2006-10-21 12:49:56 · 3 answers · asked by Guido F 2 in Science & Mathematics ➔ Earth Sciences & Geology
It has to do with the hardness and residue left from the rock... there are many rocks like that
2006-10-21 12:57:48 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Look at the composition. It is a mineral composed of elements. Fluorite = calcium fluoride, a halite.
Hematite, for example, can often look black yet has an orange streak from the iron content. The principal components/elements of the mineral give it its characteristic streak.
2006-10-21 14:31:05 · answer #2 · answered by dunno 2 · 0⤊ 0⤋
A streak is scratching on a tougher floor and you have a tendency to get extra effective than in simple terms the floor of the rock. Sometiems streaks are extremely diverse than the plain colour of the rock. extremely some rocks, may well be white, working example, yet their streaks will probable have some characteristic colour.
2016-10-15 06:53:12 · answer #3 · answered by ? 4 · 0⤊ 0⤋