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"TWINING <br /> CONCRETE INSIGHT <br /> Morrison Quarry Rock Petrography Page 31 <br /> ' ' 1� <br /> J <br /> 41kk <br /> - 4t <br /> � . r <br /> .�._ <br /> (a) �_ =A. <br /> 7 <br /> (b) <br /> Figure 4.4d. Sample HDR-003 (53.0-53.6). 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. Blue arrows <br /> indicate foliated biotite grains. Green arrow indicates pyrite. <br /> Report No. 227893.d 22 November 2022 <br />