Instructions: Follow the instructions in this homework
exercise and answer all questions either on a blank
sheet of paper or directly on this question sheet, which
you must print out. The purpose of this exercise is to
explore the topic of gemstones as well as mineral exploration and
mining using information in The
Study of Minerals computer software, described below.
This assignment involves The Study of Minerals program,
which can be run at any PC computer in one of the ICS Labs by
first clicking on the Windows icon (lower left side) and
then clicking on the following links: All Programs, Class
Software, GEOL 333, Tasa Minerals. It will
take a minute or two for the computer to download the program.
If you want to run the Study
of Minerals program on a Mac computer, it must be running
the Windows 7 operating system. After you turn on the Mac
computer, it may go automatically to the Windows 7 operating
system. If so, then follow the directions in the above paragraph.
If not, then it will first go to a gray screen with the Apple
icon and the Windows icon. Use the arrow keys to toggle to
the Windows icon so that it is highlighted and then press Return.
After that, follow the same navigation instructions described
above (clicking on the links: All Programs, Class
Software, GEOL 333, Tasa Minerals).
Ask an ICS student helper if you are unable to locate and start The
Study of Minerals program.
When you reach the Main Menu, you should click on the ? Help icon in the upper left side of the screen to review controls used to navigate through the program. Click on the left-pointing arrow on the bottom right side of the screen to return to the Main Menu. NOTE: At the Main Menu, you can change the nature of the program from Intermediate to Advanced using the toggle switch in the upper right side of the screen. For this assignment, it does not matter which level you select because the material presented is identical in both versions. Click on the Chapter box Gemstones (Chapter 5 in Intermediate Level and Chapter 7 in Advanced Level) and read all of the information in this Chapter (102 frames). Answer questions (1) - (5) below while you are reading the material.
NOTE: All of the answers you provide should be based on information in The Study of Minerals computer software rather than some other resource.
(1) (a) What is a gemstone?
(b) Which of the 12 birthstones is usually most valuable?
(2) (a) What 3 characteristics determine the value of gemstones?
(b) Which of the 3 characteristics plays the largest role in determining value?
(3) (a) What is the definition of the toughness of a gemstone?
(b) What physical property leads to a low toughness value for a gemstone?
(4) How are gemstones most commonly identified? A complete answer should include 5 different properties or measurements that are done to identify a gemstone.
(5) (a) List 3 different ways that you can determine if glass was used as a fake material instead of a gemstone.
(b) How does a jeweler create faceted gemstones such as diamonds? You don't have to give all of the details of the method just a general statement of the method.
After you finish the reading the Gemstones Chapter, you should arrive at the next chapter Mineral Exploration and Mining (Chapter 6 in Intermediate Level and Chapter 8 in Advanced Level). Read all of the information in this Chapter (176 frames); however, you do NOT have to run the Mineral Exploration game at the very end of this chapter, unless you want to do that. Answer questions (6) - (10) while you are reading the material.
(6) (a) Define the term, mineral deposit.
(b) Define the term, ore.
(7) Describe 2 ways that the size of a mineral reserve can increase.
(8) Describe the specific geologic environment of formation for the following two types of mineral deposit. In particular, you need to explain how the minerals are enriched or concentrated in the deposit.
(a) hydrothermal vein deposit
(b) placer deposit
(9) Why is a geologic map useful for finding ore deposits?
(10) Why is a geochemical anomaly useful for finding ore deposits?
NOTE: You do NOT have to run the Mineral Exploration game
at the very end of this chapter, unless you want to do that. After
you finish the reading the Mineral Exploration and Mining
Chapter, click on the Menu box to return to the Main
Menu. Click on Quit to exit the program.
Finally, click on LOGOFF (upper right side) and then
click on Yes.