Question

As rock are made up of one or more minerals they do not have a definite chemical composition.

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Answer 1

Answer:

A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties. Common minerals include quartz, feldspar, mica, amphibole, olivine, and calcite.

Step-by-step explanation:

First, a rock is composed of one or more minerals and sometimes mineraloids but do not have a crystal structure. A mineral is a chemical substance made up of one or more chemicals having a definite crystal structure. Rocks do not have a definite chemical composition whereas minerals do.