WOLLASTONITE-GARNET SKARNS OF DEMIR-TEPE, TAHTAKOPRU (PROVINCE OF BURSA, TURKEY)

Wollastonite-garnet skarns of Demir Tepe (Turkey) are developed in gra phitic marbles, forming roof-pendants in the granodioritic Tertiary pl uton of Goynukbelen, at the contact of stocks and veins of diorite-mon zodiorites that intrude the main pluton. Skarn formation includes seve ral superposed stages -main stage: diopside-andesine and anorthite-dio pside-grossular rich garnet (or anorthite-diopside -wollastonite) endo skarns and exoskams made of massive wollastonite; -anorthite-diopside- andradite rich garnet veins; -scapolitisation; -development of massive garnet; -several later stages including copper mineralization, altera tion into zeolites... (C) Academie des sciences/Elsevier, Paris.