Streak is the color of a mineral powder. In many cases the apparent body color of a mineral is very different from its powder. Black hematite (left in photo) has a red streak. The green streak of malachite (right),however,is similar to its body color. A 'streak plate' is a hard porcelain tile that mineralogists typically use to create a powder when a mineral specimen is rubbed against it | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Arem, Joel |
Taille de l’image : | 3818 px × 2550 px |
Model Release : | Non requis |
Property Release : | Non requis |
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