Citation:

PANGAEA.910791

Name: Representative major element compositions of clinopyroxenes and phlogopites from ultrapotassic rocks from Nangqian basin (Eastern Tibet)
Published: 2020-01-14
License: https://creativecommons.org/licenses/by/4.0/
Keywords: carbonate C-O isotopy; in-situ mineral geochemistry; Whole-rock geochemistry

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Published: 2020-01-14 • DOI registered: 2020-02-06

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Abstract:

Representative major element compositions (in wt%) of clinopyroxenes and phlogopites from Nangqian ultrapotassic rocks. In-situ major-element compositions of mineral phases were obtained using the JEOL JXA-8230 Electron Microprobe at ISTerre, University Grenoble Alpes. Analytical conditions were 15 kV accelerating voltage and 12 nA beam current. The ZAF procedure was applied to reduce the raw data. The microprobe was calibrated using natural and synthetic standards. An X-ray element map of a calcite-bearing aggregate was acquired using 15 kV accelerating voltage and 10 nA beam current.

Keyword(s):

carbonate C-O isotopy; in-situ mineral geochemistry; Whole-rock geochemistry

Supplement to:

Goussin, Fanny; Cordier, Carole; Riel, Nicolas; Guillot, Stéphane; Boulvais, Philippe; Roperch, Pierrick; Replumaz, Anne; Schulmann, Karel; Dupont-Nivet, Guillaume; Rosas, Filipe; Zhaojie, Guo (2020): Carbonated inheritance in the Eastern Tibetan lithospheric mantle: petrological evidences and geodynamic implications. Geochemistry, Geophysics, Geosystems, 21(2), e2019GC008495, https://doi.org/10.1029/2019GC008495

Coverage:

Median Latitude: 32.227397 * Median Longitude: 96.443980 * South-bound Latitude: 32.106970 * West-bound Longitude: 96.405720 * North-bound Latitude: 32.287610 * East-bound Longitude: 96.520500

Event(s):

YU-14-07 * Latitude: 32.106970 * Longitude: 96.520500 * Location: Nangqian basin, Eastern Tibet * Comment: Phlogopite-bearing UK syenite

YU-14-35 * Latitude: 32.287610 * Longitude: 96.405720 * Location: Nangqian basin, Eastern Tibet * Method/Device: Rock sample (ROCK) * Comment: Tephrite, Clinopyroxene-Calcite aggregate-bearing lavas

YU-14-36 * Latitude: 32.287610 * Longitude: 96.405720 * Location: Nangqian basin, Eastern Tibet * Method/Device: Rock sample (ROCK) * Comment: Tephrite, Clinopyroxene-Calcite aggregate-bearing lavas

Comment:

#999: below detection limit

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Goussin, Fanny
2	Latitude of event	Latitude		Goussin, Fanny
3	Longitude of event	Longitude		Goussin, Fanny
4	Sample comment	Sample comment		Goussin, Fanny
5	Minerals	Minerals		Goussin, Fanny
6	Silicon dioxide	SiO2	%	Goussin, Fanny	Electron microprobe JEOL JXA-8230
7	Titanium dioxide	TiO2	%	Goussin, Fanny	Electron microprobe JEOL JXA-8230
8	Aluminium oxide	Al2O3	%	Goussin, Fanny	Electron microprobe JEOL JXA-8230
9	Iron oxide, Fe2O3	Fe2O3	%	Goussin, Fanny	Electron microprobe JEOL JXA-8230	total
10	Manganese oxide	MnO	%	Goussin, Fanny	Electron microprobe JEOL JXA-8230
11	Magnesium oxide	MgO	%	Goussin, Fanny	Electron microprobe JEOL JXA-8230
12	Calcium oxide	CaO	%	Goussin, Fanny	Electron microprobe JEOL JXA-8230
13	Sodium oxide	Na2O	%	Goussin, Fanny	Electron microprobe JEOL JXA-8230
14	Potassium oxide	K2O	%	Goussin, Fanny	Electron microprobe JEOL JXA-8230
15	Chromium(III) oxide	Cr2O3	%	Goussin, Fanny	Electron microprobe JEOL JXA-8230
16	Elements, total	Total	%	Goussin, Fanny	Electron microprobe JEOL JXA-8230	Major elements
17	Magnesium number, mineral	Mg# mineral		Goussin, Fanny		Mg/(Mg+Fe)
18	Magnesium number liquid	Mg# liquid		Goussin, Fanny		Mg/(Mg+Fe), in equilibrium with cpx are calculated using KDFe-MgCpx-liq = 0.27

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Size:

423 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Event	2 Latitude	3 Longitude	4 Sample comment	5 Minerals	6 SiO2 [%]	7 TiO2 [%]	8 Al2O3 [%]	9 Fe2O3 [%]	10 MnO [%]	11 MgO [%]	12 CaO [%]	13 Na2O [%]	14 K2O [%]	15 Cr2O3 [%]	16 Total [%]	17 Mg# mineral	18 Mg# liquid
YU-14-07	32.1070	96.5205	UK syenite	Phl. rim	36.4	5.740	13.90	8.93	0.085	18.2	#999.000	0.421	8.900	0.101	92.7	0.780
YU-14-07	32.1070	96.5205		Phl. core	39.3	2.380	13.80	3.91	0.028	23.3	0.001	0.349	9.980	1.090	94.2	0.910
YU-14-07	32.1070	96.5205		Phl. (unzoned)	36.6	5.950	14.10	8.48	0.058	18.7	0.021	0.411	8.970	#999.000	93.3	0.800
YU-14-07	32.1070	96.5205		Phl. (unzoned)	36.2	6.110	14.00	11.00	0.099	17.1	0.009	0.486	8.890	#999.000	93.9	0.730
YU-14-07	32.1070	96.5205		Phl. (unzoned)	36.4	6.040	14.00	9.69	0.069	17.9	0.025	0.405	9.000	#999.000	93.6	0.770
YU-14-07	32.1070	96.5205		Phl. core	39.4	2.370	14.10	4.77	0.031	22.7	0.004	0.454	9.850	1.150	94.8	0.890
YU-14-07	32.1070	96.5205		Phl. rim	36.7	5.870	14.20	9.51	0.092	17.9	0.006	0.458	8.990	#999.000	93.8	0.770
YU-14-07	32.1070	96.5205		Phl. core	39.7	2.370	13.70	4.67	0.005	23.0	#999.000	0.327	9.980	0.952	94.7	0.900
YU-14-07	32.1070	96.5205		Phl. rim	36.3	5.580	13.90	10.80	0.145	17.0	0.006	0.442	8.820	0.028	93.2	0.740
YU-14-35	32.2876	96.4057	Aggregate-bearing lavas, analysis from aggregate minerals only are presented here	Cpx core	53.2	0.333	1.81	3.88	0.071	17.2	23.500	0.256	0.012	0.013	100.0	0.890	0.68
YU-14-35	32.2876	96.4057		Cpx rim	49.7	0.868	4.58	6.86	0.124	14.6	22.900	0.364	0.002	0.034	100.0	0.790	0.51
YU-14-35	32.2876	96.4057		Cpx rim	49.7	0.816	4.34	6.47	0.122	14.6	23.100	0.333	#999.000	0.034	99.5	0.800	0.52
YU-14-35	32.2876	96.4057		Cpx core	53.1	0.351	1.95	3.60	0.084	16.9	23.200	0.280	0.006	0.361	99.8	0.890	0.69
YU-14-35	32.2876	96.4057		Cpx core	53.1	0.317	1.66	3.69	0.085	17.0	23.200	0.270	#999.000	0.193	99.5	0.890	0.69
YU-14-35	32.2876	96.4057		Cpx rim	49.4	0.945	4.79	6.72	0.100	14.2	22.900	0.363	0.005	0.028	99.5	0.790	0.51
YU-14-35	32.2876	96.4057		Cpx core	53.5	0.305	1.59	3.66	0.081	17.3	23.000	0.210	#999.000	0.247	99.9	0.890	0.69
YU-14-35	32.2876	96.4057		Cpx rim	49.5	0.894	4.64	6.54	0.125	14.4	23.200	0.342	#999.000	0.047	99.7	0.800	0.51
YU-14-35	32.2876	96.4057		Cpx rim	50.5	0.692	3.14	6.44	0.150	15.1	22.800	0.286	0.002	0.027	99.2	0.810	0.53
YU-14-36	32.2876	96.4057	Aggregate-bearing lavas, analysis from aggregate minerals only are presented here	Cpx core	52.7	0.368	1.80	5.15	0.126	16.1	23.300	0.227	#999.000	0.003	99.8	0.850	0.60
YU-14-36	32.2876	96.4057		Cpx rim	51.4	0.603	2.99	5.84	0.158	15.3	23.100	0.300	0.008	0.016	99.7	0.820	0.56
YU-14-36	32.2876	96.4057		Cpx rim	52.1	0.417	2.43	4.82	0.106	16.2	22.900	0.306	0.011	0.079	99.4	0.860	0.62
YU-14-36	32.2876	96.4057		Cpx rim	49.3	0.930	4.64	7.05	0.130	14.2	22.700	0.367	0.007	0.038	99.4	0.780	0.49
YU-14-36	32.2876	96.4057		Phl.	36.9	4.390	15.20	8.45	0.056	19.1	0.024	0.573	9.140	0.006	93.8	0.800
YU-14-36	32.2876	96.4057		Cpx core	53.1	0.341	1.74	3.97	0.087	16.7	23.500	0.242	0.014	0.067	99.8	0.880	0.67
YU-14-36	32.2876	96.4057		Cpx rim	51.5	0.575	2.86	5.70	0.144	15.6	23.000	0.293	#999.000	0.056	99.7	0.830	0.57
YU-14-36	32.2876	96.4057		Cpx core	53.2	0.346	1.91	3.68	0.085	16.8	23.100	0.258	0.005	0.379	99.8	0.890	0.69
YU-14-36	32.2876	96.4057		Cpx rim	48.8	1.020	5.26	7.33	0.142	13.9	22.800	0.416	#999.000	0.010	99.7	0.770	0.48
YU-14-36	32.2876	96.4057		Phl.	37.6	3.720	15.20	8.98	0.059	19.9	0.047	0.880	9.050	0.066	95.4	0.800
YU-14-36	32.2876	96.4057		Phl.	38.4	2.530	14.80	6.59	0.038	21.4	0.006	0.747	9.250	0.326	94.2	0.850
YU-14-36	32.2876	96.4057		Phl.	38.0	3.750	15.20	8.26	0.046	19.9	0.017	0.787	9.120	0.079	95.1	0.810
YU-14-36	32.2876	96.4057		Phl.	36.9	4.070	15.10	8.44	0.037	19.3	0.021	0.640	9.160	0.031	93.6	0.800