it can be white or gray but the word is STREAK
The streak of the mineral is the mineral's powder color
Streak refers to the color of a mineral in powder form.
there is no name for the color, but there is the "streak" of a mineral, meaning the color of its streak.
Powder and color
As
Streak is the color of a crushed mineral's powder. The color of a mineral's powder may differ from the actual color of the mineral. This property can be useful for mineral identification.Almost every mineral has an inherent streak color, no matter what color the actual mineral is.
The powder indicates the true color of the mineral and is an aid in mineral identification. That can also be called a streak.
what is the color of the powder called that a mineral leaves when scratched across a special plate
The mineral is sratched on a unglazed white title the powder left is the is the color of the minerals streak which is used to find the name of the mineral and identify it.
The Color streak/streak.
Color is what you observe when you look at a mineral. Streak is the color of the mineral when in a fine powder form. This can be observed by drawing a sample of the mineral over an unglazed porcelain tile and noting the color of the line left on the tile.
streak.