Question

Suppose you have an unknown mineral sample. You can scratch the mineral with a pen knife but not with your fingernail. The mineral is most likely

a.talc
b. diamond
c. apatite
d.gypsum

Answer 1

C

Answer 2

D

Answer 3

D.

Answer 4

"What is the texture of SAMPLE 10?"

who knows...

Answer 5

the answer is C .....sample 10 is neither aphanitic nor phaneritic..its texture is vesicular

Answer 6

An igneous rock that forms after rapid cooling above the earth’s surface is characterized by

a. small crystals or no crystallization at all
b. large, well-defined crystals
c. many small crystals embedded within larger one