Browsing by Subject "serpentinite"

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Charakterystyka mineralogiczno-petrograficzna odmian strukturalnych serpentynitów (Sa Thày-Kon Tum, Wietnam)
(Data obrony: 2017-07-17) Gola, Maria
Wydział Geologii, Geofizyki i Ochrony Środowiska
Celem pracy dyplomowej jest charakterystyka mineralogiczno-petrograficzna serpentynitów z dystryktu Sa Thay w prowincji Kon Tum (centralny Wietnam). Badanych 10 próbek skał pochodzi z różnych głębokości z dwóch otworów wiertniczych LK1 (7 próbek) i LK2 (2 próbki) oraz z wykopu SN203 (1 próbka). Zostały przekazane do badań laboratoryjnych przez geologów z Hanoi University of Mining and Geology. Wykonano obserwacje makro- i mikroskopowe przy użyciu mikroskopu polaryzacyjnego do światła przechodzącego, a także elektronowego mikroskopu skaningowego (SEM) z detektorem do badań chemicznych w mikroobszarze EDS) oraz analizy rentgenograficzne (XRD). Badane próbki różnią się między sobą cechami strukturalno-teksturalnymi oraz składem mineralnym (zawartością minerałów głównych i akcesorycznych). Wiele z nich wykazuje także różny stopień przeobrażeń o charakterze hydrotermalnym. Protolitem badanych skał były skały ultrazasadowe (typu perydotytu). Z czasem serpentynity te uległy wtórnym procesom - karbonatyzacji i otalkowaniu. Badaniami wykazano obecność: minerałów grupy serpentynu, węglanów, talku, reliktów minerałów pierwotnych (oliwny, pirokseny), kwarcu, amfiboli oraz minerałów rudnych (tlenki tytanu, siarczki i tlenki żelaza).
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Okruszcowanie serpentynitów pasma Bayankhongor, S-Mongolia
(Data obrony: 2014-07-14) Kozioł, Hubert
Wydział Geologii, Geofizyki i Ochrony Środowiska
Mineralogical analysis has been carried out on 37 rock samples collected between 2008 and 2012 in M2 concession area, Gobi desert, southern Mongolia. Potential serpentinites thin sections have been described under a polarizing microscope with the use of transmitted and reflected light. Further X-ray and scanning electron microscope (SEM-EDS) analysis allowed to identify minerals and their chemical composition in detail. Serpentinites are mainly made of antigorite and consist some amount of ores such as pyrite, chalcopyrite, bornite, covellite, ilmenite, hematite, millerite, pentlandite and spinel group series (magnetite – chromite/Cr-pleonaste/picotite). As a result of petrological data processing, mineral succession has been determined. Occurring ores are connected to magmatic, metamorphic and hypergenesis phase.
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Ore mineralization in the serpentinites in Bajgorë area, Kosovo
(Data obrony: 2016-06-30) Piątek, Tomasz
Wydział Geologii, Geofizyki i Ochrony Środowiska
Bajgorë area is located in the neighborhood of Stan Terg deposit in the North-East part of the Kosovo. Occurrences of $Ni$ and $Cr$ ore deposits within serpentinite rocks and $Pb-Zn$ secondary alteration zones in this region were considered. For this purpose twenty six samples were collected from eighteen different outcrops. They were investigated using transmitted and reflected light, XRD, SEM and EDS. Chromite minerals were identified within serpentinites. Listwanite rocks were found with traces of copper, tin, lead, zinc, and nickel. More advanced investigations are strongly advised in this area.
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Wybrane, nowe propozycje atrakcji geoturystycznych z Dolnego Śląska
(2010) Lorenc, Marek Wojciech; Mazurek, Sławomir
The Lower Silesia is the region of the largest diversity of igneous, sedimentary and metamorphic rocks used for construction and decoration. These rocks are extracted in numerous quarries, which are generally inaccessiblefor tourists. Hence, the educationally important, unique or just interesting sites remain unknown and cannot be included into the educational activity. However, there is a great number of abandoned quarries, which have been densly vegetated since the closure and which were rather distant from popular tourist trails. Among them are many sites of significant historical value due to the age of exploitation or particular stones then used for construction of important historical monuments or for carving the stonework or sculpture masterpieces. The following paper presents the currently operating quarries with the reference to modern buildings in Wroclaw, in which specific stones were used. Moreover, the abandoned quarries were described, which may become tourist and geotourist attractions if properly developed and provided with relevant information.