WVGES Trace Elements in West Virginia Coals

Click Here To Go To Trace Elements Framed Home PageNeodymium (Nd) Summary Statistics

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Neodymium averaged 8.65 ppm (± 5.57 ppm) in West Virginia coals with a histogram showing a near normal distribution with a tail toward higher values and a maximum value of 41.40 ppm in a bench of the No. 2 Gas coal.  Neodymium correlated poorly with ash yield and ash related elements such as vanadium (V), zirconium (Zr), chromium (Cr), thorium (Th), lithium (Li), scandium (Sc), lead (Pb) and gallium (Ga). Neodymium also correlated with several rare earth elements present in monazite, especially gadolinium (Gd), dysprosium (Dy), erbium (Er), cerium (Ce), europium (Eu), samarium (Sm) and lanthanum (La) plus yttrium (Y).
 
Spearman Correlation Coefficients (r) with neodymium
Ash Yield
V
Gd
Dy
Er
Y
Zr
Ce
Cr
+0.5845
+0.8278
+0.7632
+0.7626
+0.7516
+0.7319
+0.7265
+0.7192
+0.7008
n = 418
n = 417
n = 273
n = 55
n = 156
n = 418
n = 418
n = 416
n = 417
Eu
Sm
La
Th
Nb
Li
Sc
Pb
Ga
+0.6908
+0.6855
+0.6794
+0.6785
+0.6760
+0.6754
+0.6618
+0.6568
+0.6366
n = 410
n = 410
n = 415
n = 414
n = 417
n = 418
n = 418
n = 416
n = 418
Go to Stratigraphic Distribution of NeodymiumGo to Neodymium State MapGo to General Elements PageGo to All Elements Summary Statistics Table
 
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Page last revised: March 2, 2002


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