It often does not match the observable color of the specimen. Differences between streak and observable color can be due to inclusions, staining, refraction, impurities, or exposure to heat and radiation.
The 'streak', or powdered mineral, will not always match the specimen's observed color.
A streak plate is used to determine the streak colour of a mineral. You take the mineral and scratch it against the streak plate, and it will create a coloured streak on the plate. The streak is not always the same colour as the mineral itself.
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.
The term for this that I've always heard is "streak".
The mineral Quartz leaves a colorless streak.
The streak of the mineral is the mineral's powder color
The lack of a streak would indicate that the mineral is harder than the streak plate, or the color of the streak is the same as the color of the streak plate.
Streak is more useful for mineral identification than color because streak shows the true color of the mineral in powdered form, which may differ from its color in its solid form. This can provide more accurate information about the mineral composition. Streak is also less affected by impurities or surface coatings that can alter the color of the mineral.
The color of a metallic streak is typically a dark gray or black color. This is because the streak left behind by a metallic mineral is the color of the powdered form of the mineral, which is often dark due to the presence of metal atoms.
The color of a mineral in powdered form is called the mineral's Streak
The test is called a streak test and it leaves a powdered form of the mineral on the porcelain. The powdered mineral reveals the true color, of the mineral specimen, which may or may not match the color of the specimen.
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.