The amount of elements in plants is important for biogeochemical explorations. Some plants which were accumulated extremely elements, are called indicator plants. In this study, the 11 plant species and soil samples w...The amount of elements in plants is important for biogeochemical explorations. Some plants which were accumulated extremely elements, are called indicator plants. In this study, the 11 plant species and soil samples were collected boron deposits area in Kirka (Eskisehir). Boron is determinated in plants (leaves and twigs) and soil samples. Additionally, statistical relations were established between the B values of plant and soil samples and three plants were only found. The boron in twigs of Puccinellia intermedia (n = 17, r = 0.7274), twigs of Genista aucheri (n = 26, r = 0.8581 and leaves of Pinus nigra (n = 16, r = 0.6805) species are found 119, 81 and 115 mg/kg respectively. This species was reflected boron in soil and their used indicator plant for boron. The indicator plants could be successfully used for biogeochemical prospecting and environmental monitoring.展开更多
Pancarli Ni-Cu±(PGE)sulfide deposit occurs in the Neoproterozoic basement complex of the Bitlis massif,which is one of the Andean-type active continental margin fragments with arc-type assemblages represented by ...Pancarli Ni-Cu±(PGE)sulfide deposit occurs in the Neoproterozoic basement complex of the Bitlis massif,which is one of the Andean-type active continental margin fragments with arc-type assemblages represented by the Cadomian orogenic belt.Pancarli sulfides are associated with quartzo-feldspathic gneisses(country rock)and mafic intrusions(host rock).Composed of only semi-massive ore,the Ni-Cu±(PGE)sulfide deposit is a small-scale deposit,and it does not contain net-textured and disseminated ore.The mineral assemblage comprises pyrrhotite,pentlandite,and chalcopyrite.The semi-massive ore samples contain 2.2 wt.%-2.9 wt.%Ni,0.8 wt.%-2.2 wt.%Cu(Cu/(Cu+Ni)=0.2-0.5)and 0.13 wt.%-0.17 wt.%Co.The Cu/Ni ratios(average 0.57)are consistent with the segregation of sulfides from a basaltic magma.Low Pt+Pd100%S values of 0.08 ppm-0.89 ppm,relatively low Pt/Pd ratios of 0.2-1.4,and Pd/Ir ratios of 4.5-39 have also been revealed.These values demonstrate that the magma reached S saturation before its emplacement and the mineralization with high Cu/Pd ratios formed by sulfides segregated from a PGE-depleted magma.δ^34S isotope values(average-3.1‰)of Pancarli sulfides are lower than mantle source.Negativeδ^34S value indicates contamination from surrounding rocks.Concerning the composition,remobilization style and magma type,the Pancarli Ni-Cu±(PGE)sulfide deposit is similar to the deposits associated with Andean-type magmatic arcs located in the convergent plate margin settings.展开更多
文摘The amount of elements in plants is important for biogeochemical explorations. Some plants which were accumulated extremely elements, are called indicator plants. In this study, the 11 plant species and soil samples were collected boron deposits area in Kirka (Eskisehir). Boron is determinated in plants (leaves and twigs) and soil samples. Additionally, statistical relations were established between the B values of plant and soil samples and three plants were only found. The boron in twigs of Puccinellia intermedia (n = 17, r = 0.7274), twigs of Genista aucheri (n = 26, r = 0.8581 and leaves of Pinus nigra (n = 16, r = 0.6805) species are found 119, 81 and 115 mg/kg respectively. This species was reflected boron in soil and their used indicator plant for boron. The indicator plants could be successfully used for biogeochemical prospecting and environmental monitoring.
基金supported by the General Directorate of Mineral Research and Exploration。
文摘Pancarli Ni-Cu±(PGE)sulfide deposit occurs in the Neoproterozoic basement complex of the Bitlis massif,which is one of the Andean-type active continental margin fragments with arc-type assemblages represented by the Cadomian orogenic belt.Pancarli sulfides are associated with quartzo-feldspathic gneisses(country rock)and mafic intrusions(host rock).Composed of only semi-massive ore,the Ni-Cu±(PGE)sulfide deposit is a small-scale deposit,and it does not contain net-textured and disseminated ore.The mineral assemblage comprises pyrrhotite,pentlandite,and chalcopyrite.The semi-massive ore samples contain 2.2 wt.%-2.9 wt.%Ni,0.8 wt.%-2.2 wt.%Cu(Cu/(Cu+Ni)=0.2-0.5)and 0.13 wt.%-0.17 wt.%Co.The Cu/Ni ratios(average 0.57)are consistent with the segregation of sulfides from a basaltic magma.Low Pt+Pd100%S values of 0.08 ppm-0.89 ppm,relatively low Pt/Pd ratios of 0.2-1.4,and Pd/Ir ratios of 4.5-39 have also been revealed.These values demonstrate that the magma reached S saturation before its emplacement and the mineralization with high Cu/Pd ratios formed by sulfides segregated from a PGE-depleted magma.δ^34S isotope values(average-3.1‰)of Pancarli sulfides are lower than mantle source.Negativeδ^34S value indicates contamination from surrounding rocks.Concerning the composition,remobilization style and magma type,the Pancarli Ni-Cu±(PGE)sulfide deposit is similar to the deposits associated with Andean-type magmatic arcs located in the convergent plate margin settings.
