Zn-Pb Ores of Mississippi Valley Type in the Lycksele-Storuman District, Northern Sweden: A Possible Rift-Related Cambrian Mineralisation Event

The epigenetic Zn-Pb deposits in the Lycksele-Storuman ore district, northern Sweden, are hosted by Paleoproterozoic basement near the margin of the Caledonian mountains. A paleogeographic reconstruction suggests that platform sediments, including Cambrian shales, overlaid the mineralised basement....

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Bibliographic Details
Published in:Minerals
Main Authors: Kjell Billström, Curt Broman, Jens Schneider, Warren Pratt, Göran Skogsmo
Format: Article in Journal/Newspaper
Language:English
Published: MDPI AG 2012
Subjects:
Zn-Pb mineralisation
cambrian
rifting
fluid inclusions
ages
isotopic tracers
Mineralogy
QE351-399.2
Northern Sweden
Online Access:https://doi.org/10.3390/min2030169
https://doaj.org/article/2053af3a2f5e42a6b9977a0d828e2e5d
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Summary:The epigenetic Zn-Pb deposits in the Lycksele-Storuman ore district, northern Sweden, are hosted by Paleoproterozoic basement near the margin of the Caledonian mountains. A paleogeographic reconstruction suggests that platform sediments, including Cambrian shales, overlaid the mineralised basement. The mineralisation type, containing sphalerite, galena, calcite and fluorite, is confined to veins and breccias and interpreted to be of Mississippi Valley Type (MVT) style. There is no appreciable wall rock alteration. Fluid inclusion work reveals coexisting aqueous and hydrocarbon fluids. Ore deposition is interpreted to have occurred during mixing of two fluids; a cool (

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