Assignment:
1. Your new job is to evaluate jewelry for possible forgery. Based upon the two tables in Section 20.3 of the text, discuss the best tests for the following.
a) to see if something is real gold or simply "fools gold". You probably want look up "fools gold mineral" in Wikipedia to get the technical name for this mineral.
b) to see if a crystal is a real diamond or just quartz
2. Questions about density (SHOW YOUR WORK)
a) Based upon our discussion in class where a gallon of water weighs a little bit more than 8 pounds, how much (in pounds) would a gallon of olive oil weigh? (density of olive oil given in Aug 31 lecture)
b) Your objective is to find the density of an unknown mineral. You weigh it and find that it weighs 150 grams. Then you use the water displacement method- before you drop the sample in, your level is 110 milliliters. After you drop the mineral in, it reads 142 milliters. What is the density? Which of the 3 minerals that we looked at in class does this come closest to?
3. Based upon Section 20.9 of your text- the section on "Classifying metamorphic rock".
a. Name 3 foliated metamorphic rocks. Which kind of rock are they formed from?
b. Which of the three forms at the highest temperature and pressure? Which forms at the lowest?
c. How does foliation differ from sedimentary layering?
4. Based upon Sections 20.6 and 20.7 as well as class discussion, give 4 differences between granite and basalt.
5. Identify the two unknown rocks shown in the recorded video- and justify your answers. For full credit, you should have at least two supporting reasons for each identification.
Attachment:- Rocks and Minerals.rar