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Naturally occurring red ochre in Northumberland
© Copyright Andrew Curtis
Red ochre cave painting of bison from Altamira, Spain (c.15,000 BCE)
Image from Wikipedia
BL, Harley MS 7653, fol. 1v
Detail of the Harley Prayerbook (late eighth/early ninth century). The initials are highlighted with red ochre, orpiment (yellow) and verdigris (green)
Naturally occurring red ochre in Northumberland
© Copyright Andrew Curtis
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