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The picture caption claims that the water's brown tint is caused by minerals. This needs a reference. Most brown water is due to tannins, from trees (in the northern mid-west) and other plants (or their decomposition products), and while you could argue that if the tannins are complexed with iron (which they tend to do) that a mineral is involved but it is less than accurate.98.17.180.195 (talk) 10:15, 21 July 2020 (UTC)[reply]
