WVGES Trace Elements in West Virginia Coals

Click Here To Go To Trace Elements Framed Home Page Hafnium (Hf) Summary Statistics

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Hafnium averaged 0.72 ppm (± 0.60 ppm) in West Virginia coals with a histogram skewed toward low values and a  a tail toward higher values, and a maximum value of 7.2 ppm in a bench of the Coalburg coal.  Hafnium correlated with ash yield, and the ash related elements thorium (Th), tantalum (Ta), chromium (Cr), scandium (Sc), lithium (Li), zirconium (Zr) and tin (Sn), and rare earth elements present in monazite, mainly cerium (Ce), lanthanum (La) and samarium (Sm).
Spearman Correlation Coefficients (r) with Hafnium
Ash Yield
n = 509
n = 508
n = 462
n = 509
n = 509
n = 504
n = 509
n = 498
n = 509
n = 509
n = 505
n = 252
Go to Stratigraphic Distribution of HafniumGo to Hafnium State MapGo to General Elements PageGo to All Elements Summary Statistics Table
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