Thermal dependence of colour and ultraviolet luminescence emission in amazonite feldspar
Amazonite is a natural blue-green coloured perthitic Pb-bearing feldspar, structurally hydrous occuring in some pegmatite ore deposits. The irradiation-induced colour in amazonite can develop only in K-feldspar having both, structurally bound H2O and Pb impurities.
García-Guinea, Javier +3 more
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Nascent craft specialization in the Pre-Pottery Neolithic A? Bead making at Shubayqa 6 (northeast Jordan). [PDF]
Thuesen MB +3 more
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Ecological flexibility and adaptation to past climate change in the Middle Nile Valley: A multiproxy investigation of dietary shifts between the Neolithic and Kerma periods at Kadruka 1 and Kadruka 21. [PDF]
Le Moyne C +6 more
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Geochemistry and Cosmochemistry of Potassium Stable Isotopes. [PDF]
Wang K +5 more
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Correlation between the Radiation Induced Colours and the OH-stretching Vibrations of Amazonite
Abstract The changes of colour and the OH-stretching vibrations of amazonites (K-Feldspar) on irradiation have been investigated. It is concluded that the changes are caused by radiation induced crystal defects.
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The toxic influence and biodegradation of carbon nanofibers in freshwater invertebrates of the families Gammaridae, Ephemerellidae, and Chironomidae. [PDF]
Chaika V +15 more
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The bioarchaeology of mid-Holocene pastoralist cemeteries west of Lake Turkana, Kenya. [PDF]
Sawchuk EA +7 more
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Uptake and Fractionation of Thallium by Brassica juncea in a Geogenic Thallium-Amended Substrate. [PDF]
Rader ST +3 more
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Mineralogy and petrology of the amazonite pegmatite at Bakstevalåsen, øvre Eiker
An exotic pegmatite classified as a rare-element gadolinite type amazonite pegmatite is situated in Paleozoic sedimentary rocks, and associated with the peralkaline ekerite granites in the Permian Oslo Region. The amazonite pegmatite is approximately 16 meters long and consists of a coarse-grained, subhedral, green microcline feldspar (amazonite ...
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A monumental cemetery built by eastern Africa's first herders near Lake Turkana, Kenya. [PDF]
Hildebrand EA +14 more
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