What determines the composition of a rock

Is determined by the percent of constituent of minerals and elements contained within it.

Composition of a rock is determined by the percent of constituent of minerals and elements contained within it.

Explanation:

The composition of a rock is decided by the % of the constituent minerals and components contained inside it.

The minerals that form up rocks have outlined chemical compositions and rigid atomic structures. once daylight strikes the rock's surface, the composition and atomic structure of the various minerals management the wavelengths they absorb or replicate.