Graham Eaton / Hematite, Fe2O3 (Ferric Oxide) or Kidney Ore, from Egremont, Cumbria, UK
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John Cancalosi / Magnetite (Fe3O4, ferrous and ferric oxide), an important ore of iron that is naturally magnetic. Huaquio Mine, Potosi, Bolivia
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John Cancalosi / Magnetite (FeO4, ferrous and ferric oxide), an important ore of iron that is naturally magnetic. Yinnietharra, Western Australia
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Visuals Unlimited / Black mountain area at Dallol, 1926 crater (Black lake)., Afar Region, Northern Ethiopia.Colours of the geothermal area derive from ferrous chloride, iron hydroxide (both greenish white) ferric chlori...
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Visuals Unlimited / Colorful hot springs deposits, Afar Region, Northern Ethiopia.Colors of the geothermal area derive from: ferrous chloride, iron hydroxide (both greenish white) ferric chloride (yellow-brown) iron oxid...
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Visuals Unlimited / Colorful hot springs deposits, Afar Region, Northern Ethiopia. Colors of the geothermal area derive from: ferrous chloride, iron hydroxide (both greenish white) ferric chloride (yellow-brown) iron oxi...