Titlebook: Sediment-Hosted Zn-Pb Ores; Lluís Fontboté,Maria Boni Book 1994 Springer-Verlag Berlin Heidelberg 1994 Ore Deposits.Trias.Wirtschaftsgeolo

companion

重叠

Dolostone-Hosted Sulfide Occurrences in Silurian Strata, Appalachian Basin of New Yorkhe environment of deposition was that of a shoaling-upward sequence from subtidal to intertidal and, subsequently, a supratidal setting followed by subaerial emergence. Under subaerial conditions now mineral-filled former vugs and cavities, and solution breccias, resulted from dissolution of evapori

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网络添麻烦

theta-waves

Relations Between Diapiric Salt Structures and Metal Concentrations, Gulf Coast Sedimentary Basin, S decade. Known deposits of this class are of low tonnage (10 to 15 million t, typically) and modest grade (5 to 15% combined Zn + Pb). However, exploration for these deposits has been limited, particularly in the USA, and the average deposit size yet may be found to be greater. Mineralogically, salt

Axon895

Sulfide Breccia in Fossil Mississippi Valley-Type Mud Volcano Mass at Decaturville, Missouri, USAand the small carbonate rock fragments show remnant textures typical of marine carbonates. The isotopic compositions of the carbonate fragments and the “flow” carbonates of the breccia compare well with those of sedimentary carbonates from the host sequence of Mississippi Valley-type stratiform lead

Landlocked

Trace Element Distribution of Middle-Upper Triassic Carbonate-Hosted Lead-Zinc Mineralizations: The sic. Trace element analysis of 111 sulphide-rich samples, representing the whole deposit, has revealed a zonal distribution for Ge, Cd, Ga, TI, As, Sb. The considered trace elements are linked to sphalerite (Ge-Cd-Ga association) and to specific Pb-As-(Sb)-S phases (Tl-As-Sb association). The obtain

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sclera

Genesis of Sphalerite Rhythmites from the Upper-Silesian Zinc-Lead Deposits — A Discussion”) known from the Mississippi Valley-type (MVT) Zn-Pb deposits. The origin of these ores is controversial and the discussion reflects the differences in syngenetic versus epigenetic interpretation. Meso-, macro- and microscopic observations lead to the conclusion that the ores are of metasomatic ori

Inoperable

Geochemometrical Studies Applied to the Pb-Zn Deposit Bleiberg/Austriaications in an objective, quantitative way..In a case study geochemical information on the Pb-Zn deposit Bleiberg/Austria is analyzed by using statistical-graphical methods studying singleelement features as well as multivariate patterns in an exploratory, unconventional way. The results show that i