Results 91 to 100 of about 15,774 (268)

Conditions of crystallization of granites and pegmatites of Tarbaganakhsky massif (Kuluarsky ridge, Verkhoyanye)

open access: yesИзвестия высших учебных заведений: Геология и разведка, 2015
Compression during granite crystallization in the anticline arch leads to the formation of fluid- gneiss structures and separation of remanent pegmatite melt with its further moving to the periphery of the complex.
V. A. Utenkov, M. A. Fesenko
doaj   +1 more source

The Composition of Gahnite In Granitic Pegmatites From the Pampean Pegmatite Province, Argentina: Implications For Pegmatite Fractionation

open access: yesThe Canadian Mineralogist, 2015
Gahnite from LCT granitic pegmatites of the Comechingones (Blanca Dora, Juan Roman, Magdalena, La Ona, and Sin Nombre pegmatites) and Conlara (Nancy pegmatite) pegmatite districts, Argentina, was analyzed to investigate the relationship between its chemistry, pegmatite mineralogy, and pegmatite melt evolution.
Heimann, Adriana   +2 more
openaire   +2 more sources

Geological setting, geochemistry and mineralogy of lithium bearing pegmatites in South Western Mali, West Africa; a review

open access: yesGeology, Ecology, and Landscapes
The Bougouni region in southwestern Mali hosts lithium-bearing pegmatites within the Paleoproterozoic Birimian greenstone belt. These pegmatites are classified into lithium-poor and lithium-rich types.
Elhadji Mory Traore   +5 more
doaj   +1 more source

Chemical Evolution of Nb-Ta Oxides and Cassiterite in Phosphorus-Rich Albite-Spodumene Pegmatites in the Kangxiwa–Dahongliutan Pegmatite Field, Western Kunlun Orogen, China

open access: yesMinerals, 2019
The Kangxiwa–Dahongliutan pegmatite field in the Western Kunlun Orogen, China contains numerous granitic pegmatites around a large granitic pluton (the Dahongliutan Granite with an age of ca.
Yonggang Feng   +4 more
semanticscholar   +1 more source

Origin of the Azubai Be-mineralized pegmatites, Xinjiang Altay: constraints from Li–Hf isotopes

open access: yesOpen Geosciences
The genetic mechanism of rare-metal pegmatites – whether they form primarily by extreme fractionation of granitic magmas or direct crustal anatexis – remains highly controversial.
Ma Zhanlong, Hai Lianfu, Zhao Shaoqing
doaj   +1 more source

Geology of the Hugo pegmatite, Keystone, South Dakota [PDF]

open access: bronze, 1962
J.J. Norton   +2 more
openalex   +1 more source

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