WVGES Trace Elements in West Virginia Coals

Click Here To Go To Trace Elements Framed Home Page Holmium (Ho) Summary Statistics

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Holmium was detected in 47 of 546 samples analyzed.  Holmium in West Virginia coals averaged 0.52 ppm (± 0.27 ppm) with a histogram showing an irregular distribution with a tail of higher values. A maximum Ho value of 1.419 ppm was noted in a bench of the Winifrede coal.  With the small number of samples Ho correlated slightly with ash yield and other rare earth elements especially erbium (Er), dysprosium (Dy) and gadolinium (Gd) present in monazite.
 
Spearman Correlation Coefficients (r) with Holmium
Ash Yield
Er
Dy
Gd
Hf
Sc
Cs
Ga
Eu
Sm
+0.6451
+0.8889
+0.8570
+0.7458
+0.7344
+0.7232
+0.7103
+0.7092
+0.6884
+0.6931
n = 47
n = 45
n = 32
n = 30
n = 33
n = 47
n = 32
n = 47
n = 47
n = 47
Go to Stratigraphic Distribution of HolmiumGo to Holmium State MapGo to General Elements PageGo to All Elements Summary Statistics Table
 
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