While hiking the slopes of El Chichón volcano in Mexico, you discover an outcrop of microcrystalline (0.1-0.5 mm) volcanic rock. You perform whole-rock geochemical analysis of the rock, and find it contains 57.6 wt% SiO2, 18.3 wt% Al2O3, 6.4wt% Fe203, 7.3wt% CaO, 4.3 wt% Na2O, 3.1 wt% MgO, 2.5w% K20, and trace amounts of other compounds. What is the rock name?_____________________________
Please read over the questions carefully and answer the questions and label the corresponding diagram (attached image 1). (I have also added a closer up image of the bottom left diagram (image 2).
Show your calculations and plot each rock on the appropriate blank classification diagram on the back of this page. Label your plotted points with the corresponding question number and label the corners of the diagram.
6. While hiking the slopes of El Chichón volcano in Mexico, you discover an outcrop of microcrystalline (0.1-0.5 mm) volcanic rock. You perform whole-rock geochemical analysis of the rock, and find it contains 57.6 wt% SiO2, 18.3 wt% Al2O3, 6.4wt% Fe203, 7.3wt% CaO, 4.3 wt% Na2O, 3.1 wt% MgO, 2.5w% K20, and trace amounts of other compounds.
What is the rock name?_____________________________
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