Wyniki wyszukiwania - BazTech

1

Mineralizacja markasytowo-hematytowo-ankerytowa w południowo-wschodniej części Gór Świętokrzyskich

Nieć M., Pawlikowski M.

Przegląd Geologiczny

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2015

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Vol. 63, nr 4

219–-227

EN

The occurrences of previously unknown, iron sulphide (marcasite-pyrite)-hematite and ankerite mineralization have been recorded in the eastern part of the Holy Cross Mts. They are located in the fault zones within Middle Devonian dolomites. Irregular recrystalization of dolomite and its replacement by illite is an accompanying peculiar feature. Similar disseminated pyrite-hematite mineralization is known in the hanging wall of the Rudki iron sulphide ore deposit. The occurrence and mineral composition of this mineralization allow to suppose it was formed by low temperature hydrothermal processes, close to the end of the Variscan orogeny.

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Produkty oddziaływań diagenetycznych i hydrotermalnych w skałach osłony neogeńskich wulkanitów pienińskiego pasa skałkowego - wstępne badania mineralogiczno-petrograficzne

Pawlikowski M., Natkaniec-Nowak L., Dumańska-Słowik M., Kępińska B., Sikorska M.

Technika Poszukiwań Geologicznych

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2011

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R. 50, nr 1-2

377-385, 4 nlb.

PL

Przedstawiono wyniki wstępnych prac terenowych i badań mineralogiczno-petrograficznych skał z wybranych rejonów pienińskiego pasa skałkowego po stronie polskiej i słowackiej. Ich celem było rozpoznanie objawów procesów hydrotermalnych i wytypowanie obszarów potencjalnie najkorzystniejszych z punktu widzenia możliwości dalszych badań pienińskiego pasa skałkowego pod kątem rozpoznania termicznego i geotermalnego. Badania laboratoryjne dotyczyły przede wszystkim charakteru mineralnego oraz częstości występowania różnego rodzaju żyłek (głównie węglanowych) tnących skały z najbliższego otoczenia neogeńskich wulkanitów PPS. Stwierdzono, że skały z rejonu potoku Piekiełko koło Krościenka charakteryzuje największa ilość żyłek, zarówno pod względem liczebności jak i miąższości. Są to w przewadze skały okruchowe (piaskowce) odznaczające się dość znaczną szczelinowatością. Wskazano na potrzebę przeprowadzenia dalszych badań geologicznych i wiertniczych.

EN

The results of preliminary field works as well as mineralogical and petrographical investigations of rock samples from selected localities in the Pieniny Klippen Belt (Polish and Slovakian sides) are presented. They aimed at recognition of hydrothermal processes and indicating the most prospective areas for further thermal and geothermal exploration. The laboratory research concentrated mostly on mineralogical composition and frequencies of occurrence of various types of veins (mostly carbonate) which intersect the rocks from the nearest proximity of the Neogene volcanites of the Pieniny Klippen Belt. It was found that the highest number of veins (regarding their abundancies and thicknesses) is ascribed to the rocks outcropping in the area of Piekiełko brook near Krościenko. There are mainly detritic rocks (sandstones) with relatively high amount of fractures. The need for further geological research and drilling works was pointed out.

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New insights into the mineralization of the Czarnów ore deposit (West Sudetes, Poland)

Mochnacka K., Oberc-Dziedzic T., Mayer W., Pieczka A., Góralski M.

Geologia Sudetica

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2009

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Vol. 41

43-56

EN

This paper provides new data on the mineralogy and mineral chemistry of the Czarnów ore deposit, a polymetallic vein that occurs within the eastern envelope of the Karkonosze Pluton (West Sudetes). New data are also provided on the deposits' geothermometry, mineral succession, and origins. The Czarnów ore vein is about 500 m long, strikes SW-NE, dips 80° SE and continues to a depth of 200 m. It is hosted within the albite-mica schists, quartzofeldspathic rocks and striped amphibolites that comprise the Czarnów Schist Formation (CSF); its western part is composed of almost monomineral arsenopyrite, whereas the southwestern part locally contains a pyrrhotite lens that extends downwards. Although many types of sulphides, sulphoarsenides, sulphosalts and native phases accompanied by oxides and arsenates have been previously reported, this paper describes four minerals that have not been previously identified from the Czarnów deposit: ferrokësterite, ikunolite, bismite and pentlandite. Geothermometry data suggest formation temperatures of arsenopyrite between 551 °C and 420 °C and that of sphalerite between about 400 °C to about 200 °C. Fluid inclusion data from vein quartz gave homogenization temperatures between 430 °C and 150 °C. Integrat on of textural and other data suggests the following primary mineral succession: early arsenopyrite and cassiterite as the high-temperature phases; then combinations of pyrrhotite, pyrite, chalcopyrite and sphalerite, all of which formed over a wide temperature range; finally, low temperature galena and Bi phases. Secondary weathering products overprint the primary sequences. Cataclasis of the first-formed arsenopyrite imply that mineralization was related to at least one tectonic event in the region. The Czarnów ore deposit probably resulted from hydrothermal activity associated with the near Karkonosze granite.