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dimecres, 18 de maig de 2016

PREHISTORIC ART


Prehistoric Art: Unusual pigments

Stone Age artists relied on several different types of material to make the colour for their painting. Clay ochre was the main pigment and provided three basic colours: yellow, brown and numerous hues of red. For black pigment, artists typically employed either manganese dioxide or charcoal, or burnt bones (known as bone black). For white pigment, they used kaolin or ground calcite (lime white). These colourants were first ground up to powder (using animal shoulder bones as mortars), then mixed with cave water (high in calcium carbonate) vegetable juice, animal fats, blood, bone marrow, albumen, and urine to help it adhere to the cave wall. In addition, they used extenders like feldspar and biotite, or ground quartz and calcium phosphate (from crushed animal bone), in order to save on the pigment, to make the paint adhere more firmly to the cave wall and to prevent the paint from cracking when drying.

We tried with other kid of colours: curry, vinegar, flowers, squid ink, leafs... experimenting with unsual pigments and tools and having a great time, discovering we don't need tradicional media to create paintings.

Wanna see us on our working progress??




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