Results 151 to 160 of about 3,307 (182)
Some of the next articles are maybe not open access.
Journal Geological Society of India, 1999
Abstract White coloured alkali beryl from the pegmatites of Mariagalla-Allapatna in Mandya district, Karnataka contains distinctly higher alkali elements (Na, Li, Rb, Ca) and relatively low beryllium oxide (c. 11 % BeO) compared to normal beryl. Beryl occurs mostly between graphic intermediate zone and quartz core in the complexly zoned,
Chanchal Sarbajna +5 more
openaire +1 more source
Abstract White coloured alkali beryl from the pegmatites of Mariagalla-Allapatna in Mandya district, Karnataka contains distinctly higher alkali elements (Na, Li, Rb, Ca) and relatively low beryllium oxide (c. 11 % BeO) compared to normal beryl. Beryl occurs mostly between graphic intermediate zone and quartz core in the complexly zoned,
Chanchal Sarbajna +5 more
openaire +1 more source
Geochemistry: Exploration, Environment, Analysis, 2013
The phosphorus contents of alkali feldspars of 80 pegmatite veins from the Chinese Altay, NW China, were determined by electron microprobe in this study. The alkali feldspars of the barren pegmatites are poor in phosphorus and range from <0.01–0.05 wt% P 2 O 5 .
Tang Yong, Zhang Hui, Su Guizhen
openaire +1 more source
The phosphorus contents of alkali feldspars of 80 pegmatite veins from the Chinese Altay, NW China, were determined by electron microprobe in this study. The alkali feldspars of the barren pegmatites are poor in phosphorus and range from <0.01–0.05 wt% P 2 O 5 .
Tang Yong, Zhang Hui, Su Guizhen
openaire +1 more source
Journal of Geochemical Exploration, 2019
Abstract The Li concentration of alkali feldspars, quartz, and muscovite from the spodumene-rich Main Sill of the Moblan pegmatite in Quebec, Canada, was used to evaluate the potential of the most common minerals in granitic pegmatites as indicators for the presence of Li-aluminosilicate mineralization. In Moblan, alkali feldspar crystals incorporate
Victoria Maneta, Don R. Baker
openaire +1 more source
Abstract The Li concentration of alkali feldspars, quartz, and muscovite from the spodumene-rich Main Sill of the Moblan pegmatite in Quebec, Canada, was used to evaluate the potential of the most common minerals in granitic pegmatites as indicators for the presence of Li-aluminosilicate mineralization. In Moblan, alkali feldspar crystals incorporate
Victoria Maneta, Don R. Baker
openaire +1 more source
Canadian Journal of Earth Sciences, 1998
The 579.8 ± 2.2 Ma (40Ar-39Ar, muscovite) Georgeville Pluton in mainland Nova Scotia is an epizonal body consisting of alkali feldspar granite and related pegmatite. The pluton intrudes the ca. 619-608 Ma arc-related rocks of the Georgeville Group, which comprises part of West Avalonia, the largest terrane in the Canadian Appalachians.
J. Brendan Murphy +2 more
openaire +1 more source
The 579.8 ± 2.2 Ma (40Ar-39Ar, muscovite) Georgeville Pluton in mainland Nova Scotia is an epizonal body consisting of alkali feldspar granite and related pegmatite. The pluton intrudes the ca. 619-608 Ma arc-related rocks of the Georgeville Group, which comprises part of West Avalonia, the largest terrane in the Canadian Appalachians.
J. Brendan Murphy +2 more
openaire +1 more source
International Geology Review, 1965
The distribution of rubidium and cesium in microcline-perthite was studied in five topaz- and fluorite-bearing zoned pegmatites. Determinations of mineral paragenesis aided in the interpretation of the results of the rare alkali metal determinations. The study lead to the following conclusions: 1) The Rb content in zoned fluorite and topaz pegmatites ...
openaire +1 more source
The distribution of rubidium and cesium in microcline-perthite was studied in five topaz- and fluorite-bearing zoned pegmatites. Determinations of mineral paragenesis aided in the interpretation of the results of the rare alkali metal determinations. The study lead to the following conclusions: 1) The Rb content in zoned fluorite and topaz pegmatites ...
openaire +1 more source
Alkali-rich replacement zones in evolved NYF pegmatites: metasomatic fluids or immiscible melts?
2019The attached document is the authors’ submitted version of the oral presentation. You are advised to consult the publisher’s version if you wish to cite from it.
Muller, A +4 more
openaire +1 more source
Geochemistry, 1982
According to the evolution of alkali elements (e.g. K, Na, Li) and the relationship among them in the melt-solution of pegmatitic magma, the author divides the pegmatitic process for Vein No. 3 into three main geochemical stages associated with mineralization, i.e., K-Na, Na-Li and K stages.
openaire +1 more source
According to the evolution of alkali elements (e.g. K, Na, Li) and the relationship among them in the melt-solution of pegmatitic magma, the author divides the pegmatitic process for Vein No. 3 into three main geochemical stages associated with mineralization, i.e., K-Na, Na-Li and K stages.
openaire +1 more source
Integrative oncology: Addressing the global challenges of cancer prevention and treatment
Ca-A Cancer Journal for Clinicians, 2022Jun J Mao,, Msce +2 more
exaly