Using the URLs listed in the Sites of Interest, listed below, answer the following questions for page 6 of your portfolio:

Go to The Image site. Click on "mineral gallery". From the mineral list choose quartz.
1. Where does the name "quartz" come from? 2. Click on the enlarged images at the bottom of the page. What are the colors of quartz for images 3 and 4?
Go back to the home page and click on "Gemstone gallery" then "Beryl".
3. What are the names for blue and green beryl?
Read "Gem info" on this page.
4.Which is one of the most valuable gems?
5. What impurities give the color to emerald and aquamarine respectively? Click on the photo of green beryl to see a good picture of emerald (ignore the label "golden beryl").

Sites of Interest

http://www.theimage.com/	The Image. Photos of minerals and gems. Click on Mineral Gallery and choose a mineral to view photos and properties of that mineral. The Gemstone Gallery has photos of gem minerals.
http://web.wt.net/~daba/Mineral/	Mineral Database. There are descriptions of close to 4,000 mineral species The descriptions include mineral properties beyond the scope of an introductory geology course, however, there are links to other sites that include pictures of minerals.
http://www.man.ac.uk/Geology/MineralWeb/Mineral_Web.html	Mineral Web. Crystal structures are displayed in 3-D. The structures rotate and you can manipulate the rotation using a mouse. You must install CHIME, a program for viewing the structures. CHIME can be downloaded easily from this site. Once installed, take a look at the crystal structures of diamond, olivine, muscovite and other minerals. You can also observe the various silicon-oxygen tetrahedron structures