Mineralogical and Geochemical Characterization of Gold Bearing Quartz Veins and Soils in Parts of Maru Schist Belt Area, Northwestern Nigeria

Table 2

Results of whole-rock X-ray florescence analyses of quartz vein samples.

Sample number →	135	137	139	141	143	145	149	153	154	155	157	Range	Mean
Major oxide (wt.%) ↓
SiO2	92.22	89.81	99.24	99.22	99.68	99.23	94.56	83.54	99.43	97.49	74.25	74.25 to 99.68	93.52
TiO2	0.014	0.052	0.003	0.005	<0.001	0.003	0.139	0.264	0.004	0.03	0.098	<0.001 to 0.264	—
Al2O3	2.23	1.49	0.27	0.34	<0.05	0.29	0.9	8.96	0.1	0.94	13.68	<0.05 to 13.68	—
Fe2O3	2.59	6.26	0.11	0.13	0.07	0.14	3.12	3.56	0.21	0.66	1.09	0.07 to 6.26	1.63
MnO	0.104	0.557	0.002	<0.001	0.002	0.002	0.084	0.03	0.002	0.04	0.008	<0.001 to 0.557	—
MgO	1.23	0.02	0.02	0.02	<0.01	0.02	0.36	1.74	0.02	0.03	0.08	<0.01 to 1.74	—
CaO	0.229	0.022	0.027	0.027	0.026	0.029	0.126	0.286	0.062	0.043	0.358	0.022 to 0.358	0.11
Na2O	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01	<0.01	0.56	<0.01	<0.01	3.41	<0.01 to 3.41	—
K2O	0.026	0.064	0.075	0.103	0.008	0.089	0.022	0.024	0.01	0.032	5.812	0.008 to 5.812	0.57
P2O5	0.171	0.191	0.006	0.005	0.006	0.008	0.098	0.011	0.01	0.008	0.029	0.008 to 0.191	0.05
Cl	0.008	0.006	0.013	0.013	0.012	0.015	0.008	0.045	0.016	0.015	0.012	0.008 to 0.016	0.01
LOI	1.08	1.35	0.19	0.16	0.12	0.15	0.49	0.95	0.09	0.69	0.99	0.09 to 1.35	0.57
Total	99.89	99.8	99.95	99.98	99.98	99.98	99.92	100.01	99.97	99.95	99.83	99.89 to 100.01	99.93
Trace element (ppm) ↓
As	<2	39	<2	<2	<2	<2	<2	<2	<2	<2	17	<2 to 39	—
Ba	129	251	28	13	24	32	7	5	<4	76	486	<4 to 486	—
Ce	75	59	22	<17	<17	<17	<18	<17	<17	<17	68	<17 to 68	—
Co	12	28	<3	<2	<2	<3	3	6	<3	6	<3	<3 to 28	—
Cr	<4	135	<4	<4	<4	<4	34	<4	<4	<4	<4	<4 to 135	—
Cu	12	14	5	6	6	6	41	6	6	13	25	5 to 41	12.73
Ga	4	2	<2	<2	<2	<2	2	18	<2	2	24	<2 to 24	—
Nd	62	14	<12	<12	<12	<12	<13	14	<12	<12	<13	<13 to 62	—
Ni	17	46	<2	<2	<2	<2	7	12	<2	3	<2	<2 to 46	—
Pb	3	861	6	<3	3	3	<3	6	5	5	74	<3 to 861	—
Rb	7	9	9	8	5	10	7	<2	5	9	323	<2 to 323	—
Sm	14	18	<13	<13	<13	<13	<14	22	<13	<13	<14	<14 to 18	—
Sr	36	12	<2	<2	<2	<2	8	48	<2	<2	113	<2 to 113	—
Th	9	7	7	4	6	5	12	<3	5	6	48	<3 to 48	—
V	8	30	<5	<5	<5	<5	17	76	<5	16	<6	<6 to 76	—
Y	9	4	<3	<3	<3	<3	5	12	<3	3	16	<3 to 16	—
Zn	77	26	4	4	4	2	22	76	5	7	17	2 to 77	22.18
Zr	7	16	7	4	4	5	31	28	6	11	111	4 to 111	20.91
K/Rb	3.71	7.11	0.01	12.88	0	8.9	0	12	2	3.56	17.99	0 to 17.99	6.2
K/Ba	0.2	0.25	0	7.92	0	2.78	0	4.8	2.5	0.42	11.96	0 to 11.96	2.8
Ba/Rb	18.43	27.89	3.11	1.63	4.8	3.2	1	2.5	0.8	8.44	1.5	0.80 to 27.89	6.66
Rb/Sr	0.19	0.75	4.5	4	2.5	5	0.88	0.04	2.5	4.5	2.86	0.19 to 4.50	2.52