A tectonic model for the juxtaposition of granulite- and amphibolite-facies rocks in the Eburnean orogenic belt (Sassandra-Cavally domain, Côte d’Ivoire)

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Table 3b

Representative microprobe analyses of selected minerals.

Samples	MAD1A							KOU7

Mineral	g		st		bi	pl	cd	g		st		bi	pl



Position	Rim	Core	g selvedge	in pl				Rim	Core	Matrix	in pl

SiO₂	37.4	37.57	26.88	27.84	36.2	60.14	48.72	37.57	36.95	27.20	27.46	35.73	60.65
TiO₂	0.00	0.02	0.55	0.74	1.77	0.00	0.00	0.00	0.04	0.64	0.59	1.21	0.00
Al₂O₃	21.55	21.78	53.28	52.75	18.67	25.23	32.64	21.53	21.34	53.64	52.67	27.37	24.92
Fe_tot as FeO	33.60	33.13	13.21	13.04	17.61	0.02	7.10	35.66	33.68	14.29	14.47	16.20	0.02
MnO	3.32	3.22	0.20	0.17	0.08	0.05	0.19	1.44	3.36	0.10	0.10	0.00	0.00
MgO	3.37	3.92	1.78	2.24	10.75	0.00	8.52	3.24	3.35	1.77	1.66	7.80	0.00
CaO	1.52	1.62	0.00	0.03	0.00	7.15	0.05	1.48	1.4	0.02	0.00	0.00	6.55
Na₂O	0.02	0.01	0.00	0.04	0.25	7.45	0.50	0.01	0.04	0.00	0.04	0.18	8.12
K₂O	0.00	0.01	0.00	0.00	8.97	0.05	0.01	0.00	0.04	0.00	0.00	6.86	0.05
Cr₂O₃	0.00	0.03	0.37	0.18	0.11	0.00	0.00	0.04	0.01	0.05	0.27	0.00	0.01
BaO	0.00	0.00	0.00	0.00	0.22	0.00	0.00	0.00	0.00	0.00	0.00	0.20	0.00
Total	100.77	101.33	96.26	97.02	94.95	100.08	97.73	100.97	100.21	97.71	97.25	95.81	100.33
ox	12	12	46	46	11	8	18	12	12	46	46	11	8
Si	2.98	2.97	7.58	7.77	2.75	2.675	5.03	2.99	2.97	7.59	7.70	2.60	2.69
Ti	0.00	0.00	0.12	0.15	0.10	0.00	0.00	0.00	0.00	0.13	0.12	0.07	0.00
Al	2.03	2.03	17.71	17.36	1.67	1.323	3.97	2.02	2.02	17.63	17.42	2.34	1.30
Cr	0.00	0.00	0.08	0.04	0.01	0.00	0.00	0.00	0.00	0.01	0.06	0.00	0.00
Fe³⁺	0.02	0.04	0.00	0.00	0.00	0.00	0.00	0.00	0.06	0.00	0.00	0.00	0.00
Mg	0.4	0.46	0.75	0.93	1.22	0.00	1.31	0.39	0.40	0.74	0.69	0.85	0.00
Fe²⁺	2.22	2.15	2.61	2.38	1.12	0.001	0.61	2.37	2.20	2.69	2.70	0.98	0.001
Mn	0.22	0.22	0.05	0.04	0.01	0.002	0.02	0.10	0.23	0.02	0.02	0.00	0.00
Ca	0.13	0.14	0.00	0.01	0.00	0.341	0.01	0.13	0.12	0.01	0.00	0.00	0.31
Ba	0.00	0.00	0.00	0.00	0.01	0.00	0.00	0.00	0.00	0.00	0.00	0.01	0.00
Na	0.00	0.00	0.00	0.02	0.04	0.642	0.10	0.00	0.01	0.00	0.02	0.03	0.70
K	0.00	0.00	0.00	0.00	0.87	0.003	0.00	0.00	0.00	0.00	0.00	0.64	0.00
OH					1.92							1.94
F					0.08							0.06
Cl					0.00							0.00
Total	8.00	8.00	28.90	28.71	9.77	4.99	11.04	8.00	8.00	28.82	28.75	9.50	5.01

XAlm	0.75	0.73						0.8	0.75
XPrp	0.13	0.16						0.13	0.14
XGrs	0.04	0.05						0.04	0.04
XSps	0.08	0.07						0.03	0.08
X_Mg	0.15	0.18	0.19	0.23	0.52		0.68	0.14	0.15	0.18	0.17	0.46
X_an						0.35							0.31
X_ab						0.65							0.69
X_or						0.00							0.00

b.d.l: below detection limit

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