" Perhaps we painted on our own skin, with ochre and charcoal, long before we painted on stone. In any case, forty thousand years ago, we left painted handprints on the cave walls of Lascaux, Ardennes, Chauvet.
The black pigment used to paint the animals at Lascaux was made of manganese dioxide and ground quartz; and almost half the mixture was calcium phosphate. Calcium phosphate is produced by heating bone four hundred degrees Celsius, then grinding it.
We made our paints from bones of the animals we painted.
No image forgets this origin. "

― Anne Michaels , The Winter Vault