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Is Iron Oxide natural or synthetic?

Harper Davis | 2023-04-20 15:55:29 | page views：1698
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Harper Collins

Studied at the University of Amsterdam, Lives in Amsterdam, Netherlands.
Natural iron oxides are derived from hematite, which is a red iron oxide mineral; limonites, which vary from yellow to brown, such as ochers, siennas, and umbers; and magnetite, which is black iron oxide. Synthetic iron oxide pigments are produced from basic chemicals.
2023-04-20 15:55:29
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Mia Adams

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Natural iron oxides are derived from hematite, which is a red iron oxide mineral; limonites, which vary from yellow to brown, such as ochers, siennas, and umbers; and magnetite, which is black iron oxide. Synthetic iron oxide pigments are produced from basic chemicals.
Iron Oxide Pigments - USGS Mineral Resources Program
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