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hematite magnetite goethite

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Control of Earth-like magnetic fields on the

2016年7月26日  Hematite and goethite are the two most abundant iron oxides in natural environments. Their formation is controlled by multiple environmental factors; therefore,

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Comparison of magnetite, hematite and goethite amendment and

2023年4月25日  The magnetite, hematite and goethite capping all can be effective for the suppression of endogenous P release from sediment into OW under anoxic conditions,

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Beneficiation of low-grade, goethite-rich iron ore using

2021年6月1日  Goethite to magnetite conversion occurred at 600 °C in a 40:60 CO/CO 2 gas atmosphere. • A + 62 wt% Fe blast furnace pellet concentrate was produced with >

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The Magnetic and Color Reflectance Properties of

2021年12月30日  Hematite is a canted antiferromagnet with reddish color that occurs widely on Earth and Mars. Identification and quantification of hematite is conveniently achieved through its magnetic and color

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Textural complications of banded iron formation and the potential ...

2023年9月13日  Magnetite, martite, goethite, and quartz are detected as the main components of the oxide-rich facies, while epidote, stilpnomelane, ... (magnetite,

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Production and in situ transformation of hematite into magnetite

2019年8月5日  The transformation of hematite to magnetite occurs at 623 K (for biomass/nitrate mixture) and 723 K (for biomass/goethite mixture). The formation of

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Topotactic transformations of goethite and lepidocrocite

2005年5月1日  Goethite (α-FeOOH), lepidocrocite (γ-FeOOH), hematite (α-Fe 2 O 3) and maghemite (γ-Fe 2 O 3) constitute the main natural occurrences with magnetite (Fe 3 O

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Bulk and key surface structures of hematite, magnetite, and

2009年10月1日  The iron oxides hematite, magnetite, and goethite were studied with density functional theory to establish a consistent set of structures for both the bulk

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