A minerals is how it reflects light or how shiny it is

Luster

Explanation:

Luster is how the surface of a mineral reflects light. It is not the same thing as color, so it crucial to distinguish luster from color. For example, a mineral described as “shiny yellow” is being described in terms of luster (“shiny”) and color (“yellow”), which are two different physical properties.

so what is the problem with your lab report and whats the subject of the lab report? i will you