What describes color and streak?

Streak is the color of a crushed mineral's powder ... Most light colored, non-metallic minerals have a white or colorless streak, as do most silicates, carbonates, and most transparent minerals. The streak test is most useful for identifying dark colored minerals, especially metals.

Explanation:

The streak of a mineral is the color of the powder produced when it is dragged across an un-weathered surface ... If no streak seems to be made, the mineral's streak is said to be white or colorless. Streak is particularly important as a diagnostic for opaque and colored materials.

Streak is the color of a crushed mineral's powder ... Most light colored, non-metallic minerals have a white or colorless streak, as do most silicates, carbonates, and most transparent minerals. The streak test is most useful for identifying dark colored minerals, especially metals.