Bulletin of the National Research Centre

Table 2 Trace elements (ppm)

From: Spheroidal weathering of basalt from Gebel Qatrani, Fayum Depression, Egypt

	1	2	3	4	5	6	7	Av
Core-stone
V	300	280	290	300	310	290	300	295.7
Cr	85	88	90	88	85	90	85	87.3
Co	55	52	53	55	54	55	54	54.0
Ni	44	43	45	46	44	45	45	44.6
Zn	75	80	77	75	80	78	80	77.9
Rb	20	21	21	20	20	21	22	20.7
Sr	360	365	370	350	365	360	385	365.0
Y	35	35	36	35	36	36	35	35.4
Zr	220	219	220	219	220	220	230	221.1
Ba	225	230	230	225	220	230	222	226.0
La	22	23	22	23	21	22	22	22.1
Ce	50	51	50	51	52	50	51	50.7
Pb	3	3	3	2	3	3	3	2.9
Th	3	3	3	2	3	2	2	2.6
Shell around core-stone
V	265	248	257	265	275	257	265	261.7
Cr	79	82	74	82	79	78	85	79.9
Co	55	52	53	55	54	55	54	54.0
Ni	36	35	39	38	36	37	46	38.1
Zn	58	73	70	68	73	71	81	72.0
Rb	10	11	10	10	10	11	11	104
Sr	334	296	301	294	286	295	295	300.1
Y	35	35	36	35	36	36	35	35.4
Zr	222	221	222	221	222	222	232	222.9
Ba	251	253	254	251	249	245	250	250.4
La	22	23	22	23	21	22	22	22.1
Ce	51	52	51	52	53	51	52	51.2
Pb	3	3	3	2	3	3	3	2.9
Th	3	3	3	2	3	2	2	2.6

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