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�00 <br /> "TWINING <br /> CONCRETE INSIGHT <br /> Morrison Quarry Rock Petrography Page 19 <br /> •t'1 r <br /> (a) lip <br /> k -low .- <br /> T <br /> V. <br /> a <br /> i**' <br /> (b)L <br /> Figure 4.2f. Sample HDR-002 (112.0-112.4). Transmitted light photomicrograph of thin section showing detail <br /> of rock in (a) plane-polarized and (b) cross-polarized light. Red arrows indicate quartz grains. Yellow arrow <br /> indicates calcite. Blue arrow indicates muscovite and/or subhedral talc grain. Orange arrow indicates <br /> reddish-brown clay material with silt to sand sized quartz grains. <br /> Report No. 227893.d 22 November 2022 <br />