorets, 2009). The result of this process is a thin silt component in soils that consists of the finest quartz and feldspar ...
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Although the Loma de Hierro deposit (Venezuela) has been in operation for more than 50 years, it lacks detailed studies on the mineralogical and geochemical composition of the lateritic profile.
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Summary and conclusions. A study was conducted to investigate the influence of mineralogical and chemical composition of 26 dolomitic limestone …
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The aim of this paper is to introduce a method that determines the mineralogical composition of suspended sediment in continental waters. This method involves a simple sampling protocol combined with the robustness of powerful statistical techniques, making it an ideal tool for processing a significant amount of water samples …
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The effects of aggregate mineralogical composition on moisture sensitivity of aggregate–bitumen bonds were investigated using four aggregate types (two limestone and two granite) and two bitumen grades (40/60 pen and 70/100 pen). Moisture sensitivity (or water resistance) of the aggregate–bitumen bonds were characterized using retained ...
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Correlation among these values allowed developing equations for prediction of mechanical behaviour from mineralogical composition of Sakesar Limestone with more than 95% accuracy.
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