>>1598487On the bog iron / bacteria iron I will expound. What happens is water flows into a pond that's fairly acidic and the water contains iron in solution dissolved out of the surrounding minerals. This works best in areas with highly mineralized rocks like the Canadian Shield. Or in my case where I found it the Sechelt peninsula in the Karen range is all extremely mineralized. Once the water flows into a pond or a lake, the water in there is somewhat acidic and certain bacteria that obtain energy by chemosynthesis turn the iron in solution into solid iron mixed in with some other odds and ends like oxides. Under the right conditions, these bits of iron oxide 4 lumps called cocatonates.
The only reason I know shit like this is my dad did about 15 years of mining in Northern British Columbia before moving on to an easier job with union benefits on the boats, and I was bored kid in high school so is one of my courses in grade 8 I took a course in mineralogy 12 via correspondence. Pictures related. The polished split core samples are ones my dad collected from various mines in northern BC the small slender one is from a seam of gold in the Premier BC mine that a geologist gave him, and has about 5 oz of gold in the lower section of it
