Geochemistry of the stratiform zinc-lead-barite mineralization at the Meggen mine, Federal Republic of Germany | Posted on:1989-08-15 | Degree:Ph.D | Type:Dissertation | University:The Pennsylvania State University | Candidate:Geer, Kristen Anders | Full Text:PDF | GTID:1470390017955150 | Subject:Geochemistry | Abstract/Summary: | | The Meggen orebody (Federal Republic of Germany) is a stratiform Zn-Pb-Ba deposit hosted by middle-upper Devonian pelagic limestone in a predominantly shale sequence.;Sulfide ore wedges out into barite; barite wedges into limestone. Ore consists of pyrite (72 wt.%), sphalerite (10%) and galena (1%) thinly interbedded with shale, and is overlain by a thin (0-0.5m) tuffitic shale.;Four distinct morphologies of pyrite are present in sulfide ore. The sequence of mineralization, pyrite;Metal content in stratigraphic sections is variable; Fe content is highest in the top of the ore section, (Zn + Pb) is highest in lower ore. Ore constituents are zoned laterally: ore thickness, sulfide and Fe contents are highest in the west of the mine, while the highest concentrations of Zn and Pb are some 0.5 to 1 kn east of the high-Fe zone. Mineralization is most intense in the west of the mine, and hydrothermal fluids probably discharged from this area.;Sulfur contents in unmineralized sediments are low, and ;Sphalerite and galena ;Ore formed by sulfide replacement of carbonate sediments. Hydrothermal fluids were discharged into the carbonate unit, which was sealed by the overlying tuffitic shale. Hydrothermal fluids were metal- and H... | Keywords/Search Tags: | Ore, Hydrothermal fluids, Mineralization, Shale | | Related items |
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