Volume 11, Issue 1-2 (Jan-Dec 2001)

Abstracts

• Ioannis Meladiotis, Markos Tranos, Edmondos Tsolakopoulos (Laboratory of Engineering Geology, Department of Civil Engineering, Aristotle University of Thessaloniki, GR-540 06 Thessaloniki, Greece): "Localization and mapping of fault structures in the eastern part of the Askio Mountain (W. Macedonia, Greece) with the aid of digital satellite data." Mining & Metallurgical Annals, vol. 11, issue 1/2, Jan-Dec 2001, pp. 19-34.
 
In this paper a methodology on the localisation and mapping of fault structures by using digital satellite data is attempt to be presented. The methodology, which has been applied in the eastern part of the Askio Mountain (W. Macedonia, Greece), is based on the introduc-tion of specific criteria for surveying digital satellite data, combined simultaneously with the tectonic criteria of the recognition of the large fault structures. The validity of the methodology was verified by comparing its results with those of the already published geological maps. The digital satellite data that have been used are part of the Landsat-5 TM, whereas their elaboration and analysis has been accomplished with the ERDAS Imagine 8.3.1 soft-ware program. From the derived false colour compositions and the chosen criteria the most appropriate ones for the investigated area are the FCC3, FCC7, FCC8 and FCC9. The out-come fault pattern is more complete and informative in comparison to that of the classical geological mapping, and includes NNW-SSE, NW-SE, NE-SW and E-W fault structures. (Article in Greek.) © Mining & Metallurgical Annals, Hellenic Society of Mining & Metallurgical Engineers, 2001.

• Abraham Zelilidis, Pavlos Avramidis, Kostas Voudouris (University of Patra, Dept. of Geology, GR-265 00 Patra, Greece): "Sedimentological environments and hydrogeological conditions in relation to the Pindos foreland evolution, Tritaia area, NW Peloponnesus." Mining & Metallurgical Annals, vol. 11, issue 1/2, Jan-Dec 2001, pp. 35-52.
 
As a result of basin evolution due to Pindos thrust activity, the Tritaia basin is subdivided into two hydrogeological areas. The first area, located in the Southeastern part of the studied basin, corresponds to the hangingwall of the Pindos thrust, where the Pindos zone sediments have accumulated. These deposits dip in a NE direction and consist of alternated clastic and calcareous sediments. Due to their lithologies composition and their dip directions, on the thrust front important seasonal water sources are formed, whereas major water sources are developed NE-wards. The second area, located in the Northwestern part of the studied basin, corresponds to the footwall of the thrust. In that area, foreland basin deposits were developed that consist of inner fan deposits. These sediments, formed either due to their lithological composition (alternating conglomerates,  sandstones and mudstones) or due to their deformation (synclines and anticlines), are aquiferous and can solve local water supply problems. Tectonic activity, along the Pindos thrust front and in the western part of the studied basin, surficial exposure of the limestones take place. The total porosities of the sandstones, determined by the ‘saturation and buoyancy’ technique using six representative samples, fluctuate between 3.2 and 12.1%. The interpretation of 23 geoelectrical soundings indicate that Skolis limestones of Gavrovo zone extend to big depths due to faults’ activity, whereas the limestone in Skiadas-Alepochori area along the thrust front has small thickness. The majority of the flysch groundwater and karstic springs belong to calcium bicarbonate type, suitable for irrigation use (classes C1-S1, C2-S1). (Article in Greek.) © Mining & Metallurgical Annals, Hellenic Society of Mining & Metallurgical Engineers, 2001.

• Eleni Karka (National Technical University of Athens, Department of Architecture, Laboratory of Regional Planning and Urban Development, Iroon Polyetchniou 9, GR-157 80 Zografos, Greece): "The location of mining activities." Mining & Metallurgical Annals, vol. 11, issue 1/2, Jan-Dec 2001, pp. 53-62.
 
The paper focuses upon the subject of mining activities’ location, which is more complicated than it seems at a first glance. The deposit availability and geological characteristics are decisive factors for the location of a mining industry, but the final decision for a deposit exploitation depends mainly on parameters that are related to the human environment of the activity: infrastructure availability, dealings with land proprietors, labour cost, cultural heritage, public opinion’s sensitization on environmental impacts and others. Issues already being of critical importance for various industrial activities, take a different meaning in the case of mining, given the size and the specific characteristics of mining operations. © Mining & Metallurgical Annals, Hellenic Society of Mining & Metallurgical Engineers, 2001.

• Anastassios Grammatikopoulos (Lakefield Research Limited, 185 Concession St., Lakefield, ON, Canada K0L 2H0), Triantafyllos Soldatos (Section of Mineralogy-Petrology-Economic Geology, Dept. of Geology, Aristotle University of Thessaloniki, GR-540 06 Thessaloniki, Greece): "The role of Mineralogy in the evaluation of industrial mineral deposits." Mining & Metallurgical Annals, vol. 11, issue 1/2, Jan-Dec 2001, pp. 63-78.
 
Deposits of high quality industrial minerals are uncommon, therefore such deposits are highly priced. Industrial minerals are used in ceramics, plastics, thermal and electrical insulators, paints, paper, oil, automobile and pharmaceutical industries among others applications.

Mineralogical studies in industrial mineral deposits aim at determining the physical and chemical characteristics of the minerals so as to establish the treatment (mineral processing, metallurgical treatment, etc.) and final use of the minerals. Characterization of industrial mineral deposits includes mineral identification by X-ray diffraction (XRD), and whole rock analysis (WRA), carried out by X-ray fluorescence (XRF), which is important to determine the overall chemistry of the ore. However, these are not always adequate to determine the quality of the ore and concentrates, especially in rocks and products that contain contaminants whose composition may be similar to those of the industrial minerals. A complete study of the quality of industrial minerals should involve microscopic methods including the use of reflected and transmitted light microscopy, cathodoluminescence (CL) and scanning electron microcopy (SEM), and the determination of the chemical composi-tion of the minerals with electron microprobe analyses (EMPA). Examples of mineralogical studies in wollastonite, muscovite and carbonates indicate that mineralogy is critical to successful ore exploration and beneficiation. In fact, mineralogical studies may be the guide for a successful implementation of a metallurgical test program. (Article in Greek.) © Mining & Metallurgical Annals, Hellenic Society of Mining & Metallurgical Engineers, 2001.

• Dimitris Drymonitis (Institute of Geology and Mineral Exploration, Mesogeion 70, GR-115 27 Athens, Greece): "Update Communication: Bibliography of Geostatistics." Mining & Metallurgical Annals, vol. 11, issue 1/2, Jan-Dec 2001, pp. 63-78.
 
As a continuation of a previous compilation of the most important bibliography of Geostatistics [D. Drymonitis (1985), Mineral Wealth, No 34, 33-45], the author makes a bibliography update for those dealing with the science of Geostatistics. The new attempt has brought another 240 new references to be added to the original list of 300 entries, all of which have been selected from books, scientific journals and conference proceedings. The author does nor believe that his previous and present bibliography lists can cover completely all new developments in Geostatistics. Obviously there are publications (books and articles) that may have escaped the attention of the author. The importance of each article can be judged only by the interested readers, because even the least important article may contain information that may be useful in solving a particular problem; and this is the objective of the present article. (Article in Greek.) © Mining & Metallurgical Annals, Hellenic Society of Mining & Metallurgical Engineers, 2001.

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