factors affecting water clarity MN

[popolarbear]

ok,this would be also an odd comment but interesting. i once was camping on the river at a location were we had camped(and others) so many times that there just was not enough logs to burn. i found one large one that after some pulling we pulled out of the hill side. it was strangely dry enough to burn along with several other that we scavanged. after all night of burning it was still partialy left over. it had a weird coloration to the remianing ashlike burnt reminant. and what was left was hard like iron. i was woundering if this piece i pulled out of the bank was perhaps partialy replaced by underground mineralization..or partialy fossilized??? im sure that bank was there for hundreds of years..