Sample M-3

Record all answers on your Lab sheet

Sample M-3: ___________________ (leave this blank until you have tested the mineral)

Color of mineral: _________________ Color of streak: _________________

Luster: (circle one on your sheet) Metallic (looks like a metal) Nonmetallic (doesn't look like a metal)

Cleavage (can see smooth flat surfaces) or fracture (random breaking)

Hardness: M-3 has a hardness of 6 (if the number of hardness is higher it will scratch a lower number)

Can you scratch the mineral with your fingernail? yes or no (your fingernail has a hardness of 2.5)

Does the mineral scratch the penny? yes or no (a penny has a hardness of 3)

Does the iron nail scratch the mineral? yes or no (an iron nail has a hardness of 5)

Does the mineral scratch the glass plate? yes or no (glass has a hardness of 7)

Use the flow chart below to name the mineral based on your findings. Fill in mineral name on Sample M-3 line.