Raws li tsab xov xwm tshaj tawm hnub tim 8 Lub Kaum Ib Hlis, 2021, Lub Chaw Tshawb Fawb Txog Av ntawm Tebchaws Meskas (USGS) tau tshuaj xyuas cov hom pob zeb raws li Txoj Cai Zog Xyoo 2020, uas tau raug xaiv los ua cov pob zeb tseem ceeb hauv xyoo 2018. Hauv daim ntawv teev npe tshiab uas tau luam tawm, cov hom pob zeb hauv qab no tau raug pom zoo (raws li cov ntawv sau).
Aluminium, antimony, arsenic, barite, beryllium, bismuth, cerium, cesium, chromium, cobalt, chromium, erbium, europium, fluorite, gadolinium, gallium, germanium, graphite, hafnium, holmium, indium, iridium, liium, lanthanum, magnesium, Niobium, npib tsib xee, niobium, palladium, platinum, praseodymium, rhodium, rubidium, lutetium, samarium, scandium, tantalum, tellurium, terbium, thulium, tin, titanium, tungsten, vanadium, ytterbium, yttum.
Hauv Txoj Cai Lij Choj Txog Zog, cov zaub mov tseem ceeb yog txhais tias yog cov zaub mov uas tsis yog roj lossis cov khoom siv zaub mov tseem ceeb rau kev lag luam lossis kev ruaj ntseg ntawm Tebchaws Meskas. Lawv raug suav hais tias yog cov khoom siv tsis ruaj khov, Lub Tsev Haujlwm Saib Xyuas Sab Hauv Tsev yuav tsum hloov kho qhov xwm txheej tsawg kawg txhua peb xyoos raws li txoj kev tshiab ntawm Txoj Cai Lij Choj Txog Zog. USGS tab tom thov kom pej xeem tawm tswv yim thaum lub Kaum Ib Hlis 9th-Kaum Ob Hlis 9th, 2021.