From: Mineralogy and diagenetic impacts on chemical composition of Paleozoic mudrocks, southwestern Sinai, Egypt
Age
Paleozoic
Early Paleozoic
Late Paleozoic
Formations
Abu Hamata
Adedia
El Hashash
Magharet El Maiah
K
4.53
4.17
0.37
0.69
Na
1.19
1.07
0.04
0.25
K/Na
3.81
3.90
9.25
2.76