The Planted Tank Forum - View Single Post - Geologists Out There?
View Single Post
post #6 of (permalink) Old 10-15-2012, 09:44 PM Thread Starter
Algae Grower
emilmiot's Avatar
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  
For the best viewing experience please update your browser to Google Chrome