silver or white
Paolo was measuring the streak of the mineral. The streak is the color of the powder that a mineral leaves when it is scraped across a hard surface, such as a tile. This property can help identify the mineral, as the streak color may differ from the mineral's external color.
Different minerals have different colors, actually.
The term for this that I've always heard is "streak".
Hardness and streak color are very important. The color of the mineral helps some, as well.
Color, streak color, hardness, cleavage, and chemical.
black/silver
It's called the minerals streak
The mineral that fits the description provided is hematite. This mineral has a metallic luster, silver color, black streak, and contains iron. Hematite is commonly used as an iron ore and displays these characteristic properties.
The streak of the mineral is the mineral's powder color
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.
Streak refers to the color of a mineral in powder form.
Color is the observable color of a mineral specimen in natural light. Streak is the color of a mineral when powdered. The color of a specific mineral specimen may be different than its streak color. Because many impurities can alter the color of a mineral, but not the streak, streak is a more accurate predictor in mineral identification.
there is no name for the color, but there is the "streak" of a mineral, meaning the color of its streak.
The color of a mineral's powder found by scratching the mineral on a white tile is referred to as the mineral's streak color.
The color of a mineral's powder is its streak. This is the color of the powdered form of the mineral when it is scraped against a hard surface. Streak is a more reliable indicator of a mineral's identity than its exterior color.
The color of a mineral in powdered form is called the mineral's Streak
No, streak color can vary depending on the mineral. Streak color is the color of the powdered form of a mineral, which may be different from the color of the mineral itself.