Red ochre
From Wikinfo
Red ochre is a red pigment that has been used since prehistoric times throughout the world.
Chemically, it is anhydrous iron (III) oxide.
The word ochros traces to Greek meaning yellow, pale yellow.
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External links and references
References
- Adapted from the Wikipedia article, "Red_ochre" http://en.wikipedia.org/wiki/Red_ochre, used under the GNU Free Documentation License
