GERBILS campaign													
Mineralogical concentrations (µg)													
Filter samples collected on Nuclepore membranes (0.4 µm, 47 mm)													
Columns provide with the mass of major minerals 													
<DL indicates that values were below detection limit													
A quantitative detection has not been performed for smectite. Symbols indicates samples for which smectite was detected (D) or not detected (ND)													

Sample ID	Sampling location (GPS coordinates)	Sampling start	Sampling end	Origin	Kaolinite	Illite	Smectite	Quartz	Orthose	Albite	Calcite	Dolomite	Gypse
B295_2 (286-07)	15.2-15.9°N, 1.0°W-0.2°E, 667-1319 m asl	19/06/2007 14:22	19/06/2007 14:42	Local erosion Sahel	2925.0	292.5	D	310.2	6.7	3.2	<DL	1.9	4.5
B300_1 (251-07)	18°N, 6.0-6.9°W, 708-720 m asl	25/06/2007 11:32	25/06/2007 11:45	South Algeria/Mali	484.1	193.6	D	69.4	4.2	1.2	7.6	4.0	<DL
B301_1 (244-07)	17.9-18°N, 3.5-5.1°W, 680-942 m asl	27/06/2007 11:14	27/06/2007 11:43	Mali/Mauritania	595.4	952.7	D	337.3	24.4	6.9	20.4	15.0	0.9
B301_2 (246-07)	18°N, 5.3-6.9°W, 917-946 m asl	27/06/2007 11:45	27/06/2007 12:15	Mali/Mauritania/Western Sahara	777.0	1243.2	D	198.7	7.5	3.0	7.6	4.0	<DL
B302_1 (235-07)	"17.9-18°N; 10°-12.7°W; 669-726 m asl"	28/06/2007 11:53	28/06/2007 12:33	Western Sahara/Mauritania	236.6	378.6	D	69.7	3.5	2.0	15.2	3.0	2.5
B302_3 (237-07)	"18°N; 5-7.4°W; 635-679 m asl"	28/06/2007 13:11	28/06/2007 13:46	South Algeria/Mali	448.9	179.6	D	54.7	4.1	2.1	10.1	6.7	1.9