Petrographic and Chemical Study of the Lower Ordovician Uranium-Bearing Sedimentary Unit at Tåsjö Lake

31 March 1971

journal article
research article
Published by Taylor & Francis in Geologiska Föreningen i Stockholm Förhandlingar

Vol. 93 (1) , 117-135
https://doi.org/10.1080/11035897109451932

Abstract

A uranium-bearing unit, stratigraphically classified as Lower Ordovician, is included in the border sedimentary sequence of the Swedish Caledonides at Tåsjö, Västernorrland County. The parts of the sedimentary rocks rich in uranium are characterized by the mineral association glauconite, calcite, siderite, dolomite, carbonate-fluor-apatite (marine apatite), and quartz. Most of the uranium is localized in the mineral apatite. Investigations of the way in which this mineral occurs in the rocks indicate that the uranium is syngenetic with the deposition of the sediment and the formation of the apatite.

Keywords

This publication has 3 references indexed in Scilit:

Physical and chemical factors in the formation of marine apatite
Economic Geology, 1969
Geochemistry of uranium in apatite and phosphorite
Published by US Geological Survey ,1958
Origin and Classification of Chemical Sediments in Terms of pH and Oxidation-Reduction Potentials
The Journal of Geology, 1952