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Earth Science Section 5.2 Homework: Identifying Minerals: Due Thursday, 11/17/11
Read Section 5.2, pages 109-114. Answer the questions that follow.
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Last Name, First Name
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Period (Do not put "rd" after the number!)
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The streak of the mineral is
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the way that light reflects off of a mineral
the color of the dust of the mineral when scraped on a porcelain tile
the uneven break of a mineral
nice even breaks in a mineral
Mineralogists study
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earthquakes
tsunamis
hurricanes
minerals
far off stars
Sapphire and ruby are both types of corundum. What makes them different?
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Ruby does not have aluminum and oxygen atoms.
Ruby gets its red color from Chromium.
Sapphire gets its blue color from traces of iron.
The second and third options are correct.
Why is the color of a mineral an unreliable test for its identification?
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Your answer
What are the two main types of luster of a mineral?
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oily and dull
glassy and pearly
greasy and vitreous
metallic and non-metallic
What would you look for to determine if a mineral has cleavage or fracture?
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Look at Table 1 on page 111. What minerals correspond to the Mohs Scale hardness ratings of 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10?
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Which one of the following is NOT a special property of a mineral?
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fluorescence
hardness
phosphorescence
chatoyancy
magnetism
double refraction
radioactivity
Density is good for helping to identify
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lighter minerals
heavier minerals
streak
luster
cleavage
Look at Table 2 on page 112. Name and describe the six basic crystal systems. See the class schedule part of the website for an animation to help you to do this.
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