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Showing 1 to 20 of 37 for “"mineralogical composition"”.
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ΤΕΧΝΙΚΟΓΕΩΛΟΓΙΚΕΣ ΣΥΝΘΗΚΕΣ ΣΤΟ ΝΟΜΟ ΑΧΑΙΑΣ-ΓΕΩΜΗΧΑΝΙΚΟΙ ΧΑΡΑΚΤΗΡΕΣ ΤΩΝ ΠΛΕΙΟΠΛΕΙΣΤΟΚΑΙΝΙΚΩΝ ΙΖΗΜΑΤΩΝ
… FOLLOWING, THE LITHOSTRATIGRAPHY, TECTONICS, MINERALOGICAL COMPOSITION AND FABRIC, AND PHYSICAL AND MECHANICAL PROPERTIES OF THE PLIO-PLEISTOCENE SEDIMENTS FROM THE THREE SEDIMENTATION BASINS (CORINTHIAN, PATRAIKOS AND LEONDION) WERE STUDIED. (SHORTENED)
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A study of impact breakage of single rock specimen using discrete element method
… Several factors, such as pre-existing cracks, mineralogical composition, ore shape and size are known to affect ore breakage behaviour during breakage. To investigate breakage mechanisms, it is important to be able to determine how individual factor influences the breakage behaviour of rock …
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ΜΕΛΕΤΗ ΚΑΙ ΠΑΡΑΣΚΕΥΗ ΚΥΨΕΛΩΤΟΥ ΚΟΝΙΟΔΕΜΑΤΟΣ ΥΔΡΟΘΕΡΜΙΚΗΣ ΚΑΤΕΡΓΑΣΙΑΣ ΜΕ ΜΕΙΩΜΕΝΕΣ ΣΥΣΤΟΛΕΣ ΞΗΡΑΝΣΗΣ
… CONTENT IN A.C. C. B. ON THE BASIS OF MINERALOGICAL COMPOSITION AND MICROPORE SIZE DISTRIBUTION OF A.C.C., THE DRYING SHRINKAGE VALUES SHOULD BE WITHIN THE REALM OF PREDICTABILITY. A PRACTICAL APPLICATION OF THE STUDY HAS BEEN THE SUCCESSFUL UTILIZATION OF PTOLEMAIS FLY ASH IN THE …
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The suitability of rammed earth for construction in the Cape Town metropolitan area
… to determine type and level of soluble salts and mineralogical composition.
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Geochemistry of Variscan lamprophyre magmatism in the Saxo-Thuringian Zone
… their field setting, petrography, chemical and mineralogical composition. These rocks not only provide important information on melting processes in the mantle, but also on geodynamic processes modifying the mantle. There are numerous occurrences of lamprophyres in the Saxo-Thuringian Zone of …
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An investigation into the feasibility of bioleaching copper sulphide ore of Nchanga mine, Chingola, Zambia
… kinetics data on account of variability of mineralogical composition and different solution conditions and leaching systems being employed. This has indicated that further work was necessary to determine the kinetics of copper extraction, extent of mineral dissolution and effects of some …
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ΤΕΧΝΙΚΟΓΕΩΛΟΓΙΚΟΙ ΧΑΡΑΚΤΗΡΕΣ ΤΩΝ ΜΑΡΓΩΝ ΗΡΑΚΛΕΙΟΥ ΚΡΗΤΗΣ
… GEOLOGICAL ENVIROMENT IS DESCRIBED AND THEIR MINERALOGICAL COMPOSITION AND FABIRC ARE DETERMINED. FOR THE GEOTECHNICAL DESCRIPTION AND CLASSIFICATION OF THESE MARLS PARTICLE SIZE DISTRIBUTION AND PLASTICITY ARE EXAMINED. CONSEQUENTLY, SOME RESULTS FOR THEIR CLAY PARTICLES AGGREGATION AND THEIR …
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ΙΣΟΡΡΟΠΙΑ ΑΝΤΑΛΛΑΞΙΜΩΝ-ΔΙΑΛΥΤΩΝ ΜΟΡΦΩΝ ΚΑΛΙΟΥ-ΜΑΓΝΗΣΙΟΥ ΣΤΑ ΕΔΑΦΗ
… ITS REVERSIBILITY AND TO RELATE IT WITH THE MINERALOGICAL COMPOSITION OF THE SOILS. COMPARISON OF THE EXPERIMENTAL ISOTHERMS TO THE NON-PREFERENCE ISOTHERMS REVEALED THAT ALL THREE SOILS EXHIBITED HIGH PREFERENCE FOR POTASSIUM RELATIVE TO MAGNESIUM IONS. THE VALUES OF THE THERMODYNAMIC …
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The genesis and characteristics of the fragipan of the Beltsville soils
… were studied in relation to the mechanical composition, the mineralogical composition, and some of the chemical and physical properties. Soil samples were selected to represent a profile developed over Coastal Plain deposits, schist, and granite, respectively. A high kaolinite content, a low …
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Geochemical Analysis of Ironstone Preserved Molluscan Fossils of the Hell Creek Formation (Cretaceous) and Ludlow Member of the Fort Union Formation (Paleogene) of Southwestern North Dakota
… oxide by various researchers. To date, the exact composition of the ironstone preservation has not been satisfactorily determined to allow agreement between researchers. Freshwater mollusk fossils, preserved as ironstone external casts, molds, and steinkerns, tend to be highly weathered. The poor …
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Petrology, Provenance, and Depositional Setting of the Lower Tallahatta Formation (Meridian Sand) in Grenada County, Mississippi
… X-ray fluorescence (XRF) to identify elemental composition. X-ray diffraction (XRD) analyses were conducted to characterize the mineralogical composition of mud samples. Nine lithofacies were defined based on lithologic properties, and field observations. The general lithology of the Meridian …
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An assessment of morphological, physical, chemical, and mineralogical properties of soils derived from volcanic deposits in Rwanda
… volcanic materials differing in petrological composition and age, and to compare soils under the native vegetation to those under cultivation. The soils are characterized by thick, dark A horizons and dark brown or grayish brown cambic horizons. Organic C is high and is associated with high …
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Factors Influencing the Post-Earthquake Shear Strength
… the effect of plasticity characteristics, mineralogical composition, and accumulated energy on the cyclic behavior, post-cyclic shear strength and the degradation in shear strength due to cyclic loading in normally consolidated clays. Seventeen soil samples prepared in the laboratory from …
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Distribution of olivine and pyroxene in S-type asteroids throughout the inner main belt
The mineralogical composition of asteroids can be constrained using visible and near-infrared (VNIR) spectroscopy. The most prominent spectral features observed over this wavelength range are due to olivine and pyroxene, the two most abundant minerals in both chondritic and achondritic meteorites. …
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Caprock integrity evaluation for geosequestration of CO2 in depleted petroleum reservoirs.
… of the formations due to changes in their mineralogical compositions during the geochemical reactions. Therefore, studies on the co-injection of CO2 with other acid gases from industrial emissions and their impact on caprock integrity are paramount. In this study, numerical simulations were …
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Fine aggregate resources in the greater Cape Town area
… sizes that are well distributed, and (3) a mineralogical composition that is relatively inert, thus is not deleterious in concrete. Additionally, a resource must be economically viable, and be exploited in a manner such that the development aims to safeguard the environment for the benefit …
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Mechanical properties and microcracking behaviour of heterogeneous rocks after high-temperature treatment
… °C). Subsequently, the effects of grain size and mineralogical composition on the fracture toughness, fracture path, tortuosity and fracture width of granite under mode I loading conditions after high-temperature treatment were further studied. The results show that granite with larger average …
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The potential of QEMSCAN in predicting coal washability of Mpumalanga coals
… to characterise particle density based on the mineralogical composition of the particle. The objective of this research is to determine if QEMSCAN is a viable alternative to float and sink analysis. Float and sink analysis typically requires coarse size fractions while QEMSCAN analysis requires …
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Effects of Temperature on Residual Shear Strength of Cohesive Soils
… that might be attributed to the sample's mineralogical composition and the testing procedure. This thesis aims to contribute to the understanding of (1) the temperature effects on the liquid limit of cohesive soils, (2) the impact of testing procedure on temperature-dependent residual …
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Permeability anisotropy and resistivity anisotropy of mechanically compressed mudrocks
… a range of plasticity, clay fraction and mineralogical composition. The permeability anisotropy and the conductivity anisotropy (inverse of the resistivity anisotropy) of uniform RBBC increase from 1.2 to 1.9 as the porosity decreases from 0.49 to 0.36. The permeability decreases by over …
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