Silicаte Minerаls (15pts Tоtаl): In pyrоxene, Mg-end member Enstatite (MgSiO3) and Fe-end member Ferrоsilite (FeSiO3) form a solid solution, (FexMgx)1SixO3. Chemical composition of a pyroxene mineral is given in the table below in weight percent (wt%) and molar fractions of component oxides. Components wt% Molar mass Molar fraction MgO 30.22 40.30 0.75 FeO 13.47 71.84 0.19 SiO2 56.31 60.08 0.94 A) (15pts) Determine the chemical formula of this pyroxene in the correct format (FexMgx)1SixO3 using the steps from M2A. SHOW YOUR WORK….on a separate piece of paper and put a box around your determined chemical formula! Take a picture of this document and upload to this link once you have completed the exam. If you have issues with the upload or run out of time, email it to me immediately after the exam. I will not accept documents that are not near the end time of when you took the exam.