Where is Iron Ore (Limonite/Goethite) found?
Limonite/Goethite
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Open the appIron Ore (Limonite/Goethite) occurs in specific geological environments. Knowing where to look, and in what kind of rock, is the difference between going home empty-handed and finding a great specimen.
Where to find Iron Ore (Limonite/Goethite)
Mesabi Range, Minnesota, USA
Historically a major source of iron ore, including significant goethite-rich taconite formations.
Krivoy Rog, Ukraine
One of the world's largest iron ore basins, containing various iron oxides including goethite.
Minas Gerais, Brazil
Known for vast iron ore deposits, including those rich in goethite and hematite.
Pilbara Region, Western Australia
A globally significant iron ore province, with some deposits containing goethite.
Lorraine Basin, France
Historically important for its oolitic iron ores, which are often limonite-rich.
Collecting tips
- Look for Rusty Stains. Limonite and goethite are often associated with rusty-colored stains on rocks and in soils, indicating the presence of oxidized iron.
- Check Weathering Zones. Explore areas where iron-bearing rocks have undergone significant weathering, such as outcrops, stream beds, and road cuts.
- Examine Boggy Areas. Bog iron deposits can be found in swampy or marshy environments where iron has precipitated from groundwater.
- Observe Gossans. In mining districts, look for gossans (iron-rich caps) over sulfide ore bodies, which often contain limonite and goethite.
- Perform a Streak Test. The characteristic yellowish-brown to brownish-yellow streak is a key diagnostic feature for limonite/goethite, differentiating it from hematite (red streak) and magnetite (black streak).
Quick Check
- Color:
- Yellowish-brown to dark brown
- Luster:
- Earthy, dull, submetallic
- Streak:
- Yellowish-brown to brownish-yellow
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