کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4739565 1358455 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Carbonaceous substance of the Sukhoi Log gold deposit (East Siberia)
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی
پیش نمایش صفحه اول مقاله
Carbonaceous substance of the Sukhoi Log gold deposit (East Siberia)
چکیده انگلیسی

Insoluble carbonaceous substance (ICS) at the Sukhoi Log gold deposit has been studied following the scheme: source shales — concentrates — residual substance of rocks. Examination by electron microscopy, transmission electron microscopy with electron microdiffraction, thermography, and mass spectrometry revealed several morphogenetic ICS varieties: dot-drop-like, honeycomb, single graphite crystals, and spherical graphite crystals.Study of source shales and concentrates has shown their similar carbon isotope compositions (δ13Cav = 18.03–17.54‰). Residual carbonaceous substance is characterized by a heavy carbon isotope composition (δ13Cav = 10‰). Its enrichment with heavy carbon isotope, as compared with the source rocks, calls for special geochemical studies. The ICS heterogeneity in the Sukhoi Log shales points to variations in the physicochemical settings of ore formation at the deposit.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Russian Geology and Geophysics - Volume 49, Issue 6, June 2008, Pages 371-377