Mineralogy and Petrology I Geology 2311Exam: 1 hourOctober 11, 2007Name _______________________________Answer five of the following six questions. Each question is worth 10 points. If you spend an average ofone minute per point on each question, you should finish in 50 minutes. Please time yourself.1. How do you predict what kind of polyhedron an ion will occupy in a crystal structure? Use examples.What are three of the five Pauling's Rules that govern how these polyhedra form?__________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________2. Write an essay on solid solution. Your answer should include what it is, what determines if it takesplace, the different kinds of solid solution, what physical properties change with solid solution, andexamples of the above. __________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________3. Calculate the weight percent Na2O in albite.Oxide Molecular weightNa2O 61.98Al2O3101.96SiO2 60.09Please show all your work. (If you need to ask me the formula., I will give it to you, however you will lose2