A circa 1850 "Hillotype" photograph of a colored engraving. Long believed to be a complete fraud, recent testing found that Levi Hill's process did reproduce some color photographically, but also that many specimens had been "sweetened" by the addition of hand-applied colors.
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Answer:
the feel, appearance, or consistency of a surface or a substance.
Explanation:
i dont know what u mean
The color is called streak which is the color of the mineral in powder form. :)