WVGES Trace Elements in West Virginia Coals

Click Here To Go To Trace Elements Framed Home PageTerbium (Tb) Summary Statistics

Click on histogram for larger view
Terbium averaged 0.26 ppm (± 0.15 ppm) in West Virginia coals with a near normal histogram showing a slight tail toward higher values and a maximum value of 1.26 ppm in a bench of the Coalburg coal.  Terbium did not correlate with ash yield.  Terbium is one of the rare earth elements and correlated well with other rare earth elements such as europium (Eu), samarium (Sm), ytterbium (Yb), lutetium (Lu), scandium (Sc), cerium (Ce), thorium (Th), lanthanum (La) and lead (Pb).
 
Spearman Correlation Coefficients (r) with Terbium
Ash Yield
Eu
Sm
Yb
Lu
Sc
Ce
Th
La
Pb
+0.4691
+0.8426
+0.8205
+0.8181
+0.7792
+0.7425
+0.7074
+0.6786
+0.6784
+0.6441
n = 493
n = 492
n = 489
n = 490
n = 486
n = 493
n = 493
n = 493
n = 488
n = 490
Go to Stratigraphic Distribution of TerbiumGo to Terbium State MapGo to General Elements PageGo to All Elements Summary Statistics Table
 
To request specific information from a Survey geologist click here.

WVGES Welcome Page

Page last revised: March 2, 2002


Please send questions, comments, and/or suggestions to webmaster.
Page created and maintained by:
            West Virginia Geological & Economic Survey
  Address:  Mont Chateau Research Center
            Cheat Lake exit off I-68
            P.O. Box 879
            Morgantown, WV  26507-0879
Telephone:  1-800-WV-GEOLOgy (1-800-984-3656) or 304-594-2331
      FAX:  304-594-2575
    Hours:  8:00 a.m. - 5:00 p.m. EST, Monday - Friday
Permission to reproduce this material is granted if acknowledgment is given to the West Virginia Geological and Economic Survey.