Table 2: Chemical Composition Group Means and Coefficients of Variation [CoV]

	Na	K	Ca	Sc	Cr	Fe	Co	Zn	Rb	Cs	Ba	La	Ce	Nd	Sm	Eu	Tb	Yb	Lu	Hf	Ta	Th
	%	%	%	ppm	ppm	%	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm	ppm
OVERALL [N = 15]
Mean	1.046	2.915	4.78	18.3	176.0	4.92	21.7	116.4	50.0	7.66	656.	45.7	81.0	32.6	6.42	1.35	0.886	2.47	0.358	5.12	0.974	14.37
CoV	17.6	11.1	30.8	18.1	45.5	16.0	27.6	17.1	13.8	12.4	37.1	19.3	18.4	25.4	14.6	8.7	20.1	15.7	11.8	14.5	12.5	18.4
GROUP R1 (N = 4 [Samples YHP770-772, 776])
Mean	1.020	2.790	6.17	22.5	298.5	5.92	30.4	119.4	131.5	7.25	442.	33.2	59.8	23.2	5.30	1.27	0.817	.35	0.351	4.06	1.053	10.79
CoV	0.8	8.9	4.5	3.8	3.1	4.0	5.1	6.8	10.6	2.0	15.3	2.8	3.5	25.1	1.7	4.8	4.8	6.0	3.3	6.0	4.9	3.4
Group R2 (N = 10 [Samples YHP767-769, 773-774, 777-781])
Mean	1.039	3.000	3.41	14.4	124.0	4.56	18.4	116.6	159.1	7.81	798.	51.0	90.0	37.3	6.94	1.39	0.911	2.49	0.363	5.51	0.919	15.98
CoV	21.3	11.2	23.1	19.1	11.1	12.6	15.8	20.6	11.3	13.1	16.8	8.4	7.8	12.6	9.6	8.5	22.7	18.4	4.2	7.3	11.0	8.8