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In this paper will discuss the minerals present in pegmatites, seen as a way of storing chemical elements, important from an economic point of view. The study area is called Con?u - Negovanu, and is located between the two mountain massifs known as Cindrel (Cibin) and Lotru Mountains. Muscovite (seen as a possible indicator for lithium in Con?u - Negovanu pegmatites), one of the important minerals alongside quartz, spodumene, and albite cleavelandite variety, is probably the mineral that includes in its structure ...

In this study on speaking about minerals, we can use the elements from them in high-tech technology in everyday life. The pegmatites are surrounded by gneiss with muscovite, garnets, staurolite; mica schists with garnets, staurolite, kyanite; and amphibolites. In the Con?u area pegmatites appear in tabular veins form, or irregular lenses, arranged by accordance with mica schists of the host metamorphic rocks. The pegmatites veins have a thickness that varies between 2 and 10 meters in the central area and developm...

This paper proves news about the argillized (bentonitized) deposits that are part of a complex distribution of volcanic rock types occurring in the Gurasada region. These are the oldest deposits of volcanic origin crops out in the Gurasada open pit. Above these are volcanic deposits of andesitic composition represented by pyroclastic breccias, rare tuff levels and lava flows. The site observations, petrographic, XRD, RAMAN spectroscopy and chemical analyses indicated the formation of the bentonite deposit by weath...