GEOCHEMICAL AND MINERALOGICAL RELATIONSHIPS BETWEEN MANGANESE SILICATE MINERALS AND ZINC ORE MINERALIZATION AT GÜRECE CONTACT AUREOLE (BIGA PENINSULA, NW-TURKEY)
Öz
In this study, we show the diversity of
bimetasomatic skarn mineralisation and associated zinc ore formation. At
Bakırlık Tepe hill we observed in a roof pendant contact
metamorphosed units of the Çetmi
Mélange bordering the monzonitic Gürece Pluton of Eocene age.
Additionally, two types
of endoskarn were identified in this zone;
diopside- bearing monzonite along
the garnet skarn
and hedenbergite-bearing monzogabbro along the pyroxene
skarn contacts. The ratio
of garnet skarn/pyroxene skarn is about 201. The presence of manganiferous minerals
(johannsenite, Mn- garnet, Mn-chlorite4 in the pyroxene
skarn provides evidence
for sphalerite mineralization at temperatures less than
400°C, under high oxygen fugacity and in the presence of water-enriched fluids.
Anahtar Kelimeler
Kaynakça
- ' !$ >?jj?> $ F " 2#$4'L*
- &'1NE*1D6$
Ayrıntılar
| Birincil Dil | İngilizce |
|---|---|
| Bölüm | Makaleler |
| Yazarlar | |
| Yayımlanma Tarihi | 28 Aralık 2013 |
| Yayımlandığı Sayı | Yıl 2012 Cilt: 25 Sayı: 2 |