mineralogy Questions 1-29 are multiple choice and short answer: 2 points each 1.

Question

mineralogy Questions 1-29 are multiple choice and short answer: 2 points each 1. Zircon can be used to constrain a. CO, content of the early atmosphere. b. the composition of Earth's mantle. c. paleomagnetic pole reversals. d. the absolute ages of terrestrial rocks. A mineral appropriate for radiogenic age dating a. is resistant to chemical weathering. b. forms a solid solution with the radioactive element. c. can trap the daughter isotope. d. All of the above. 3. Hydrogen bonding in minerals a. reduces bond strength. b. reduces mineral density c. reduces directionality of bonds. d. All of the above. e. (a) and (b) only.

Explanation / Answer

multiple parts will do 4 parts according to chegg guidelines:

9 ) b) anisotropic. ---------------answer)

10) The extreme hardness of diamond is explained by : all atoms being bonded covalently.part a)

15) chemical composition of quartz is : SiO2

16) chemical composition of hornblende is : Ca2(Mg, Fe, Al)5(Al, Si)8O22(OH)2

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