red sediment in rain gauge

After last rain i noticed red sediment in rain gauge. Anyone got any idea what it could be? It is not flower pollen or sahara sand.

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Lava from Mount Etna? :wink: :wink:

Brick dust? - any building work going on near you?

Makes more sense than my idea… :roll: although, there is a lot of ash as rubbish from Etna, depends where Marko lives

Slovenia. I saw a NASA image but it showed Etna’s dust going in the wrong direction to reach Marko.

Ah, that too would rule out any lava also 8)

I noticed this sediment before Etna eruptions and also there are no building works in the neighborhood. I am suspecting cement kiln, located 10 km away. They are burning waste and car tires…

algae Haematococcus pluvialis

uauu, great this could be yes!

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I remembered reading this article back in 2015:
http://www.natureworldnews.com/articles/18158/20151113/blood-rain-mystery-solved-traveling-microalgae-turned-local-waters-red.htm

That same algae turn snow here red. See it a lot on the mountains flying. Big big patches of red. Ice worms also feed on it.