Use of the Munsell Soil Color Chart is advocated for rocks in the hue range of red, yellow, brown, and orange. This chart has six times as many color chips in this important range of rock colors as the Rock-Color Chart. A standardized value-chroma terminology is advocated, constant over all hues, such that each color chip has its own unique name, and the whole is tied together by a simple mnemonic device.

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