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Geoscience Letters

Official Journal of the Asia Oceania Geosciences Society (AOGS)

Fig. 6 | Geoscience Letters

Fig. 6

From: Discovery of a conical feature in Halmahera waters, Indonesia: traces of a late-stage hydrothermal activity

Fig. 6

XRD patterns of clay and silt sediment samples on the Yudo Sagoro Hill using copper (Cu) radiation, with reference to crystallography.net/cod. a Sampling station (lon: 129.4235° E; lat: 0.9913° N; depth: 411 m). b Overall XRD diffractogram showing peaks of illite (Ilt), kaolinite (Kao), quartz (Qz), and calcite (Cal). The peaks of each indicated mineral are shown in c

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