"Table 1. Bulk phase distributions and crystalline phase abundances for the Oudam sandstone and Marimba, Quela, and Sebina mudstones determined by FULLPAT and Rietveld analyses, respectively.",,,,,,,,Table 2. Calculated Composition of the Amorphous Component Presented as the Abundance Estimated in the Bulk Sample and as the Percentage of the Amorphous Fractiona,,,,,,,,
,,,,,,,,,Bulk Sample,,,,Amorphous Fraction,,,
,Bulk Phase Distributions,,,,,,,,Oudamb,Marimba,Quela,Sebina,Oudam,Marimba,Quela,Sebina
,Oudam,Marimba,Quela,Sebina,,,,SiO2,31.7,23.5,23.2,25.3,64.3,44.5,44.9,49.5
Crystalline,54,32,32,30,,,,TiO2,1,1,1,1.1,2.1,2,2,2.1
Clay Minerals,3(1),28(3),16(2),19(2),,,,Al2O3,2.7,2.6,2,2.1,5.4,4.9,3.8,4.2
Opal-CT,7(1),0,0,0,,,,Cr2O3,0.3,0.3,0.3,0.3,0.6,0.6,0.6,0.6
Amorphous,36(9),40(10),52(13),51(13),,,,FeOT,5.5,16.8,10.5,9.7,11.2,31.7,20.4,19
Total,100,100,100,100,,,,MnO,0.2,0.1,0.2,0.1,0.5,0.1,0.4,0.3
,,,,,,,,MgO,4.1,0,1.2,1.6,8.3,0,2.2,3.1
,Crystalline Mineralogy,,,,,,,CaO,0,1.9,3.9,2.9,0,3.6,7.6,5.7
,Oudam,Marimba,Quela,Sebina,,,,Na2O,0.8,1,0.9,1,1.7,2,1.7,2.1
Plagioclase,52.3(11),44.3(30),43.6(33),37.9(22),,,,K2O,0.8,0.5,0.4,0.6,1.7,1,0.8,1.1
Hematite,25.6(7),20.4(14),22.7(17),23.7(23),,,,P2O5,0.5,1,1.1,0.6,1,2,2.1,1.2
Pyroxene,8.1(17),2.2(19),7.3(19),6.9(38),,,,SO3,1.2,3.6,6.1,4.7,2.5,6.8,11.7,9.3
Anhydrite,6.4(5),11.7(14),9.4(5),16.9(10),,,,Cl,0.3,0.5,0.9,1,0.7,0.9,1.7,2.1
Gypsum,5.8(4),6.6(9),1.3(1),3.5(2),,,,Total,49.1c,52.9c ,51.5d,51.1d,100,100,100,100
Quartz,1.8(4),1.7(6),1.1(7),0.9(2),,,,aOxides and Cl are reported in wt %,,,,,,,,
Sanidine,--,7.5(18),6.5(13),4.2(13),,,,bOpal-CT considered an amorphous phase,,,,,,,,
Bassanite,--,3.9(10),5.9(3),3.5(2),,,,cAPXS-constrained amorphous abundance,,,,,,,,
Jarosite,--,1.7(8),1.4(5),2.5(5),,,,dFULLPAT-derived amorphous abundance,,,,,,,,
Halite,--,--,0.8(2),--,,,,,,,,,,,,
Total,100,100,100,100,,,,,,,,,,,,
aAbundances in wt %; uncertainties reported as 1σ.,,,,,,,,,,,,,,,,