Laterite

English: Images of laterites, bauxites and lateritization

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  Laterite (called đá ong in Vietnam) in Sơn Tây, Hà Nội, Việt Nam.
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  Cutting of laterite brickstones, Angadipuram, India
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  Abandoned laterite quarry. Angadipuram, India
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  Laterite monument. Angadipuram, India
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  Laterite formation on gneiss. Trivandrum, India
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  Laterite formation on basalt. Campinas, Brazil
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  Laterite formation on basaltic tuff, Vangaindrano, Madagascar
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  Mobilization and precipitation of iron in veins within kaolinized basalt. Hungen, Vogelsberg area, Germany
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  Laterite formation on serpentinite. Mayagüez, Puerto Rico
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  Soft nickel limonite below hard cuirass (Laterite on ultramafic rock). Yate, New Caledonia
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  Extensive bauxite layer (reddish-brown) on kaolinitic sandstone (white) at Pera Head. Bauxite deposit Weipa, Australia
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  Bauxite section on kaolinitic sandstone (white) at Pera Head (detail of preceding photo). Bauxite deposit Weipa, Australia
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  Laterite with relics of unweathered basalt. Puttur, India
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  Sample of laterite brickstone, Angadipuram, India (scale:1cm)
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  Lateritic concretion
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  Lateritic weathering shells around core of amphibolite.
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  Bauxite with core of unweathered parent rock, Kassa, Guinea
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  Bauxite specimen with relict stratification of the parent rock (slate), Fria, Guinea (scale:1cm)
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  Microscopic photo of a laterite thin section (length 1,25 mm) shows quartz relics (white) in voids of a ferrugineous matrix.
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  Microscopic photo of a bauxite thin section (length 0,82 mm) shows a relic of pyroxene in a gibbsite matrix.
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  Microscopic photo of a laterite thin section (length 1,25 mm) shows a first (grey matrix) and a second generation (yellowish vein) of kaolinite.
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  Cretaceous laterite exposed in Makhtesh Gadol, Israel.