Fig. 9

Mineral combinations of each grain. Representative X-ray diffraction patterns obtained from 100 microns-sized fragment of each group. Each pattern was selected from the perspective that the most minerals are detected clearly. Ser: serpentine, Sap: saponite, Po: pyrrhotite, Pen: pentlandite, Mt: magnetite, Do: dolomite, Si: siderite. C0041 only shows sharp peaks of siderite