"A. Demant, P. Munch, N. Romeuf, D. Morata"																																		
"Chapter 34. Distribution and chemistry of secondary minerals (zeolites and clay minerals) from Hole 917A, southeast Greenland Margin"																																		
152SR-231																																		

																						
	Unit 6 - Core 8R04 - Aphyric olivine basalt																					
																						
																						
																						
																						
	Chabazite (groundmass)															Chabazite (vesicles)						
																						
																						
		280	281	282	283	284	289	290	291	292	293	294					273	274	275			
																						
	SiO2	49.44	49.74	50.95	50.50	49.14	47.38	48.93	49.21	48.78	49.70	49.94				SiO2	56.24	56.46	56.62			
	Al2O3	22.42	22.62	22.78	22.70	23.58	23.41	22.95	22.96	23.37	22.88	23.41				Al2O3	19.43	19.48	19.34			
	FeO	 	 	0.08	 	0.06	0.01	0.04	0.02	0.03	 	0.16				FeO	0.01	0.01	0.01			
	MgO	0.02	0.02	0.05	0.05	0.06	0.02	0.05	0.01	0.06	0.05	0.04				MgO	0.32	0.32	0.39			
	CaO	1.58	1.63	1.70	1.56	2.38	2.35	2.73	2.27	2.48	1.80	2.63				CaO	0.97	0.94	0.92			
	Na2O	10.01	9.74	10.26	10.16	10.13	11.12	9.67	10.55	10.33	10.60	9.42				Na2O	7.94	8.14	7.98		
	K2O	2.27	2.44	2.01	2.68	1.84	1.18	1.11	1.69	1.64	1.53	1.60				K2O	2.48	2.58	2.54		
																					
	Total	85.74	86.19	87.83	87.65	87.19	85.47	85.48	86.72	86.68	86.56	87.21				Total	87.39	87.93	87.82		
																					
	Structural Formulae calculated with 24 oxygens															S. Formulae calculated with 24 oxygens					
																					
	Si	7.838	7.840	7.869	7.848	7.674	7.568	7.749	7.730	7.667	7.791	7.757				Si	8.563	8.555	8.580		
	Al	4.189	4.203	4.146	4.158	4.340	4.407	4.282	4.251	4.329	4.227	4.286				Al	3.486	3.478	3.454		
	Fe3+	 	 	0.011	 	0.008	0.002	0.006	0.003	0.004	 	0.021				Fe3+	0.002	0.002	0.002		
	Mg	0.004	0.005	0.011	0.011	0.013	0.005	0.011	0.001	0.013	0.011	0.010				Mg	0.073	0.073	0.089		
	Ca	0.268	0.276	0.282	0.259	0.398	0.402	0.464	0.382	0.417	0.303	0.437				Ca	0.158	0.152	0.150		
	Na	3.077	2.976	3.073	3.062	3.068	3.445	2.970	3.214	3.146	3.223	2.838				Na	2.344	2.392	2.345		
	K	0.458	0.491	0.395	0.532	0.367	0.241	0.223	0.338	0.328	0.306	0.317				K	0.481	0.498	0.491		
																					
	Sum	15.835	15.791	15.787	15.870	15.869	16.070	15.704	15.919	15.904	15.860	15.667				Sum	15.106	15.150	15.110		
																					
	Si/Al	1.87	1.87	1.90	1.89	1.77	1.72	1.81	1.82	1.77	1.84	1.81				Si/Al	2.46	2.46	2.48		
	E%	2.71	4.32	2.56	0.56	2.14	-2.03	6.26	1.16	2.60	4.58	8.71				E%	6.12	4.17	4.32		
																					
																					
	"E% = Charge balance (Passaglia, 1970)"