The Au-Hosting Minerals and Process of Formation of the Carlin-Type Bojitian Deposit, Southwestern China

Table 3

Results of EPMA analyses of arsenian pyrite (wt%).

Samples and location of measured points	Points	Au	As	S	Fe	Ag	Se	Pb	Cu	Zn	Sb	Co	Te	Ni	Bi	Total	Co/Ni
Zoned pyrite
G2-10-03-core	z-1	bdl	0.02	52.87	46.75	bdl	bdl	bdl	bdl	bdl	bdl	0.05	bdl	bdl	0.35	100.04	>1
G2-10-03-rim	z-2	bdl	5.33	50.56	43.71	bdl	0.02	bdl	0.10	bdl	bdl	0.03	bdl	0.14	0.35	100.24	0.22
G2-10-03-core	z-3	bdl	0.04	54.64	45.74	bdl	bdl	0.08	0.12	bdl	bdl	0.09	bdl	0.09	0.35	101.14	1.00
G2-10-03-rim	z-4	bdl	5.26	50.73	44.05	bdl	0.03	0.09	0.18	bdl	bdl	0.12	bdl	0.03	0.35	100.84	4.62
G2-10-05-core	z-5	0.05	0.28	53.81	45.32	bdl	bdl	bdl	bdl	bdl	bdl	0.14	0.02	0.05	0.35	100.02	2.64
G2-10-05-rim	z-6	0.09	6.81	49.83	44.03	0.02	0.03	0.07	0.24	bdl	bdl	0.03	bdl	0.02	0.35	101.51	2.00
G2-10-09-core	z-7	0.03	bdl	54.06	45.34	bdl	bdl	0.07	bdl	bdl	0.03	0.04	bdl	bdl	0.35	99.92	>1
G2-10-09-rim	z-8	0.10	5.04	51.59	43.48	0.02	0.06	bdl	0.21	bdl	bdl	0.03	bdl	bdl	0.35	100.88	>1
G2-10-10a-core	z-9	bdl	bdl	54.15	45.55	bdl	bdl	bdl	bdl	bdl	bdl	bdl	bdl	bdl	0.35	100.05	—
G2-10-10a-rim	z-10	bdl	7.75	47.12	43.31	0.01	0.09	bdl	0.13	bdl	bdl	0.04	bdl	bdl	0.35	98.80	>1
G2-10-10b-core	z-11	bdl	0.09	53.89	44.88	0.02	bdl	0.08	0.06	bdl	0.02	0.12	bdl	bdl	0.35	99.50	>1
G2-10-10b-rim	z-12	0.10	5.55	51.24	42.99	0.01	0.04	bdl	0.31	bdl	0.05	0.03	bdl	bdl	0.35	100.67	>1
G2-32-08a-core	z-13	bdl	0.02	52.54	46.05	bdl	bdl	bdl	0.08	bdl	bdl	0.13	bdl	bdl	0.32	99.13	>1
G2-32-08a-rim	z-14	bdl	7.90	48.23	43.13	bdl	0.10	0.07	0.35	0.04	bdl	0.05	bdl	bdl	0.30	100.16	>1
G2-32-09-core	z-15	0.03	0.03	53.30	45.49	bdl	bdl	bdl	bdl	bdl	bdl	0.06	bdl	0.06	0.37	99.33	1.07
G2-32-09-rim	z-16	0.07	9.15	48.03	42.19	bdl	0.04	bdl	0.31	bdl	0.02	0.05	bdl	bdl	0.28	100.14	>1
Fine-grained pyrite
G2-10-03	f-1	bdl	7.83	48.77	43.72	0.01	0.05	0.09	0.09	bdl	bdl	0.11	bdl	bdl	0.35	101.02	>1
G2-10-03	f-2	bdl	6.81	49.34	43.76	bdl	bdl	0.09	0.16	0.04	bdl	0.07	bdl	0.05	0.35	100.68	1.30
G2-10-09	f-3	bdl	5.72	50.78	43.21	bdl	bdl	0.07	0.27	bdl	0.02	bdl	bdl	0.02	0.35	100.43	<1
G2-32-09	f-4	0.14	7.86	46.91	42.22	bdl	0.05	bdl	0.16	bdl	bdl	0.03	bdl	bdl	0.26	97.63	>1
G2-35-02	f-5	0.07	8.17	48.56	43.07	bdl	0.03	bdl	0.31	bdl	0.02	0.03	bdl	0.07	0.27	100.59	0.44
Framboidal pyrite
G2-10-05	fb-1	bdl	0.36	53.15	43.61	bdl	0.02	0.11	bdl	bdl	0.03	1.14	bdl	0.19	0.35	98.95	6.16
G2-32-08a	fb-2	0.07	1.52	51.27	44.61	bdl	0.02	bdl	bdl	bdl	0.03	0.15	bdl	bdl	0.32	97.99	>1
G2-35-02	fb-3	bdl	1.73	49.78	42.80	bdl	bdl	bdl	0.11	bdl	0.04	0.15	bdl	0.05	0.34	94.99	2.88
G2-10-02a	fb-4	0.03	0.10	53.82	45.65	0.03	bdl	0.09	0.05	bdl	0.03	0.13	bdl	bdl	0.35	100.27	>1
G2-32-08b	fb-5	0.07	0.67	51.41	45.27	bdl	bdl	0.06	bdl	bdl	bdl	0.08	bdl	0.05	0.31	97.92	1.48
Coarse-grained pyrite
G2-32-06	c-1	0.05	6.74	49.09	44.21	bdl	0.06	bdl	0.07	bdl	bdl	0.19	bdl	bdl	0.33	100.73	>1
G2-32-06	c-2	0.08	0.16	52.88	45.89	bdl	bdl	0.29	0.08	bdl	0.10	0.14	bdl	bdl	0.48	100.09	>1
G2-32-04	c-3	0.05	7.96	47.96	42.56	bdl	0.09	0.06	0.21	bdl	bdl	0.12	bdl	bdl	0.32	99.32	>1
G2-32-03	c-4	bdl	4.19	49.57	45.25	bdl	0.06	bdl	0.07	bdl	bdl	0.08	bdl	bdl	0.30	99.53	>1
Banded pyrite
G2-10-03	b-1	bdl	0.69	52.17	46.24	bdl	bdl	0.05	bdl	bdl	0.04	0.05	bdl	0.21	0.35	99.78	0.24
G2-32-11	b-2	0.03	0.07	52.58	44.80	bdl	0.03	0.06	bdl	bdl	0.04	0.10	bdl	bdl	0.32	98.03	>1
Charcoal detritus pyrite
G2-10-02b	cd-1	bdl	5.87	50.72	43.53	bdl	0.03	0.12	0.24	bdl	bdl	0.03	bdl	bdl	0.35	100.88	>1

Note. “bdl”: below the detection limit.