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Saturday, November 3, 2007

More oily puddles

More oily puddles
Puddles in the Tasmanian bush often have an oily film. I've put up a photo before. It is (generally) not pollution, but is an iron oxide film caused by water interacting with the iron in the dolerite rock. This example in a muddy spot was particularly noticeable.

Iron oxide film in puddle, Hartz Mountains - 3 Nov 2007
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