GLY 4310	Name

Homework Exercise 1

Review of Silicate Minerals

The following homework is based on the Silicate Mineral lecture, as well as information from the textbook, Chapters 18 and 19. The PowerPoint version is available on the web pages.

1. What silicate subclass do the following minerals belong to? (1 point each)

Mineral	Silicate Subclass

A. Aegirine

B. Biotite

C. Epidote

D. Fayalite

E. Grossularite

F. Hornblende

G. Kyanite

H. Labradorite

I. Orthoclase

J. Tourmaline

2. Indicate if each of the following minerals is hydrous or anhydrous? (1 point each)

A. Actinolite

B. Augite

C. Kaolinite

D. Oligoclase

E. Nepheline

3. Match the mineral species with the group of which it is a member. Answers may be used once, more than once, or not at all. (1 point each)

Mineral Species

1. Albite

2. Almandine

3. Anthophyllite

4. Bytownite

5. Cristobalite

6. Diopside

7. Enstatite

8. Kirschsteinite

9. Nepheline

10. Phlogopite

11. Riebeckite

12. Sanidine

13. Sillimaniute

14. Smectite

15. Stilbite

16. Stishovite

17. Wollastonite

Group

A. Al2SiO5

B. Amphibole

C. Clay

D. Feldspathoid

E.Garnet

F. Mica

G. Plagioclase Felspar

H. Potassium Feldspar

I. Pyroxene

J. Pyroxenoid

K. Olivine

L. Silica

M. Zeolite

4. In both the Inosilicate groups Amphibole and Pyroxene, both orthorhombic and monoclinic structures exist. Explain what causes the difference in structure. (It is the same cause in both groups). 4 points

5. Indicate whether each of the following species is an amphibole or a pyroxene, and whether it is orthorhombic or monoclinic.

Mineral Species	Group	Symmetry

Ferrosilite

Grunerite

Hedenbergite

Tremolite