Answered

18. Of the Earth's more than 2,000 identified minerals, only a small number are commonly found in rocks. This fact indicates that most:

A. minerals weather before they can be identified
B. minerals have properties that are difficult to identify
C. rocks have a number of minerals in common
D. exposed surface rocks are igneous



Answer :

GinnyAnswer

Final answer:

The Earth's identified minerals mainly consist of a small number of common minerals found in rocks.


Explanation:

Earth's more than 2,000 identified minerals are mainly composed of a small number of common minerals. For example, seven minerals make up a significant portion of Earth's crust. When examining rocks, it is common to find these common minerals present.


Learn more about minerals in rocks here:

https://brainly.com/question/38844144


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