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Ανίχνευση κατανομής ιχνοστοιχείων σε λειμωνιτικές εμφανίσεις εντός ανθρακικών σχηματισμών του Φυλλιτικού Καλύμματος στην Ανατολική Κρήτη

Diakou Theofilos

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URI: http://purl.tuc.gr/dl/dias/9D020D0E-CE66-4850-A1B3-B01B85BFA0DF
Year 2019
Type of Item Diploma Work
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Bibliographic Citation Θεόφιλος Διάκου, "Ανίχνευση κατανομής ιχνοστοιχείων σε λειμωνιτικές εμφανίσεις εντός ανθρακικών σχηματισμών του Φυλλιτικού Καλύμματος στην Ανατολική Κρήτη", Διπλωματική Εργασία, Σχολή Μηχανικών Ορυκτών Πόρων, Πολυτεχνείο Κρήτης, Χανιά, Ελλάς, 2019 https://doi.org/10.26233/heallink.tuc.88532
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Summary

The purpose of this thesis is through sampling in limonite deposits and in places of occurrences of iron ores which are located in the area of Eastern Crete within the Phyllites-Quartz unit, north of the beach of Vai there are observed red marbles which are characteristic of this area, to investigate the mineralogical phases, the distribution of the main elements and the trace elements contained in them, to evaluate and compare the results from the observations and laboratory studies carried out with existing similar results from similar sampling in Western Crete.From the results of the laboratory methods, we observe that the majority of the samples are rich in iron oxides, in which the goethite has a leading role while the hematite appears in lower percentages. Within these ferrous samples we find a wide distribution of trace elements such as arsenic, chlorine, sulfur, lead, barium, copper, nickel, zirconium, strontium and zinc. The main accompanying mineral is quartz as well as phyllo-silicate and carbonate minerals.Comparatively, the results from the laboratory methods of the samples from Eastern Crete appear great similarities with the results of the samples of iron ores from Western Crete. The essential differences are the appearance of manganese in the samples of Western Crete in contrast to the lack in Eastern Crete and the high concentrations of zinc, copper, nickel and especially arsenic in Eastern Crete compared to Western Crete. On the whole the accompanying elements of the mixed sulfide ores are on the whole increased. All of the above and in combination with the existence of Permo-Triassic volcanic rocks in the wider region of Eastern Crete support the hydrothermal origin of the occurrences of these iron ores.

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