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The most notable thing about cave art is that the predominant colours used are black (often from charcoal, soot, or manganese oxide), yellow ochre (often from limonite), red ochre (haematite, or baked limonite), and white (kaolin clay, burnt shells, calcite, powdered gypsum, or powdered calcium carbonate). So when i got a tip that there might be some in a cave nearby, i didn’t wait long. Only pigments of mineral origin have survived to the present day
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Nevertheless, research has not, up to now, detected the presence of organic colours When i first thought about making pigments from scratch, manganese was at the top of my list The pigments used include oxides of iron and manganese, as well as charcoal.
The red colours were made from iron oxides, such as hematite
The black colours were made from either manganese dioxide or charcoal. The aim of this study was to verify several hypotheses concerning the techniques used by the painters of pech merle, and specifically by the one (s) of the black frieze. When carbon black is only detected as traces, its presence can be attributed to burning of the manganese black, with remains of wood charcoal from this burning operation getting accidentally mixed with the manganese black. Black pigments, often used for outlining figures or creating dramatic contrasts, were derived from two primary sources
