GEOS 306 Final: GEOS 306 University of Arizona Final 2007
31 Jan 2019
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2007 final (200 pts: (20 pts) construct electronic spin diagrams for mg, mg2+, al, al3+, s, s2-. 2: (5 pts) draw a picture of a hexagonal lattice; indicate the origin and the cell edges. 4: (20 pts) enstatite is mgsio3 orthopyroxene with cell edges a = 18. 233 , b = 8. 8191 , c = 5. 1802 and z = 16. 1023 mole-1 and that 108 = 1 cm: determine the cell volume of enstatite, determine the molecular weight of mgsio3, determine the density of enstatite. 5: (20 pts) from the microprobe analyses of a mineral, the following oxide weight percents were measured. 6: (20 pts) sketch a diagram showing the structure of the earth. Make a table and define the boundaries of each region by a). depth, b). temperature, and c). pressure. Include the surface and the center of the earth in your answer. d). List the important mineral phases that are found in each of the different regions.
