div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentus-geological-survey-publications-warehouse-ktr-kiw-w-detection-ratio-geometrichtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: US Geological Survey Publications Warehouse · Ktr Kiw W Detection ratio Geometric mean ppm Geometric devi at ion ppm 20 30 50 10 15 CONCENrßA-TlOV OF COPPER 2 HISTOGRAM loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsinreader033viewer202206071060765c97ce9b6b290e1a78a3html5thumbnails1jpg width=140 height=200 divdiv