Major Element Data for Samples from the Spanish Peaks Region

KEY to sample names

Major and minor element concentrations were determined using energy-dispersive x-ray fluorescence spectrometry (EDXRF) by David Simms and Joe Curry at the U.S.G.S. in Lakewood, Colorado using the methods outlined by Johnson and King (1987). All of these samples have been normalized after the exclusion of L.O.I., i.e., CO2 and H2O+. Iron content was normalized to FMQ.

Sample	Longitude	Latitude	SiO2	TiO2	Al2O3	Fe2O3	FeO	MnO	MgO	CaO	Na2O	K2O	P2O5	Total
bj19	-105.08	37.47	51.20	2.06	16.35	1.79	8.66	0.18	5.23	7.73	5.19	1.22	0.57	100.19
bj2	-104.86	37.65	45.58	1.55	13.31	1.82	8.78	0.18	11.01	11.31	3.09	2.55	0.99	100.18
bj23	-105.06	37.43	69.91	0.41	15.12	0.49	2.35	0.06	0.74	1.66	5.06	4.12	0.15	100.07
bj25	-105.07	37.43	57.11	1.50	16.57	1.26	6.06	0.10	3.56	4.79	4.90	3.62	0.61	100.09
bj29	-105.14	37.6	56.77	0.90	16.51	1.37	6.63	0.18	3.20	6.41	4.98	2.77	0.47	100.18
bj37	-105.08	37.35	55.63	1.33	16.63	1.28	6.21	0.15	4.05	6.95	4.66	2.68	0.58	100.15
bj5	-104.79	37.64	47.84	2.45	11.90	1.77	8.55	0.17	8.45	9.75	3.07	4.64	1.57	100.16
bj64	-104.97	37.42	73.87	0.18	13.30	0.40	1.98	0.08	0.22	0.77	4.20	5.03	0.05	100.09
bj65	-105.00	37.38	57.38	1.43	16.68	1.18	5.74	0.14	2.58	4.63	6.14	3.54	0.70	100.14
bj8	-104.79	37.64	48.24	2.47	11.64	1.81	8.72	0.17	8.41	9.78	2.45	4.85	1.64	100.18
blsp124	-104.86	37.39	66.67	0.71	15.80	0.65	3.18	0.10	1.35	2.66	4.28	4.39	0.31	100.10
blsp128	-104.93	37.40	73.50	0.24	14.40	0.25	1.24	0.08	0.32	1.08	4.17	4.73	0.07	100.07
blsp24	-105.08	37.37	71.82	0.24	15.71	0.29	1.37	0.02	0.64	1.95	4.39	3.50	0.08	100.01
blsp45	-105.00	37.38	58.98	1.57	16.71	1.17	5.67	0.12	2.68	4.47	4.42	3.82	0.51	100.12
K1	-104.89	37.39	73.50	0.34	13.75	0.31	1.52	0.06	0.35	1.24	4.39	4.52	0.08	100.06
K10	-104.87	37.48	47.19	1.73	14.01	2.00	9.61	0.18	9.77	9.77	3.28	1.76	0.89	100.18
K11	-104.79	37.64	48.12	1.87	12.43	1.79	8.56	0.10	8.70	9.68	2.95	4.50	1.39	100.10
K12	-104.80	37.60	46.81	1.69	12.81	1.79	8.57	0.11	10.62	10.74	2.73	3.19	1.06	100.11
K13	-104.88	37.48	46.53	1.97	13.33	1.94	9.34	0.19	10.50	9.93	3.14	2.37	0.97	100.20
K14	-104.83	37.65	45.99	1.58	13.78	1.71	8.27	0.19	10.80	10.75	3.34	2.75	1.03	100.19
K15	-104.91	37.47	46.10	1.90	14.64	1.83	8.82	0.19	8.62	11.25	3.20	2.54	1.11	100.19
K16	-104.91	37.47	45.14	2.52	12.75	2.01	9.68	0.19	10.70	10.95	2.32	2.71	1.23	100.19
K17	-105.04	37.46	61.38	0.85	16.72	1.03	5.00	0.11	1.70	4.91	4.33	3.58	0.50	100.12
K2	-105.04	37.41	70.56	0.39	15.28	0.39	1.88	0.03	0.86	2.17	4.30	4.03	0.14	100.03
K3	-104.98	37.38	59.58	1.37	16.06	1.18	5.67	0.10	2.76	4.76	4.45	3.65	0.52	100.09
K4	-104.85	37.52	56.03	1.52	17.98	1.22	5.83	0.08	2.98	6.08	4.50	3.15	0.71	100.08
K5	-104.86	37.51	54.95	1.29	17.13	1.51	7.27	0.13	2.78	6.13	4.28	3.84	0.81	100.12
K6	-104.85	37.61	54.33	1.20	10.48	1.40	6.75	0.11	9.31	7.10	2.26	6.53	0.65	100.12
K7	-104.89	37.35	50.13	2.34	12.64	1.64	7.93	0.18	8.75	7.66	2.08	5.68	1.14	100.18
K8	-104.87	37.48	47.35	1.72	14.04	2.00	9.63	0.19	9.67	9.65	3.27	1.76	0.92	100.20
K9	-104.83	37.76	47.63	1.79	13.29	1.92	9.24	0.16	9.85	10.42	3.12	1.97	0.77	100.17
rj101	-104.97	37.44	48.70	1.94	12.31	1.76	8.50	0.21	8.64	10.04	1.30	5.08	1.73	100.22
rj106	-104.91	37.33	56.46	1.46	16.12	1.35	6.56	0.19	5.30	5.20	4.26	2.70	0.58	100.18
rj108	-104.90	37.33	57.84	1.34	18.08	1.12	5.43	0.12	2.38	4.44	5.37	3.31	0.69	100.13
rj111a	-105.00	37.33	60.71	1.12	18.26	0.87	4.19	0.08	1.73	3.27	5.31	3.98	0.56	100.08
rj111b	-104.98	37.34	64.19	0.74	16.43	0.76	3.67	0.09	1.71	3.53	4.64	3.93	0.41	100.09
rj112	-104.99	37.34	60.64	1.02	17.25	1.00	4.83	0.11	2.45	4.29	4.59	3.37	0.56	100.11
rj115	-105.05	37.56	59.03	1.24	16.16	1.17	5.65	0.11	4.35	4.97	4.14	2.80	0.50	100.11
rj11b	-105.13	37.45	60.38	1.22	18.26	0.92	4.44	0.09	1.84	3.26	5.20	3.98	0.50	100.09
rj124	-105.01	37.65	48.17	1.44	14.23	2.23	10.75	0.21	6.50	10.11	3.51	2.17	0.90	100.23
rj128	-104.83	37.21	54.58	1.27	18.76	1.29	6.34	0.23	3.60	7.00	4.03	2.44	0.69	100.24
rj130	-104.78	37.46	51.41	2.33	18.23	1.85	8.94	0.20	5.30	5.30	4.35	1.59	0.70	100.21
rj131	-104.86	37.33	59.48	1.25	15.44	1.25	6.03	0.10	5.43	3.97	3.76	2.92	0.47	100.11
rj132	-104.97	37.33	59.15	1.34	16.05	1.14	5.51	0.12	4.42	4.01	4.73	3.19	0.46	100.11
rj133	-104.86	37.69	46.95	2.12	18.78	1.85	8.96	0.22	3.80	11.40	3.69	1.57	0.88	100.22
rj136	-104.79	37.30	49.28	1.28	18.03	2.04	9.86	0.23	4.69	8.43	3.73	1.39	1.28	100.23
rj138b	-104.84	37.28	55.67	1.47	16.01	1.46	7.07	0.16	6.59	5.34	3.66	2.20	0.53	100.16
rj148	-104.76	37.38	53.74	1.67	17.29	1.48	7.15	0.17	4.37	5.62	4.90	2.92	0.86	100.17
rj156	-104.71	37.25	47.37	2.66	17.88	2.32	11.45	0.49	4.36	8.52	3.19	1.49	0.76	100.49
rj157	-104.71	37.25	48.09	2.42	16.84	1.94	9.46	0.31	6.63	9.47	3.58	0.71	0.87	100.31
rj16	-104.99	37.60	73.02	1.21	14.71	0.09	0.42	0.02	0.26	1.31	4.73	4.23	0.02	100.01
rj164	-104.89	37.21	48.56	1.85	15.40	2.02	9.70	0.17	8.11	9.14	2.98	1.54	0.72	100.18
rj166	-104.88	37.34	49.98	1.75	17.10	1.71	8.22	0.15	4.71	11.40	3.18	1.42	0.54	100.15
rj168	-104.90	37.32	48.39	2.77	12.44	1.77	8.59	0.23	9.68	9.46	1.38	4.25	1.28	100.23
rj170	-104.87	37.49	45.50	2.30	12.86	2.02	9.71	0.19	12.66	9.10	2.20	2.51	1.15	100.20
rj207	-104.99	37.34	60.77	1.13	18.24	0.92	4.44	0.09	1.84	2.97	4.92	4.20	0.57	100.08
rj28	-104.79	37.64	49.99	2.09	11.90	1.77	8.49	0.14	7.20	9.39	2.30	5.01	1.88	100.14
rj28b	-104.79	37.64	48.97	2.18	12.06	1.69	8.17	0.17	8.63	9.77	2.39	4.68	1.46	100.17
rj28c	-104.79	37.64	47.19	2.40	11.67	2.10	10.08	0.16	7.29	10.00	2.71	4.17	2.40	100.16
rj52	-104.78	37.50	54.64	1.25	17.41	1.67	8.10	0.19	3.13	5.11	5.01	2.92	0.76	100.20
rj78	-105.04	37.44	69.56	0.50	15.78	0.45	2.13	0.01	1.23	2.15	4.41	3.59	0.22	100.02
rj79	-105.00	37.32	61.45	1.05	17.50	0.85	4.13	0.11	2.21	3.90	4.95	3.48	0.47	100.10
rj80	-104.99	37.33	70.26	0.45	15.35	0.47	2.28	0.08	0.81	1.93	4.78	3.46	0.21	100.07
rj81	-104.79	37.30	70.07	0.69	15.54	1.05	5.04	0.10	1.77	0.90	1.98	2.71	0.25	100.10
rj82	-105.02	37.45	70.69	0.33	16.08	0.38	1.84	0.03	0.72	1.36	5.22	3.24	0.15	100.04
rj84	-104.97	37.42	65.02	0.69	15.46	0.89	4.28	0.09	2.06	2.99	3.81	4.53	0.27	100.09
rj85	-104.99	37.34	64.03	1.02	16.71	0.97	4.69	0.11	3.03	2.72	3.76	2.72	0.37	100.13
rj86	-105.01	37.34	61.95	0.88	17.46	0.87	4.24	0.12	2.05	3.39	4.83	3.90	0.42	100.11
rj87	-104.99	37.44	65.75	0.62	16.24	0.68	3.28	0.08	1.71	2.82	5.14	3.43	0.33	100.07
rj88	-105.05	37.34	65.74	0.66	16.16	0.71	3.45	0.10	1.92	2.42	5.15	3.43	0.36	100.09
rj96	-104.79	37.64	48.56	2.59	11.49	1.88	8.97	0.09	6.52	10.98	2.17	4.66	2.17	100.08
rj96b	-104.79	37.64	48.63	1.86	11.87	1.70	8.18	0.15	8.05	11.25	2.58	3.92	1.96	100.14
rj98	-104.79	37.64	47.52	2.08	11.25	1.93	9.29	0.20	9.27	10.21	2.40	4.27	1.77	100.19
rjESP			72.38	0.34	14.84	0.36	1.78	0.10	0.72	1.12	3.66	4.68	0.12	100.10
rs11			60.57	1.83	17.86	0.94	4.45	0.00	2.23	2.74	5.78	3.04	0.56	99.99
rs22			71.41	0.83	15.20	0.34	1.59	0.00	0.83	0.76	5.40	3.50	0.14	100.00
rs3			53.57	3.37	15.64	1.33	6.26	0.00	6.44	5.42	3.99	3.48	0.51	100.01
rs46			57.65	2.54	16.78	1.14	5.38	0.00	3.25	4.98	4.07	3.66	0.56	100.14
rs52			53.26	3.28	14.13	1.41	6.66	0.00	8.50	7.27	3.07	1.74	0.68	100.00
rs53			63.76	1.63	17.34	0.49	2.31	0.00	1.63	2.55	5.92	4.08	0.28	100.00
rs54			58.87	2.81	16.75	1.07	5.03	0.00	3.33	3.74	4.06	3.85	0.50	100.00
rs60			49.98	3.32	14.73	1.68	7.92	0.00	7.78	8.09	2.18	3.53	0.81	100.01
rs7			63.47	1.61	17.27	0.71	3.34	0.00	1.71	2.91	4.52	4.12	0.34	100.00
sp101	-105.03	37.34	55.90	1.31	16.72	1.26	6.08	0.14	4.22	7.38	3.91	2.61	0.62	100.15
sp118	-105.08	37.37	70.09	0.30	15.69	0.44	2.12	0.06	1.05	2.54	4.74	2.91	0.12	100.06
sp119	-105.00	37.65	45.53	1.45	11.23	2.44	11.75	0.23	13.74	10.62	1.96	1.19	0.08	100.22
sp121	-105.04	37.47	62.87	0.08	16.14	1.21	5.86	0.15	1.65	4.92	3.30	3.46	0.52	100.16
sp123	-105.16	37.61	65.56	0.44	16.79	0.74	3.61	0.14	1.09	4.83	4.02	2.68	0.25	100.13
sp124	-105.20	37.69	73.22	0.06	15.26	0.15	0.77	0.04	0.15	1.35	4.41	4.58	0.05	100.03
sp131	-104.79	37.64	47.03	2.52	11.44	1.83	8.83	0.18	8.82	10.34	2.91	4.45	1.84	100.19
sp134	-104.86	37.39	66.27	0.67	16.06	0.64	3.09	0.09	1.33	2.97	4.45	4.22	0.32	100.10
sp20	-105.09	37.62	60.34	0.70	18.17	0.95	4.60	0.10	1.64	5.87	4.55	2.84	0.34	100.11
sp21a	-104.78	37.50	56.77	1.14	17.25	1.44	6.95	0.13	2.28	4.56	4.90	3.93	0.78	100.13
sp21b	-104.78	37.50	45.28	2.12	12.89	1.95	9.38	0.19	10.17	11.63	2.86	2.46	1.26	100.19
sp23	-105.23	37.69	64.40	0.48	16.18	0.74	3.60	0.13	1.94	4.32	4.91	3.11	0.32	100.13
sp33	-104.99	37.37	59.05	1.40	17.37	1.08	5.23	0.12	2.52	4.59	4.70	3.47	0.59	100.12
sp34b	-104.83	37.76	53.27	1.97	18.21	1.25	6.03	0.13	2.95	5.35	4.44	5.56	0.97	100.14
sp34ts	-104.83	37.76	48.08	2.00	13.93	1.91	9.26	0.22	8.34	9.35	3.65	2.52	0.96	100.23
sp37	-104.93	37.26	44.22	1.71	11.27	1.91	9.20	0.19	13.63	13.63	1.01	2.26	1.16	100.19
sp46	-104.52	37.42	48.93	1.83	14.17	1.84	8.87	0.16	8.99	9.50	3.52	1.60	0.76	100.16
sp51	-104.73	37.73	49.50	1.98	16.18	1.72	8.27	0.17	5.46	8.42	4.77	2.56	1.14	100.17
sp52	-104.81	37.60	46.49	1.69	12.69	1.78	8.58	0.17	11.23	10.71	2.68	3.03	1.12	100.16
sp57	-105.01	37.71	62.32	0.52	17.97	0.82	4.05	0.19	1.36	3.73	6.15	2.80	0.28	100.19
sp65	-104.33	37.79	45.08	2.18	12.70	2.18	10.49	0.19	10.45	10.76	3.46	1.65	1.04	100.19
sp70	-104.62	37.69	48.31	2.91	11.82	1.61	7.73	0.12	5.23	10.78	3.15	4.60	3.86	100.12
sp73	-104.88	37.50	62.96	1.14	16.05	0.83	4.03	0.11	2.41	3.29	4.56	4.30	0.45	100.12
sp95	-105.05	37.34	54.41	1.50	17.55	1.33	6.43	0.15	4.00	6.68	4.61	2.79	0.70	100.15

Samples begining with "blsp" are from:

Budding, K. E., and Lawrence, V. A. 1983. Geochemical Analyses of rock, stream-sediment, and heavy-mineral-concentrate samples collected from the Spanish Peaks Wilderness Study Area, Huerfano and Las Animas Counties, Colorado. U. S. Geological Survey Open-File Report 83-391.

Samples begining with "bj" are from:

Jahn, B. 1973. A Petrogenetic Model for the Igneous Complex in the Spanish Peaks Region, Colorado. Contributions to Mineralogy and Petrology 41:241-258.

Samples begining with "rj" are from:

Johnson, R. B. 1968. Geology of the Igneous Rocks of the Spanish Peaks Region Colorado. U. S. Geological Survey Professional Paper 594-G, 47p.

Samples begining with "K" are from:

Knopf, A. 1936. Igneous Geology of the Spanish Peaks Region, Colorado. Geological Society of America Bulletin 47:1727-1784.

Samples begining with "rs" are from:

Smith, R. P. 1975. Structure and Petrology of Spanish Peaks Dikes, South Central Colorado. Ph.D. Thesis, University of Colorado at Boulder, 191 p.

Smith, R. P.. 1979. Early Rift Magmatism at Spanish Peaks, Colorado in Rio Grande Rift: Tectonics and Magmatism, Reicker, R. E. (ed.), American Geophysical Union, Washington, D. C., 313-321.

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