35 research outputs found
Characterization and nutrient release from silicate rocks and influence on chemical changes in soil
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Final technical report for the project Land Restoration Through Waste Management in India
No full textBacterial lepidocrocite and hematite in chert
No full textLepidocrocite and hematite associated with fossilized bacterial cells have been detected in 2.0 Ga red chert from the Gunflmt Iron Formation by electron microprobe techniques and transmission electron microscopy. The chert consists mainly of quartz with traces of lepidocrocite and hematite. Filamentous and coccoid cyanobactena occur inside accumulations of Si and Fe with trace amounts of AI , Mg , and C. The ancient microorganisms served as nucleation sites for the precipitation oi iron. The fossilized microbial cells were first mineralized by lepidocrocite which later was transformed during diagenesis to hematite.Tazaki K., Ferris F.G., Wiese R.G., Fyfe W.S. Bacterial lepidocrocite and hematite in chert. In: Proceedings of the 9th international Clay Conference, Strasbourg, 1989. Vol I : Clay-organic interactions. Clay minerals in soils. Strasbourg : Institut de Géologie – Université Louis-Pasteur, 1990. pp. 35-44. (Sciences Géologiques. Mémoire, 85
Bacterial lepidocrocite and hematite in chert
No full textLepidocrocite and hematite associated with fossilized bacterial cells have been detected in 2.0 Ga red chert from the Gunflmt Iron Formation by electron microprobe techniques and transmission electron microscopy. The chert consists mainly of quartz with traces of lepidocrocite and hematite. Filamentous and coccoid cyanobactena occur inside accumulations of Si and Fe with trace amounts of AI , Mg , and C. The ancient microorganisms served as nucleation sites for the precipitation oi iron. The fossilized microbial cells were first mineralized by lepidocrocite which later was transformed during diagenesis to hematite.Tazaki K., Ferris F.G., Wiese R.G., Fyfe W.S. Bacterial lepidocrocite and hematite in chert. In: Proceedings of the 9th international Clay Conference, Strasbourg, 1989. Vol I : Clay-organic interactions. Clay minerals in soils. Strasbourg : Institut de Géologie – Université Louis-Pasteur, 1990. pp. 35-44. (Sciences Géologiques. Mémoire, 85
Environmental impact of coal utilization in India : pollution associated with coal utilization
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