| ANSWERS TO PROBLEM SET 6--STUDY GUIDE |
| Problem 1 | Problem 2 | Problem 3 | Problem 4 |
| 1 X | 1 C | 1 B | 1 sapphire |
| 2 L | 2 A | 2 D | 2 sphalerite |
| 3 R | 3 A | 3 J | 3 enargite |
| 4 E | 4 E | 4 O | 4 witherite |
| 5 I | 5 D | 5 C | 5 fluorite |
| 6 Z | 6 B | 6 B | 6 halite |
| 7 O | 7 C | 7 E | 7 wavellite |
| 8 Y | 8 C | 8 B | 8 cassiterite |
| 9 U | 9 B | 9 F | 9 covellite |
| 10 S | 10 D | 10 I | 10 pyrrohite |
| 11 C | 11 H | 11 monazite | |
| 12 D | 12 K | 12 arsenopyrite | |
| 13 N | 13 G | 13 siderite | |
| 14 A | 14 O | 14 wolframite | |
| 15 Q | 15 I | 15 molybdenite | |
| 16 marcasite | |||
| 17 chromite | |||
| 18 pyrite | |||
| 19 ilmenite | |||
| 20 kernite |