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Geology Section 5.2 Homework: Composition and Structure of Minerals: due Tuesday, 11/15/11
Read Section 5.2, pages 96 to 102. Answer the following questions.
Animation to help with crystal systems Question #6:
http://www.materials.ac.uk/elearning/matter/Crystallography/3dCrystallography/7crystalsystems.html
Silicate Mineral Animation 1 to help with Question #7:
http://www.visionlearning.com/library/module_viewer.php?mid=140
Silicate Mineral Animation 2 to help with Question #7:
http://web.visionlearning.com/silica_molecules.shtml
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Last Name, First Name
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Your answer
Period (Do not put nd, rd, or th after the #.)
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Your answer
List the 5 things that make a mineral a mineral.
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Your answer
What are the two most abundant elements in Earth's crust by mass?
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aluminum and iron
calcium and sodium
oxygen and magnesium
silicon and oxygen
iron and potassium
Describe the three ways in which minerals can form.
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Your answer
Diamond is much harder than graphite because of
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diamond and carbon are made of different elements
diamond has its atoms arranged in a tetrahedral network
graphite has its atoms arranged in hexagonal sheets
both the second and third options are correct
True or false. Graphite is more dense than carbon.
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True
False
Name and Describe each of the six mineral crystal systems depicted on page 99. Use the link above to look at these crystal systems in an animation.
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Your answer
Look at the graphic on page 101 entitled "Molecular Structure of Some Common Silicate Minerals." Name each silicate group and Describe how the silica-oxygen tetrahedron combines to make each group. Use the animation links above to help you.
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Your answer
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