بررسی واحدهای سنگی و انواع آلتراسیون در کانسار منگنز ذاکری (جنوب غربی سبزوار)

Zakeri manganese ore deposit is located in Khorasan Razavi province, 88 kilometers southwest of Sabzevar. This area is structurally in the upper part of the Upper Cretaceous volcanosedimentary sequence of zone is located in Central Iran and subzone of Sabzevar. Protrusion of the area consists of alternating thin pelagic limestone, marl, limestone and along faults and altered andesite, green tuff and can be seen in most parts of bentonite. Host rocks, mainly consist of rhyolite and dacite tuff with inclusion of jasper and chert. Like flysch sediments deposits consist of respective of alternating green, gray silty marl, sandstone and limestone. Manganese deposits on the lenses and layers of different sizes can be seen. Based on mineralogical and Laboratory studies Pyrolusite (MnO2) , Cryptomelane (KNasMnO6.2H2O), Psilomelane (Ba.H2O)2 MnOro, Manganite (MnOOH) are major minerals in the region, The main gangue minerals are quartz and calcite

کلیدواژه ها:

manganese ، deposit ، tuff ، Zakeri ، dacite