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Autunite - Wikipedia, the free encyclopedia
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General Autunite Information ... Autunite Image ... Autunite Crystallography...
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The Mineral AUTUNITE ... Autunite is one of the more attractive and popular radioactive minerals. To state the obvious, the uranium in its chemical formula provides this radioactivity. Autunite is probably the most popular uranium mineral for collectors.
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The Mineral META-AUTUNITE ... Group: Meta-autunite ... Meta-autunite is a dehydration product of its close cousin, autunite, hence the name. When the mineral autunite loses water and converts to meta-autunite, it becomes what is known as a pseudomorph.
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Autunite Group . A secondary mineral resulting from the oxidation of primary uranium minerals in hydrothermal veins, granite pegmatites, etc. ... Classification of Autunite...
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Recently I have discovered a very large deposit of Autunite. I have a CDV 700 geiger counter which peaks out with the probe up to 1 inch away from a specimen and the shield open. That's over 30,000 counts/minute. With the shield closed the readings are 2 to 5 mR/Hr. How dangerous is this amount of radioactivity?
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Information on the mineral Autunite ... ; Unless sealed in glass, all specimens should be considered to have become Meta-Autunite within a few months of being exposed to ambient air. (See Notes for more information).
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From Wikimedia Commons, the free media repository ... Media in category "Autunite" ... Autunite 2 in rock H...; 88,673 bytes;
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Mineral Information on the WEB ... lemon-sulfur yellow, yellow-green, green ... A photo of the mineral autunite...
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Autunite, an ore of uranium, is found as a secondary mineral in oxidation zones of uranium deposits. As seen in the pictures above, the mineral is usually bright yellow to fluorescent green. The mineral's crystals are usually tabular, but can grow as scaly aggreagates.
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