it can be white or gray but the word is 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.
The color of the powder left on the rough surface by a mineral is called its streak. The streak plate is a hard surface that helps to determine the different shades and characteristics of the minerals that is rubbed on it.
Color is not a good identifier of minerals.
The powder indicates the true color of the mineral and is an aid in mineral identification. That can also be called a streak.
Because some minerals have either multiple colors or their color may have faded away over the years
there is no name for the color, but there is the "streak" of a mineral, meaning the color of its streak.
It's called the minerals 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.
The color of a mineral in powdered form is called the streak color.
color of the powdered form of the mineral
i believe different grades of gun powder
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.
Different powdered minerals have different colors. Yellow minerals include millerite and colusite. Blue minerals include aubertite and borax. Green minerals include zircon and duggenite. Reds include cuprite and spiroffite. Minerals come in many different shades.
StreakColor of the mineral when it is powdered.Grind a small amount of a mineral into a powder on a porcelain streak plate and determine the color of the powder.
Different minerals have different colors, actually.
Minerals can be identified by their streak, which is the color of the mineral when it is broken down into a powder. To test a mineral's streak, a streak plate (usually made of unglazed porcelain) is used. The streak is usually compared to a streak color chart, which contains the colors of a variety of minerals. To test a mineral for its streak, take a small piece of the mineral and rub it on the streak plate. The resulting powder is then compared to the streak chart to identify the mineral. Streak is an important property of minerals because it is more reliable than the external color of the mineral. External color can be altered by impurities and oxidation, but the streak of a mineral does not change. Therefore, testing a mineral's streak is an effective way of identifying it.When identifying minerals according to streak, it is important to consider the following properties: Color - the color of the powder when rubbed on the streak plate. Luster - the shine of the powder when rubbed on the streak plate. Texture - the feel of the powder when rubbed on the streak plate. Opacity - the transparency of the powder when rubbed on the streak plate.By considering these properties when testing a mineral's streak, it is possible to identify the mineral accurately and quickly.
dolomite