Journal ArticleDOI
The radiogenic hypothesis of formation of periore zones of hematitization in hydrothermal uranium deposits
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In the peripheral, more dense areas surrounding impregnated pitchblende ores, the red glowing halo can range from fractions of a millimeter to tens of meters.Abstract:
Halos of hematitization generally occur in the peripheral, more dense areas surrounding impregnated pitchblende ores, in rocks surrounding veinlets of pitchblende and in the gouge of these veinlets. The breadth of the reddening halo in the rocks can range from fractions of a millimeter to tens of meters. Developing at the edges of oxides and silicates of uranium (IV) and forming the outermost zone, hematite and goethite are present as finely dispersed particles impregnating grains of feldspar and sometimes quartz, chalcedony, calcite and replacing ferrous iron minerals such as chlorite, ankerite, siderite, biotite, pyrite, magnetite and ilmenite. In the immediate vicinity of the ore veins and phenocrysts of pitchblende, an additional quantity of modal iron is often found as oxide, indicating that this element has been carried in and precipitated as a result of oxidation or alkalization of hydrothermal solutions. 15 references, 1 figure.read more
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OtherDOI
Geology of uranium-bearing veins in the conterminous United States
TL;DR: In this article, the purpose and scope of the project are described. But they do not specify the scope of their work and do not provide any details of the work's history.
Journal ArticleDOI
The reddening of minerals in uranium-bearing veins
Yu.M. Dymkov,B. V. Brodin +1 more
TL;DR: In this paper, various types of iron carbonate hematization (siderite, ankerite, iron mangano-calcite) in uranium bearing veins are described.
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