Kaolinite

and according to Lambe and Whitman (1979) close to the specific gravity of pure kaolinite (2.62 to 2.66). The bulk density value of 1.44 is also measured to the pure kaolinite sample (BHR-0054). Based on mineralogical and major element compositions, Belessa kaolin can be distributed in to two. The pure kaolinite with higher alumina content and the one with lesser alumina content which is composed of kaolinite and quartz. For pure kaolinite sample, the ratio for SiO2/Al2O3 concentration show 1.24 which according to Ekosse, (2001) is close to ratio of the ideal kaolinite (1.18). Compared to the commercial world kaolin deposits (Georgia and Cornwall), the kaolin sample with pure kaolinite has quite comparable chemical compositions with only lower Fe2O3 and MgO and higher P2O5 (table 5.2). Whereas, kaolin samples with less kaolinite shows Fe2O3 content a bit higher than the maximum allowed limit of 1 % Fe2O3 (Highley, 1984). Moreover, samples with low kaolinite mineral also show low alumina and high Fe2O3 due to entrance of Fe in to kaolinite structure and replacement of Al in the octahedral layer (Murray and keller, 1993). Most kaolin samples also show lower concentration of Fe2O3 and TiO2 contents which increases their practical applications. The specifications related to the geochemical data are more important when kaolin is used for industries like ceramic, fiber glass and refractory. The kaolinite rich sample (BHR-0054) shows major oxide values that are acceptable to the…

ABSTRACT: Terpolymer / kaolinite microcomposites were synthesized by 2:2:1 molar ratio of aniline, anthranilic acid and o-phenylenediamine monomers, respectively using various percentages of kaolinite clay via modified in situ oxidative ter-polymerization. The results were confirmed by FT-IR and UV-Vis absorption spectra of terpolymers / kaolinite composites. The thermal behaviour of the terpolymer and composites was studied. Terpolymers / kaolinite composites were thermally more stable than…

For kaolinite, isomorphous substitution is not expected due to it’s structure properties. For the fine-mica fraction, it can be expected that at least 20% of Si4+ is replaced with Al3+ in the tetrahedral sheet. With 1:1 clays having a c) Organic colloids have typical range between 200-350 cmol kg-1 depending on the pH of the soil. With increasing alkalinity, the net negative charge, or CEC goes up. Organics are 90% pH dependent. Smectites have around a 100 cmol kg-1 and are 5% pH dependent.…

landform-maps were derived from gamma-ray spectrometry data by Wilford et al. (1997) and Wilford et al. (2007). Gamma ray spectrometry was one of the parameters used during continental-scale regolith depth estimation (Wilford et al., 2016) Landsat imagery is routinely employed in regolith mapping (Craig et al., 1999) including directed principal component analysis (DPCA), which is used to enhance the response of clay minerals and suppress the effects of vegetation (Fraser and Green, 1987).…

A small portion of the sample is usually taken and qualitatively analyzed using energy-dispersive X-ray fluorescence with a microprobe. This analysis reveals some key information, such as the origin of samples. For example, the analysis of filling material from the sarcophagus of Queen Hatshepsut and King Thutmose I revealed a red paint-like material. Analysis showed that the sample was mostly organic in nature and no inorganic materials (except for small amounts of calcium carbonate).…

other companies and factories will gain the market, as a strategy to exploit people's need for clean drinking water they will raise the price of the bottled water. Also, because of the diseases, the country will need to spend more money on health care [5]. The harms are not stoppable, but we have the ability to control it and decrease it. Developed countries are trying the alternative methods to get rid of human chemical waste. But there are some ways to clean the water such as using natural…

different forms, and can be developed for several different reasons; moreover, in some areas Pica is even considered normal and is sometimes used medically. Compton believes that Pica “is rare and occurs most often in infants and young children . . . 18 to 24 months old. Pica is more likely if a child has other developmental delays, . . . [and it] typically lasts for just a few months, . . . [but it] may last longer in a child who has developmental problems (Compton). Faith Brynie, PhD, notes…

eroding away along with the gneiss and granite in north central Minnesota. This erosion created a lot of quartz, which was eventually turned into quartz sandstone (Ojakangas, and Matsch 1982). These quartz sandstones are the Sioux Quartzite of southwestern Minnesota, the Nopeming quartzite of the Duluth area, and the Puckwunge formation of north-easternmost Minnesota. In other parts of the state, you would have seen a Mid-Continent Rift Forming. The Sioux Quartzite is somewhere between 1.7…

aims to provide information on mineral chemistry and colour attribution in petrified wood. The results of this study will provide a better understanding of silicified wood identification for the use in mineralogy and gemmology. 2. Background on the mineralogical composition of petrified woods A diverse suite of minerals and phases have been found in petrified woods from all over the world. The common species found range from pure opal to pure quartz whereas others include calcite, dolomite,…

operates on genes, is more or less accepted as a possible vision the manner in which evolution works. It has even become part of official science, teaching in schools. For some, even the orthodox version of the theory of evolution. This does not mean you do not have detractors, since evolution is an area where there are few certainties and many general questions as we descend to details. For Dawkins, memes are replicators, units of cultural transmission. A replicator, as its name suggests, is…