GEOLOGY

Detailed explanation-1: -Explanation: Lustre is entirely independent of colour of the mineral. A deeply coloured mineral may be lustreless and vice-versa.

Detailed explanation-2: -lustre, in mineralogy, the appearance of a mineral surface in terms of its light-reflective qualities. Lustre depends upon a mineral’s refractive power, diaphaneity (degree of transparency), and structure.

Detailed explanation-3: -A minerals luster is produced by its ability to transmit light. Opaque minerals always have a metallic luster because they do not transmit any light.

Detailed explanation-4: -Luster describes how a mineral appears to reflects light, and how brilliant or dull the mineral is. The terms used to describe luster are: Metallic (also known as splendent) Submetallic.

Detailed explanation-5: -Luster is a property that describes how light is reflected on the surface of a mineral. It is one of the properties mineralogists look at when trying to determine the identity of a mineral.