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�00 <br /> "TWINING <br /> CONCRETE INSIGHT <br /> Morrison Quarry Rock Petrography Page 65 <br /> At <br /> Y l r, J <br /> ok <br /> (a) - <br /> - J <br /> r � <br /> (b) <br /> Figure 4.9d. Sample HDR-005 (191.0-191.8). Transmitted light photomicrograph of thin section showing <br /> detail of rock in(a)plane-polarized and(b)cross-polarized light.Red arrows indicate quartz grains.Blue and <br /> green arrows indicate foliated muscovite and chlorite grains,respectively <br /> Report No. 227893.d 22 November 2022 <br />