Results 111 to 120 of about 193 (140)

Geochemical Investigations on the Pegmatite Minerals. VII-IX. IX. Relation between Stages of Crystallization and Chemical Composition of Micas Containing Rare Alkali Metals in Sodegasawa Pegmatite, Hirugawa-mura, Ena Gun, Gifu-Prefecture.

Nippon kagaku zassi, 1956
openaire   +2 more sources

Estimating Lithium Concentrations in Groundwater Used as Drinking Water for the Conterminous United States. [PDF]

Environ Sci Technol
Lombard MA, Brown EE, Saftner DM, Arienzo MM, Fuller-Thomson E, Brown CJ, Ayotte JD.   +6 more
europepmc   +1 more source

Provenance, diagenesis, and depositional environment of Miocene Kamlial Formation, Azad Jammu and Kashmir, Sub Himalayas, Pakistan: Evidences from field observations and petrography. [PDF]

Heliyon
Khan M, Khan R, Islam SU, Khan A, Zhong Y, Awwad FA, Ismail EAA.   +6 more
europepmc   +1 more source

Effects and differences of various concentration techniques on the evolution of therapeutic components in Lushan geothermal water. [PDF]

Sci Rep
Zhang B, Fang Z, Xuan K, Ma W, Gao B, Liu Y, Huang D, Xie S, Ding Y.   +8 more
europepmc   +1 more source

Bioleaching of uranium from ores and rocks using filamentous fungi. [PDF]

Front Microbiol
Bhatti TM, Tuovinen OH.
europepmc   +1 more source

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The potential of lithium in alkali feldspars, quartz, and muscovite as a geochemical indicator in the exploration for lithium-rich granitic pegmatites: A case study from the spodumene-rich Moblan pegmatite, Quebec, Canada

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
exaly   +2 more sources

Alkali metal and rare earth element evolution of rock-forming minerals from the Gatumba area pegmatites (Rwanda): Quantitative assessment of crystal-melt fractionation in the regional zonation of pegmatite groups

Geochimica Et Cosmochimica Acta, 2014
Abstract This study presents a general model for the evaluation of Rayleigh fractional crystallisation as the principal differentiation mechanism in the formation of regionally zoned common and rare-element pegmatites. The magmatic evolution of these systems from a granitic source is reconstructed by means of alkali element and rare earth element ...
Niels Hulsbosch, Jan Hertogen, Stijn Dewaele   +2 more
exaly   +2 more sources

Mineralogy and Geochemistry of Alkali Beryl from the Rare Metal Bearing Pegmatites of Marlagalla-Allapatna, Mandya District, Karnataka

Journal of the 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, R. P. Sinha, P. Krishnamurthy, K. V. G. Krishna, R. Viswanathan, D. C. Banerjee   +5 more
exaly   +2 more sources

Distribution of rare alkali metals in chamber pegmatites as criterion in prospecting for optical fluorite and piezoquartz

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 ...
exaly   +2 more sources

Theoretical studies of the alteration of spodumene, petalite, eucryptite and pollucite in granitic pegmatites: exchange reactions with alkali feldspars

Contributions To Mineralogy and Petrology, 1993
The ratios Na/Li, K/Li, Na/Cs and K/Cs have been calculated for exchange equilibria among the Li and Cs silicates spodumene, petalite, eucryptite, and pollucite, and the alkali feldspars albite and K-feldspar plus quartz, in pure water and in chloride solutions at temperatures from 100° to 700°C and pressures from 0.5 to 4 kbar, using available ...
Scott A Wood, Anthony E Williams-Jones
exaly   +2 more sources