CLAY (PETROGRAPHY)
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BTARGILLACEOUS ROCKS + SHALES + CLAYSLATE + CLAY + MUDS (PETROGRAPHY)
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UDC552.523
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Descriptor GERTON (PETROGRAPHIE)
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Descriptor ENGCLAY (PETROGRAPHY)
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Descriptor FREARGILES (PÉTROGRAPHIE)
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Variant GERGEMEINE TONE (PETROGRAPHIE)
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Variant GERTONE/GEMEINE TONE (PETROGRAPHIE)
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Variant ENGCOMMON CLAYS (PETROGRAPHY)
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Variant ENGCLAY/COMMON CLAYS (PETROGRAPHY)
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Variant ENGCLAYS/COMMON CLAYS (PETROGRAPHY)
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Variant ENGCLAYS (PETROGRAPHY)
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Variant FREROCHES SÉDIMENTAIRES/ARGILES (PÉTROGRAPHIE)
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NTBENTONITE (PETROGRAPHY)
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NTGLAUCONITE (PETROGRAPHY)
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NTPELITE (PETROGRAPHY)