Identificação dos minerais presentes no rio Búzi, Província de Sofala

Abstract

Mineralogy is an important branch of geology, as the knowledge of the Mineralogical fractions provide information of the evolution of different geological environments. The present work had as main objective the identification of minerals present in sediments of the Buzi River, where they were collected a total of 12 samples of sediments in 4 different sand banks along the river. The identification of these minerals has been made using the method of x-ray diffraction, using the same method it was possible to quantify these minerals were identified 24 different species of minerals in samples including: Quartz, Tridimite, Albite, Macaite, Neodymium, Gypsum, Humerite, Arturite, Erionite, Heulandite, Sodalite, Bogsite Keidishite Caysichite, Analcime, Ravatite, Neptunite, Zeolite, Lipscombite, Bamfordite, Microcline, Lurionite, Krautite and Graphite. Quartz was the only mineral identified in all the sand banks, reached the maximum intensity peaks and low percentages in some samples and high on the other, this variation of Quartz probably related to your stability facing the weathering, and the difference of percentages can be linked to harvest and methodology that have been made on the surface. The Leucite, Tridimite, Albite, microcline, Lipscombite, Erionite and Quartz were the minerals that showed larger quantities in samples with the percentages of 58.3, 52.3, 36.3, 25.5, 23, and 20.7 20.2 respectively. The remaining minerals showed relatively low quantities, Graphite with 0.5% the mineral with the lower percentage, other minerals like Laurionite with 2% Bamforidite-6.7%-14.5%, Zeolite, Boggsite-4.1%, Sodalite 8.2% and Heulandite with 5.1% were the minerals that showed the percentages more boxes in the respective samples. In general the amount of minerals present in the Buzi River range increasing and decreased, these variations may be associated with their origin and or to the effect of turbulence that are generated by the currents along the river.