Question

Which is characteristic of a mineral?

A.
It must be man-made and crystalline.

B.
It must be naturally occurring and amorphous.

C.
It must be man-made and amorphous.

D.
It must be naturally occurring and crystalline.

Answer 1

@iGreen

Answer 2

Do you think minerals are made by man?

Answer 3

No.

Answer 4

So it is not A or C

Answer 5

Correct.

Answer 6

"All other types of solid matter are amorphous or without a regular atomic arrangement. Metals and minerals are crystalline. Glass is amorphous. Depending upon its composition, the crystalline pattern of a mineral may not be visible in a hand sample."

Read this.

https://www.msnucleus.org/membership/html/k-6/rc/minerals/3/rcm3_4a.html

Answer 7

What do you think?

Answer 8

So, since it says metals and minerals are crystalline, then it would be D?

Answer 9

Yep, you got it.

Answer 10

Thanks.

Answer 11

No problem.