Question

show how light is reflected on the surface. Minerals_____? ​

Answer 1

Answer:

Light reflects from both as it would from glass -- as with real glass the transparency is not the issue, but rather the reflectivity. The middle picture shows fluorite, also with a glassy luster, and the right hand picture shows two different dark minerals (pyroxene above and amphibole below).

Answer 2

Explanation

• The reflection of light off the surface of a mineral is Luster.

• To describe luster, mineralogists use particular terminology.
• The mineral's metallic or non-metallic status is one straightforward approach to classify luster.

• Most of the minerals that are shiny and opaque, like pyrite, have such a metallic luster.

• Non-metallic luster is seen in minerals such as quartz.