1. Mineral Identification Review
Lab Practical

2. the powder form of a mineral
Streak
the powder form of a mineral

3. how light reflects off a mineral
Luster
how light reflects off a mineral
metallic
non-metallic
looks like a
metal
looks earthy, waxy,
greasy or brilliant
Link

4. Cleavage Vs. Fracture the mineral breaks in a predictable pattern
because of its arrangement of atoms
the mineral breaks randomly

5. Examples of Cleavage

6. Hardness Is it hard or soft? If it can scratch glass it is HARD
If it can’t scratch glass its SOFT

7. Recap! Factors you must know: Streak: yes or no
Luster: metallic or non-metallic
Cleavage or fracture
Hardness: can it scratch glass? Yes or no
Reference Table