The color of the cobalt streak is blue
Blue
Yes. Its Mohs hardness is in the range of 5, and minerals (or metals, as is the case here) will streak up to a hardness of about 7. For a quick review of what streak is and how it originated, use the link to the Wikipedia article.
there is no name for the color, but there is the "streak" of a mineral, meaning the color of its streak.
A streak that has color or no color.
The color of a mineral in powdered form is called the streak color.
the color of the streak for dolomite is white
the streak color is Dark Green
The streak color of calcite is white.
The streak color of calcite is white.
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
there is no name for the color, but there is the "streak" of a mineral, meaning the color of its streak.
white streak