The Planted Tank Forum - View Single Post - Geologists Out There?
View Single Post
Old 10-15-2012, 08:44 PM   #6
Algae Grower
emilmiot's Avatar
PTrader: (0/0%)
Join Date: Feb 2012
Location: Southeast Minnesota
Posts: 18

Callyft, I think you nailed it on the head! A couple of google image searches matched what I have with "banded iron formation". Found a good description of the rock contents on one site: "alternating bands of red chert (jasper; cryptocrystalline quartz - SiO2), red hematite (iron oxide - Fe2O3), and silvery-gray specular hematite (iron oxide - Fe2O3)."
The Fraternity of Dirt #108
emilmiot is offline   Reply With Quote