Goethite
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Goethite is a mineral of the diaspore group, consisting of iron oxide-hydroxide, specifically the α-polymorph. It is found in soil and other low-temperature environments such as sediment. Goethite has
Goethite 169735
Unusual specimen of goethite replacing a gypsum stalactite; the center is hollow. From Santa Eulalia, Chihuahua, Mexico.
A microscopic picture of goethite (name misspelled on picture)
Iridescent goethite, Filón Sur Mine, Tharsis, Huelva, Spain
Iron ore
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Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rus
Goethite
…be flaw-insensitive, which accounts for their extreme tensile strength of 3.5–6.0 GPa and elastic modulus of 120±30 GPa. Its main modern use is as an iron ore, being referred to as brown iron ore. Goethite is an important component of ochre pigments, and has been heat-treated for use as a red pigment since…
Hematite, the main iron ore found in Brazilian mines
Stockpiles of iron ore pellets like this one are used in steel production.
An illustration of iron ore being unloaded at docks in Toledo, Ohio
Banded iron rock, estimated at being 2.1 billion years old