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Figure F4. X-ray diffraction pattern obtained on nonoriented bulk rock powder, Hole U1346A. No peak characteristic of smectites is observed in the 12.5–15 Å area. Dashed-line area corresponds to the relative position of (010) peaks of clay minerals. Small peaks at 10 and 1.517 Å indicate celadonite, and a small peak at 9 Å indicates zeolite (e.g., heulandite series). Nonattributed peaks correspond mainly to primary minerals (i.e., feldspar).

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