1. MINERAL 1 Acid Test: (-) Observe color, luster, streak as shown
MINERAL 1 Acid Test: (-) Observe color, luster, streak as shown. This mineral cannot be scratched by a fingernail or a piece of copper, but can be scratched by an iron nail and glass.
STREAK

2. STREAK - none, scratch only
MINERAL 2 Acid Test: (-) Observe color, luster, streak as shown.  This mineral can only be scratched by diamond.  Note the hexagonal crystal form.
STREAK - none, scratch only

3. MINERAL 3 Acid Test: (-) Observe color, luster, streak as shown
MINERAL 3 Acid Test: (-) Observe color, luster, streak as shown.  This mineral cannot be scratched by a fingernail or iron nail.
The mineral cannot scratch glass or a ceramic tile.
STREAK - look closely

4. MINERAL 4 Acid Test: (-) Observe color, luster, streak as shown
MINERAL 4 Acid Test: (-) Observe color, luster, streak as shown.  This mineral can be scratched by everything except a piece of chalk.
STREAK - look closely

5. STREAK - none, scratch only
MINERAL 5 Acid Test: (-) Observe color, luster, streak as shown.  This mineral can only be scratched by Mineral 2 and Mineral 10.
STREAK - none, scratch only  

6. MINERAL 6 Acid Test: (+) Observe color, luster, streak as shown
MINERAL 6 Acid Test: (+) Observe color, luster, streak as shown.  This mineral can scratch a fingernail.
It cannot scratch copper, and is easily scratched by a nail or glass.                                                                                                                             
STREAK - look closely

7. MINERAL 7 Acid Test: (-) Observe color, luster, streak as shown
MINERAL 7 Acid Test: (-) Observe color, luster, streak as shown.  This mineral cannot usually scratch a ceramic tile. A steel file cannot scratch the mineral. This mineral can scratch glass and a steel file.  Notice the crystal structure.                                                                                                                         
STREAK - colorless

8. MINERAL 8 Acid Test: (-) Observe color, luster, streak as shown
MINERAL 8 Acid Test: (-) Observe color, luster, streak as shown.  This mineral can barely be scratched by a fingernail. This mineral can scratch chalk STREAK - look closely

9. MINERAL 9 Acid Test: (-) Observe color, luster, streak as shown
MINERAL 9 Acid Test: (-) Observe color, luster, streak as shown.  This mineral can be scratched by a ceramic tile and diamond. It can scratch copper, a nail, and glass.      STREAK - look closely

10. MINERAL 10 Acid Test: (-) Observe color, luster, streak as shown in ring setting. 
This mineral cannot be scratched by anything.        STREAK - none, scratch only