Trace Elements in West Virginia Coals

Europium (Eu) Summary Statistics

The histogram of europium abundances in all West Virginia coal beds shows a near-normal, slightly skewed distribution with a mean of 0.33 ppm (± 0.17 ppm) on a whole coal basis. The maximum Eu content was 1.78 ppm in a bench of the Coalburg coal. Europium correlated slightly with ash yield and scandium (Sc), thorium (Th), chromium (Cr), vanadium (V), lead (Pb) and lithium (Li) related to ash forming minerals. Europium is one of the rare earth elements and correlated mainly with the other rare earth elements samarium (Sm), cerium (Ce), ytterbium (Yb), terbium (Tb), lutetium (Lu), lanthanum (La), neodymium (Nd), erbium (Er) and dysprosium (Dy).

**Spearman Correlation Coefficients (r) with Europium**
Ash Yield	Sm	Ce	Yb	Sc	Tb	Lu	La	Th
+0.6177	+0.9009	+0.8838	+0.8705	+0.8595	+0.8426	+0.8343	+0.8307	+0.8053
n = 540	n = 536	n = 540	n = 536	n = 540	n = 492	n = 501	n = 534	n = 527
Cr	V	Pb	Li	Nd	Er	Hf	Ta	Dy
+0.8016	+0.7650	+0.7038	+0.6955	+0.6908	+0.6595	+0.6498	+0.6478	+0.6462
n = 540	n = 539	n = 538	n = 540	n = 410	n = 207	n = 508	n = 462	n = 77

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Page last revised: March 2, 2002

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