Question

1. the color of a mineral in powdered form

color
streak
hardness
cleavage/fracture
hardness
luster

Explanation:

The streak of a mineral is defined as the color of the mineral in its powdered form. It is obtained by rubbing the mineral on a streak plate (unglazed porcelain) and observing the color of the powder left behind. Color refers to the general visual color of the mineral specimen, hardness is a measure of a mineral's resistance to scratching, cleavage/fracture relates to how a mineral breaks, and luster describes the way a mineral reflects light.

Answer:

streak