Fig. 9 | Scientific Reports

Fig. 9

From: Fertile high-K magmatism and hydrothermal alteration zone associated with porphyry copper mineralization in Samra area, SE Sinai, Egypt

Fig. 9

(a) Plotting the metavolcanics samples in Na2O + K2O vs. SiO2binary diagram44; (b) Alkalis-silica diagram45 of the metavolcanics; (c) Zr vs. TiO2 diagram46 of the metavolcanics rocks, (d) plotting the metavolcanics samples in SiO2vs. Nb diagram47, (e) Classification the studied metasediments according to log (Na2O/K2O) vs. log (SiO2/Al2O3) diagram52, (f) Classification the studied metasediments according to log (Fe2O3/ K2O) vs. log (SiO2/Al2O3) diagram53, (g) Weathering history of the studied metasediments accordingAl2O3–(CaO + Na2O)–K2O diagram49, (h) Log (K2O/Na2O) vs. SiO2 diagram50 illustrate the geological tectonic settings of the volcaniclastic metasediments, (i) Al2O3/SiO2 vs. (Fe2O3* + MgO) discrimination diagrams51 provide details of geological tectonic settings of the volcaniclastic metasediments. (j) Geochemistry of the granitic intrusive rocks at Samra area. (k) Total alkalis (Na2O + K2O) versus SiO2, (l) K2O versus SiO2; (m) Al2O3-CaO-(Na2O + K2O) diagram, (n) K2O versus Na2O, (e) Nb (ppm) versus Y (ppm), (o) Nb + Y (ppm) versus Rb (ppm).

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