Zinc isotopic evidence for recycled carbonate in the deep mantle

HIGHLIGHTS

• who: Xiao-Yu Zhang from the Zn isotopes Purification and isotopic analysis of Zn were performed at the Key Laboratory of Surficial Geochemistry, Ministry of Education, School of Earth Sciences and Engineering in Nanjing University, China, following previous procedures established by ref61. Approximately, .1-0., g of each sample and USGS (the United States Geological Survey) reference materials were completely digested by concentrated double-distilled acids in the Savillex screw-top beakers, according to the following sequence: (i) digestion in HF-, (1:2, vol/vol), (ii) digestion in HCl, (3:1, vol/vol), and (iii) digestion in . . .
  

   

  

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