You're studying a coarse-grained (5-10 mm) igneous rock. The hand sample contains equal proportions of black pyroxene and dark-gray plagioclase. There is little else in the rock. This is substantiated by thin section study. Microprobe analyses indicate that the pyroxene is augite and that the plagioclase is Anz (bytownite). 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.
3. You're studying a coarse-grained (5-10 mm) igneous rock. The hand sample contains equal proportions of black pyroxene and dark-gray plagioclase. There is little else in the rock. This is substantiated by thin section study. Microprobe analyses indicate that the pyroxene is augite and that the plagioclase is Anz (bytownite).
What is the rock name? ____________________________
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So what are the calculations for this problem? I see the diagram but you didnt explain the math or how you go to that answer