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�00 <br /> "TWINING <br /> CONCRETE INSIGHT <br /> Morrison Quarry Rock Petrography Page 45 <br /> i <br /> •Air. <br /> (a) <br /> i <br /> y i=_ <br /> h <br /> (b) <br /> Figure 4.6c. Sample HDR-004 (66.4-67.0). (a)Photograph showing detail of the polished surface. Scale shows <br /> millimeter increments. (b)Reflected light photomicrograph showing detail of the polished surface.Red arrow <br /> indicates quartz.Yellow arrow indicates feldspar.Blue arrow indicates biotite. Green arrows indicate pyrite. <br /> Report No. 227893.d 22 November 2022 <br />