GEOS 306 Final: GEOS 306 University of Arizona Final 2008
31 Jan 2019
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2008 final (200 pts: (20 pts) list 7 common types of bonding found in minerals along with a short description and an example of each. , is an important rock-forming mineral whose presence indicates a high-pressure, or deep earth source. It usually has a deep red color and can be found with diamonds. Assuming the following radii, r(o) = 1. 30 , r(mg) = 0. 98. , r(al) = 0. 65 , r(si) = 0. 35 , then. 2: (12 pts) fill in the table that defines the shape and constraints of the unit cell parameters. a c b. Triclinic: (10 pts) make a careful drawing and derive bragg"s law for x-ray diffraction. 4: (20 pts) from the microprobe analyses of a spinel from san carlos, arizona, the following oxide weight percents were measured. Determine the chemical composition of this sample of spinel. 5: (20 pts) sketch a diagram showing the structure of the earth.
