Ironstone: Mineral information, data and localities.
Titanium Range? Breakthrough could lead to new kind of mining in NE Minn.
A: Commonly observed banded iron formation (BIF) alteration stages
Hematite (iron ore) (weathered zone in the Biwabik Iron-Fo…
Piece Of Itabirite Stone Isolated Stock Photo - Download Image Now - Red, Jasper - Mineral, Rock - Object - iStock
Overview of the mineralogy of the Biwabik Iron Formation, Mesabi Iron Range, northern Minnesota - ScienceDirect
Iron Ore: Geology, Mineralogy, Distribution and genesis
Fact check: No, the mineral withdrawal won't affect taconite mining - Duluth News Tribune
Mineralogical, chemical, and physical metallurgical characteristics of iron ore - ScienceDirect
Taconite. Taconite is an iron-rich (20-30%) sedimentary rock, in which iron-bearing layers alternate with quartz, chert, or carbonate. The iron conten Stock Photo - Alamy
Taconite (Biwabik Iron-Formation, Paleoproterozoic, ~1.878…
A creek with dark soil indicates a location rich in iron sand and magnetite. How much iron can a mineral prospector expect to find on average? - Quora
Banded Iron Formation - an overview
Mineralogy and Geology of the Taconites and Iron Ores of the Mesabi Range, Minnesota
Different Types of Iron Ore