Reply #100: Red ochre and vermillion in a collagen tempera medium...

[SidDithers]

http://mcri.org/home/section/63-64/the-shroud-of-turin

According to Dr. Walter McCrone and his colleagues, the 3+ by 14+ foot cloth depicting Christ’s crucified body is an inspired painting produced by a Medieval artist just before its first appearance in recorded history in 1356.

The faint sepia image is made up of billions of submicron pigment particles (red ochre and vermilion) in a collagen tempera medium. The pigments red ochre and vermilion with the collagen tempera medium was a common paint composition during the 14th century; before which, no one had ever heard of the Shroud.

Sid