Fig. 7
(a) photo showing preferred orientation of fine talc shreds and disseminated fine opaques (the field of view 4 mm across, XPL), (b) A characteristic alteration model tremolite→chlorite→talc. Chlorite exhibits the columnar form of tremolite and in turn is altered to talc (the field of view 1 mm across, XPL), (c) A typical alteration scheme of iron-bearing chlorite to talc. Iron hydroxides possibly are released chlorite is presumably formed from the released Al during the alteration of chromite (the field of view 2 mm across, XPL), (d) alteration of chlorite to talc with remnants from cleavage planes and crystal from in matrix of talc (the field of view 1 mm across, XPL).
