Question: solve problem 12 ab and c amp problem 13 please...

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Solve: Problem 1.2 A,B and C. & Problem 1.3. Please show work. Dont understand.
Problem 1.2. Determine the rock names for coarse grained rock samples with the following mineral proportions. A B C Alkali feldspar 15 3 0 Plagioclase 46 64 92 Quartz Biotite Hornblende 13 15 5 Other 2 11 0 Problem 1.3. A coarse-grained rock sample consists of 15 percent plagioclase, 35 percent augite, and 50 percent enstatite, What is the name of this rock according to the IUGS classification?

Problem 1.2. Determine the rock names for coarse grained rock samples with the following mineral proportions. A B C Alkali feldspar 15 3 0 Plagioclase 46 64 92 Quartz Biotite Hornblende 13 15 5 Other 2 11 0 Problem 1.3. A coarse-grained rock sample consists of 15 percent plagioclase, 35 percent augite, and 50 percent enstatite, What is the name of this rock according to the IUGS classification?

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Question: solve problem 12 ab and c amp problem 13 please...

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