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Journal of Spectroscopy
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2024
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Article
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Tab 6
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Research Article
Geochemical Characterization of Sedimentary Materials (Limestone, Gypsum, Coal, and Iron Ore) along the Nile River Basin, South Wollo, Ethiopia
Table 6
Petrographic analysis of gypsum, sandstone, and clay samples (wt%).
Code
Gypsum
Opaque Fe
2
O
3
Clay
Volcanic glass
Quartz
Plagioclase
Sanidine
WG-1
95
5
nd
nd
nd
nd
nd
WG-2
90
3
7
nd
nd
nd
nd
WM-1
95
3
2
nd
nd
nd
nd
KS-1
nd
7
10
nd
85
nd
nd
KS-2
nd
5
4
nd
91
nd
nd
KC-1
nd
5
30
nd
65
nd
nd
DC-1
nd
10
75
nd
6
10
nd