Which option correctly identified the two main ways that minerals are classified
a. rarity and use
b. country of origin and use
c. crystal structure and chemical composition
d. use and chemical composition

I think the answer would be C. crystal structure and chemical composition, this is because crystal structure helps determain by the human eye what the mineral would be classisfied as. The chemical build up or composition helps indefenitly by breaking down the minerals make up. The answer is NOT D. use and chemical coposition. Use is absured, who who look at a mineral and say the use is... when they don't know what the mineral is yet. Use does not specify the mineral! (Sorry for my spelling) Hello there! If this answer was the most helpful one, brainliest it, rate, and thank! If it was somewhat good at least rate and thank me :) . Comments are always appreciated! ~Summer

all these collisions do one thing, and that thing is explained in the last option. when dusst, rocks and ice collide, they harden and form giant layers of rocks or hard ice.

d)   to harden materials to form different parts of earth’s layers

hope it ,

bioteacher101