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Among the earliest pigments used by mankind, ocher has a yellow-orange to orange color and is made of varying proportions of iron oxide and clay. The world’s first known works of art, found in South Africa’s Blombos Cave and dated to 75,000 years ago, consist of ocher pieces engraved with abstract designs, and Cro-Magnon artists living about 10,000 to 40,000 years ago used ocher in their cave paintings. The 2nd-century BCE Egyptian Ebers Papyrus lists what non-artistic use for ocher? Discuss
Source: The Free Dictionary