State whether true/false.

Geologists define a mineral as a “heterogeneous, naturally occurring substance with a definable internal structure.”

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True

False

answer is B.

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Detailed Solution

The above statement is false.
A mineral is a naturally occurring inorganic homogeneous solid mixture of various elements. Rocks are mixtures of uniform materials known as minerals. Even though more than 2000 minerals are identified, most rocks only contain a few that are abundantly present. The earth's heated magma at its core is the fundamental source of all minerals. Mineral crystals start to form as the magma cools. The magma's composition alters with depth as these first crystals sink there. As a result, a series of minerals are created in the rocks as the magma cools. A mineral can be found in various colours, hardnesses, crystal shapes, and densities.
The correct statement should be that Geologists define a mineral as a “homogenous, naturally occurring substance with a definable internal structure.”

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