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Geochemical Atlas – Erzgebirge and Vogtland

Lead in stream sediments

Produktform: Karte

Lead (Pb) shows a slightly right skewed log distribution. The arithmetic average is 74 mg/kg, the median 42 mg/kg. A maximum concentration of 8460 mg/kg stands opposite a minima of 0.2 mg/kg. A major plumbiferous enrichment covers the gneiss dominated northeastern study area with a 15 km x 8 km core zone of Pb 250 mg/kg at the central Freiberg mining district and extending into the Halsbrücke, Brand-Erbisdorf and Muldenhütten sub districts. In the southeastern part of the Freiberg mining district even Pb 1000 mg/kg are reached, which, together with strongly elevated Sn and Zn levels, might indicate industrial contamination. Pb was mined and processed for decades as either as a main target or a by-product of Ag and other metals. Furthermore, an N striking area 3 km NE of the Sadisdorf deposit also exhibits Pb 250 mg/kg. Together with the Freiberg mining district, the entire region is enclosed by a 40 km aureole of Pb 100 mg/kg. In contrast, in the central Erzgebirge, areas of Pb 60 mg/kg coincide only slightly with the major polymetallic mining districts like Annaberg-Buchholz, Marienberg-Wolkenstein, Ehrenfriedersdorf, Schneeberg and Schwarzenberg. Notwithstanding, Pb is almost equally elevated across the mica schist dominated northern parts of the study area without well-known mineralisations e.g. between the deposits of Langenstriegis and Augustusburg and in the narrow NW-striking zone between the Thum deposit and Stollberg. The entire “tin corridor” between the deposits of Ehrenfriedersdorf and Augustusburg is co-enriched in Pb. Elevated contents seem to be truncated by the Gera-Jachymov-Fault Zone towards the SW where even the Sn mining district of Gottesberg does not show relevant Pb levels. Minima of Pb weiterlesen

Dieser Artikel gehört zu den folgenden Serien

Sprache(n): Englisch

ISBN: 978-3-948423-21-6 / 978-3948423216 / 9783948423216

Verlag: Beak Consultants

Erscheinungsdatum: 30.04.2019

Seiten: 1

Auflage: 1

Zielgruppe: Geowissenschaften, Forschung, Lehre, Ausbildung, Rohstoffwirtschaft

Autor(en): Stefan Schaefer, Peter Bock, Beak Consultants GmbH, Andreas Dr. Barth, Enrico Kallmeier, Claus Dr. Legler, Cornelia Repper

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