Figure F21. A. Photograph of a hand specimen of a typical example of completely talc-altered serpentinized harzburgite (interval 209-1268A-5R-2 [Piece 14, 55–64 cm]). B. XRD spectrum of sample in A shows that it consists almost entirely of talc.

Figure F21. A. Photograph of a hand specimen of a typical example of completely talc-altered serpentinized harzburgite (interval 209-1268A-5R-2 [Piece 14, 55–64 cm]). B. XRD spectrum of sample in A shows that it consists almost entirely of talc.