Browsing by Subject "tetraedryt"

Now showing 1 - 2 of 2

Access status: Restricted ,
Porównanie mineralizacji antymonu w wybranych paragenezach mineralnych
(Data obrony: 2017-07-19) Nowak, Magdalena
Wydział Geologii, Geofizyki i Ochrony Środowiska
The subject of this research is the comparison of a mineral paragenesis of an antimony from selected locations in Poland. Studies included analysis of the mineralization in the Western Tatras, from the area of Ornak and the mineralization in the Western Sudetes, which is genetically linked with the Karkonosze Granite and originates from Rędziny, Miedzianka–Ciechanowice and Szklarska Poręba Huta. The scope of the study included reflected light microscopy, phase analysis using X-ray diffraction (XRD), chemical analysis in micro area using an electron microprobe (WDS), X-ray fluorescence (XRF) as well as the studies of the morphology using a scanning electron microscopy (SEM-EDS). In all analyzed areas there was a tetrahedrite with a different chemical composition. There were presented various paragenesis and mineral associations in which tetrahedrite was present. Different physicochemical conditions of the formation of antimony minerals were distinguished. In Rędziny the isomorphic series tetrahedrite-tennantite exhibited uttermost chemical diversity. Mineralization in all selected locations has a hydrothermal origin.
Access status: Restricted ,
The mineralogical-petrographical characteristics of polymetallic ores from the Madrigal inactive mine in Peru
(Data obrony: 2018-02-02) Walaszek, Kinga
Wydział Geologii, Geofizyki i Ochrony Środowiska
Madrigal mine is located at the altitude of 3300 m a.s.l. in the province of Caylloma in the southern part of Peru in the Western Cordillera of the Central Andes. The ore has epitermal character, was formed in a form of veins and contains polymetallic ores such as Ag, Cu, Zn and Pb. On the basis of research on six the most representative samples which were taken from the mining area following ore minerals were identified: pyrite, chalcopyrite, sphalerite, galena, pyrrhotite, covellite, hematite and titanium oxides. It was shown that minerals were formed in different time periods, what is proved by two generations of pyrite appearing in every sample. In its crystals there are inclusions of other substances like: rutile, chalcopyrite or galena. Moreover, it is visible that most of the rocks were oxidised and changed by secondary processes.