Mineralogy. The line of coloured powder produced by scratching a mineral or fossil, or the mark made by rubbing it on a harder surface.
| 单词 | θ7545 |
| 释义 | the world > the earth > earth sciences > geology > mineralogy > [noun] > streak (1) streak1794 Mineralogy. The line of coloured powder produced by scratching a mineral or fossil, or the mark made by rubbing it on a harder surface. |
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