it leaves a prodominite steel gray always always always
It is most likely going to have a greenish streak. It may also have a greenish black streak.
light brown
metalic
Magnetite can be black and it has a black streak. It is metallic and iron ore
Magnetite.Has metallic luster, silver color, black streak, and contains (Fe) Iron.
Magnetite
Yellow.
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.
the streak color is Dark Green
Magnetite can be black and it has a black streak. It is metallic and iron ore
The streak of a mineral is much more accurate in identifying a mineral than color. The streak of a mineral can distinguish minerals with metallic and non-metallic luster. For example, metallic minerals generally have a dark streak whereas non-metallic luster minerals often have a light colored streak.
Magnetite.Has metallic luster, silver color, black streak, and contains (Fe) Iron.
Magnetite
Magnetite
Yellow.
Graphite
Streak Test, because nonmetallic minerals typically streak colorless/white, and metallic minerals typically streaks dark/characteristic color.
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.
The streak many not match the visual color whatsoever. That is why you must do the test. For example, I streaked a piece of specular hematite yesterday, which was a very dark, (nearly black), metallic color. It streaked red though, as all hematites do.
dark streak