The color of the cobalt streak is 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.
the streak color is Dark Green
Perlite does not have a streak color because it is a volcanic glass that does not leave a streak on a streak plate.
The streak color of calcite is white.
The streak color of calcite is white.
Streak refers to the color of a mineral in powder form.
the color of the streak for dolomite is white
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 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.
Chert has no streak, it is too hard.
The streak color for wheat is white.
Copper typically has a streak color that appears reddish-brown. This streak color can be seen when copper is scratched on a streak plate to leave a mark.