Figure F27. Brucite alteration is particularly common in dunite of Hole 1274A. A. Photograph of hand specimen of brucite-altered dunite (interval 209-1274A-20R-1, 141–149 cm). B. XRD analysis of Sample 209-1274A-20R-1, 141–144 cm, shows that brucite alteration is particularly prominent in this dunite. However, brucite and serpentine are indistinguishable in hand specimen.

Figure F27. Brucite alteration is particularly common in dunite of Hole 1274A. A. Photograph of hand specimen of brucite-altered dunite (interval 209-1274A-20R-1, 141–149 cm). B. XRD analysis of Sample 209-1274A-20R-1, 141–144 cm, shows that brucite alteration is particularly prominent in this dunite. However, brucite and serpentine are indistinguishable in hand specimen.