Inorganic Pigments

Pigments• Any intensely coloured compound

used to colour other materials.• They may be inorganic compounds

(usually brighter and longer-lasting) or organic compounds.

• white - titanium dioxide.• Carbon black• Iron oxides - browns, ranging from

yellowish through orange to dark brown.

• Chromium compounds yield chrome yellows, oranges, and greens;

• cadmium compounds brilliant yellows, oranges, and reds.

• Prussian blue• http://www.britannica.com/ebc/article-

9375258?query=Prussian%20blue&ct=

http://www.culture.gouv.fr/culture/arcnat/lascaux/en/

Great Hall of the Bulls

Mainly metal oxides, iron and manganese, were used. No trace of charcoal has been found contrary to the caves in Lot, Ariège or Ardèche. This region has many manganese deposits, a phenomenon which didn't escape the notice of Palaeolithic man.

Chumash Rock Paintings

http://www.sbnature.org/research/anthro/chumash/pcart.htmShamans, or Chumash priests, are thought to have made these paintings to

influence supernatural beings and forces to intervene in human affairs. Red - iron oxide (hematite). Black - charcoal or from manganese oxide.White - gypsum or diatomaceous earth.

The Anza-Borrego Desert's Forgotten Artist

• The Indians of the Anza-Borrego Desert, the Cahuilla, Cupeño, Diegueño, and Kumeyaay, left a legacy of art: an open-air gallery of rock art. These petroglyphs and pictographs are eyewitness accounts, vivid on-the-scene reports that give us some idea of what was important to the people who once inhabited this desert.

• http://www.anza-borrego.org/04rockart_main.htm

C h e m i s t r y & A r t

Lead-tin yellowPbSnO4

Cinnabar, VermillionHgS

VerdigrisCu(OAc)2 Cu(OH)2 5H2O

Red Ochre, red earth Fe2O3

Prussian blueFe4[Fe(CN)6]3

Viridian Cr2O3

http://www.sewanee.edu/chem/Chem&Art/ http://webexhibits.org/pigments/intro/early.html