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Question: 52 listed below are a few cipw norms for major...

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5.2 Listed below are a few CIPW norms for major element analyses of basalts. Use the basalt tetrahedron to classify these rocks. 4.90 7.58 25.74 7.32 22.52 4 0.08 0.84 25.49 29.96 3.05 5.97 28.32 31.27 Or Ab An 3.20 21.88 23.71 3.01 23.34 28.38 1.67 20.44 26.69 18.49 2.00 9.50 4.62 5.35 0.95 0.05 99.81 8.21 13.60 15.64 16.04 2.68 4.72 2.97 0.57 1.57 98.92 16.61 16.97 18.81 16.06 Di Ol Mt Ilm 22.49 1.02 7.83 0.74 0.43 3.94 3.85 0.54 1.65 99.93 6.96 4.10 0.67 0.99 100.89 7.20 2.19 0.57 0.71 100.62 Other Total 00.57 5.3 What does the silica-saturation plane mean? Why cannot olivine and quartz norms coexist?
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