Figure 3. (a) Exposure of biotite-pyroxene gneiss; (b) coarse grained texture of biotite-pyroxene gneiss consisting of quartz (Qtz), orthopyroxene (Opx), potassic feldspar (Kfs), biotite (Bt), (plane-polarized light); (c) exposure of biotite granite; (d) granular texture of biotite granite showing the mineral composition (plane-polarized light); (e) outcrop view of charnockite; and (f) granoblastic heterogranular texture and mineral composition (plane-polarized light).

From

Petrography and Major Element Geochemistry of the Endengue Iron Formations, Ntem Complex, South Cameroon

Robinson Tchatchueng, Habib Dadjo Djamo, Timoléon Ngnotué, Evine Laure Tanko Njiosseu, Mamadou Traoré, Cyriel Moudioh, Hervé Wabo, Cédric Djeutchou, Jean Paul Nzenti

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