Painted stones?

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Hob H
Hob Apr 13, 2008 22:32:22
Replying to Littlestone

Littlestone wrote:
Well, if the paints are inorganic, Mr H, they stand a fair chance of surviving (if they've been kept in a reasonably stable environment that is).
Apparently paint can sometimes survive for 5000yrs in the open air:
http://www.6d.fi/Lifestyle/page.2008-03-31.0662985477

L Littlestone
Littlestone Apr 14, 2008 10:23:25
Replying to Hob

Ah, thanks for that Hob - excellent article! and this bit is especially interesting -

“These paintings have survived thanks to the formation of a thin layer of silicon dioxide on the rock surface, which has protected them."