Wollastonite-garnet skarns of Demir Tepe, Tahtaköprü (province of Bursa, Turkey)

Wollastonite-garnet skarns of Demir Tepe (Turkey) are developed in graphitic marbles, forming roof-pendants in the granodioritic Tertiary pluton of Goynukbelen, at the contact of stocks and veins of diorite-monzodiorites that intrude the main pluton. Skarn formation includes several superposed stages -main stage: diopside-andesine and anorthite-diopside -grossular rich garnet (or anorthite-diopside--wollastonite) endoskarns and exoskarns made of massive wollastonite; -anorthite-diopside-andradite rich garnet veins; -scapolitisation; -development of massive garnet; -several later stages including copper mineralization, alteration into zeolites...