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Table 1 Mineral composition of the two sandstone variations Pfinztal Sandstone and Tennenbach Sandstone used in the triaxial tests (Schmidt et al. 2017)

From: Triaxial testing and hydraulic–mechanical modeling of sandstone reservoir rock in the Upper Rhine Graben

In vol (%) Pfinztal Sandstone Tennenbach Sandstone
Quartz 49 83
K-feldspar 16 2
Muscovite 11 0
Cementation 15 5
Accessories 1 1
Pore space 8 9