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"TWINING <br /> CONCRETE INSIGHT <br /> Morrison Quarry Rock Petrography Page 32 <br /> r A, 4 <br /> Tr ? • ✓� <br /> _r ,^A <br /> IL <br /> - �' � :....ti. _, •fir" "a, <br /> (a) <br /> r <br /> i <br /> �.1 <br /> t <br /> (b) <br /> Figure 4.4e. 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.Yellow arrows <br /> indicate feldspar grains.Blue arrows indicate biotite grains. <br /> Report No. 227893.d 22 November 2022 <br />