1. MINERAL TRIVIA FINAL ROUND!

2. Round 3 – Question 1 Name a type of non-metal native element mineral

3. Round 3 – Question 2 X m S n is a general formula for sulfide minerals. Name three elements that can fill in for X.

4. Round 3 – Question 3 XY 2 O 4. Magnetite Fe 3 O 4 is type of spinel. What type iron cations occupy the X and Y sites The spinel group of oxides has a general formula of XY 2 O 4. Magnetite Fe 3 O 4 is type of spinel. What type iron cations occupy the X and Y sites?

5. Round 3 – Question 4 What is a possible anion in Halide minerals?

6. Round 3 – Question 5 What is a common chemical feature of sulfates, carbonate, and phosphates?

7. Round 3 – Question 6 Why is the Si-O bond in silicon tetrahedra strong?

8. Round 3 – Question 7 What is the Si x O y unit composition of sorosilicates?

9. Round 3 – Question 8 What silicate mineral group is characterized by double chain silicon tetrahedra?

10. Round 3 – Question 9 These pyroxenes display what feature?

11. Round 3 – Question 10 What type of silicate is quartz which would explain its lack of cleavage?

12. Round 3 – Question 1 Name a type of non-metal native element mineral. Sulfur, Diamond, Graphite

13. Round 3 – Question 2 X m S n is a general formula for sulfide minerals. Name three elements that can fill in for X. Fe, Cu, Pb, Zn, Ni,...

14. Round 3 – Question 3 XY 2 O 4. Magnetite Fe 3 O 4 is type of spinel. What type iron cations occupy the X and Y sites The spinel group of oxides has a general formula of XY 2 O 4. Magnetite Fe 3 O 4 is type of spinel. What type iron cations occupy the X and Y sites? Fe +2 in X site; Fe +3 in Y site

15. Round 3 – Question 4 What is a possible anion in Halide minerals? Cl, F, I, or Br

16. Round 3 – Question 5 What is a common chemical feature of sulfates, carbonate, and phosphates? All contain anionic complexes

17. Round 3 – Question 6 Why is the Si-O bond in silicon tetrahedra strong? 50-50 ionic-covalent bond, or electrostatic valence (e.v.) = 4/4, highest in silicate minerals

18. Round 3 – Question 7 What is the Si x O y unit composition of sorosilicates? Si 2 O 7

19. Round 3 – Question 8 What silicate mineral group is characterized by double chain silicon tetrahedra? Amphibole

20. Round 3 – Question 9 These pyroxenes display what feature? Exsolution

21. Round 3 – Question 10 What type of silicate is quartz which would explain its lack of cleavage? Tectosilicate or framework silicate

22. And the winners are...