Under the microscope – ash of Eyjafjallajökull volcano – VII

24 04 2010
glass volcano volcanic ash Eyjafjallajökull Iceland eruption

Green glass shard that fell as volcanic ash on Sweden 15th-16th April from the eruption of Eyjafjallajökull. Scale is 25 microns. This particle was removed from a larger, 1mm ash particle and viewed with a Zeiss microscope without using crossed polarizers, like in the last post. The colour in this photo is entirely due to the presence of iron and other metals in the glass.

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