Research Article

Geochemistry, Paragenesis, and Wall-Rock Alteration of the Qatruyeh Iron Deposits, Southwest of Iran: Implications for a Hydrothermal-Metasomatic Genetic Model

Figure 9

(a) Distribution of the Chah Anjir samples on A-B diagram (A = Al − (K + Na + 2Ca) and B = Fe + Mg + Ti) [31], (b) separation of I-type and A-type magma series according to Zn-SiO2 Diagrams [32], (c) SiO2-Fe2O3/FeO variation diagram showing fields for magnetite series and ilmenite series granites and intrusive rocks associated with hydrothermal iron deposits [33], (d) Chondrite-normalized REE distribution pattern of the Qatruyeh samples (Chah Anjir intrusive rocks, layered magnetite ores, massive magnetite ores, and hematite ores). Abbreviations: peraluminous (I = muscovite or muscovite > biotite, II = biotite > muscovite, and III = biotite) and metaluminous (IV = mainly hornblende and biotite + orthopyroxene + clinopyroxene + epidote + titanite, V = clinopyroxene ± epidote ± titanite, and VI = exceptional igneous rocks (e.g., carbonatite).
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