Light-generating compositions coloured

Fig. 5. BSE image of the view shown in Fig. 4(A). SI displays a light colour, whereas the surrounding S2 (medium grey) is characterized by a variable internal composition and complex zoning. S3 is a relatively homogeneous, late-generation pore-filling cement. Note the irregular dissolution boundary between S1 and S2, and between S2 and S3 (arrows). These cement relationships are typical of Tirrawarra Sandstones. Sample Ml-9598, Moorari 1, 2925.5 m.

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