Results 1 to 10 of about 108 (92)

Amazonite in Pakistan: A Comprehensive Study with XRD, XPS, SEM, and PL Analyses

Cumhuriyet Science Journal, 2023
Although amazonite minerals from various locations have been studied before rather less attention has been paid to the amazonite mineral from Pakistan. The present work is presented an extensive structural characterization of natural amazonite aliquots ...
Eren Cihan Karsu Asal
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MORPHOLOGICAL NOTES ABOUT AMAZONITE [PDF]

Минералогия, 2018
Morphological features of amazonite cause some onthogenic models of K-feldspars. The crystals of amazonite are zonal and sectorial. «Microcline lattice» of stresses in K-feldspar is formed after its growth during polymorphic transformation of monoclinic ...
V.A. Popov
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The evolution of the Čanište epidote-bearing pegmatite, Republic of Macedonia: evidence from mineralogical and geochemical features

Geologia Croatica, 2012
The epidote-bearing Čanište pegmatite and adjacent Upper Carboniferous granodiorites cut Precambrian gneises, at the western slopes of the Selečka Mts., the Eastern Pelagonian zone, FYRO Macedonia.
Sabina Strmić Palinkaš, Vladimir Bermanec, Ladislav A. Palinkaš, Blažo Boev, Robert A. Gault, Walter Prochaska, Ronald J. Bakker   +6 more
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Microtextural, spectroscopic, and chemical characterization of amazonite from the Serra Branca Pegmatite, Northeastern Brazil

Brazilian Journal of Geology, 2022
The Serra Branca pegmatite in northeastern Brazil is unique because of its megacrysts of bluish-green amazonite currently exploited for ornamental purposes and as high-quality gemstones.
Glenda Lira Santos, Sandra de Brito Barreto, Igor Manoel Belo de Albuquerque e Souza, José Ferreira de Araújo Neto, Luis Sanchéz-Muñoz, Lauro Cézar Montefalco de Lira Santos   +5 more
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Petrogenesis and tectonic significance of Late Permian-Middle Triassic granitoids in Guobaoshan, eastern section of the eastern Tianshan mountains: Constraints from geochronology and geochemistry

Dizhi lixue xuebao, 2022
The eastern Tianshan-Beishan area is one of the important metallogenic belts in China, but the Late Permian-Middle Triassic tectonic evolution still remains a controversial issue.
HE Xinyu, FANG Tonghui, BO Hetian, LIU Haipeng, ZHANG Zhongyi, XIAO Wenjin   +5 more
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Zircon Genesis and Geochronology for the Zhangbaoshan Super-Large Rubidium Deposit in the Eastern Tianshan, NW China: Implication to Magmatic-Hydrothermal Evolution and Mineralization Processes

Frontiers in Earth Science, 2021
The Zhangbaoshan (ZBS) super-large Rubidium deposit, located in the Eastern Tianshan, is a typical granite-type Rb deposit. The ZBS deposit is mainly hosted in the highly evolved Baishitouquan (BST) pluton enriched in F and Rb, which exhibits five ...
Jun Zhi, Ruxiong Lei, Boyang Chen, M. N. Muhtar, Zhijie Feng, Kai Zhang, Yuanfeng Cai, Changzhi Wu, Changzhi Wu   +8 more
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Whole-rock and mineral chemistry characterization of contrasting granitoids, constraints on the source of the Vieirópolis NYF-type pegmatites, Northeastern Brazil

Brazilian Journal of Geology, 2020
The Vieirópolis pegmatite field is characterized by amazonite pegmatites inserted in the Borborema Province. The Serra Branca pegmatite is hosted by the Serra Branca granites, which intruded partially the Serra Negra granites, and stands out by its ...
Igor Manoel Belo de Albuquerque e Souza, Ignez de Pinho Guimarães, Sandra de Brito Barreto, Glenda Lira Santos, José Ferreira de Araújo Neto   +4 more
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Characterization and discrimination of some gem silicate minerals adopting LIBS, FTIR, and Raman spectroscopic techniques

AIP Advances, 2023
In this paper, characterization and discrimination of some silicate gems (gemstones and low-gem quality varieties) from ancient Egyptian mines have been performed for the first time adopting molecular and elemental spectroscopic techniques.
Amal Abdelfattah Khedr, Adel A. Surour, Ahmed El-Hussein, Mahmoud Abdelhamid   +3 more
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40Ar-39Ar Dating of Muscovite from the Zhaojinggou Nb-Ta Polymetallic Deposit in Wuchuan County of Inner Mongolia and Its Geological Implications

Yankuang ceshi, 2017
The Zhaojinggou Nb-Ta polymetallic deposit in Inner Mongolia is a newly discovered large rare metal ore deposit. The reserve of Nb-Ta oxides is more than 8200 tons.
GAO Yun, SUN Yan, ZHAO Zhi, LI Jian-kang, HE Han-han, YANG Yue-qing   +5 more
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CHARACTERISTICS OF THE UNIQUE Y-HREE-F-RICH PEGMATITE SYSTEM REVEALED BY ZIRCON GEOCHEMISTRY: A CASE STUDY FROM MT. PLOSKAYA AMAZONITE DEPOSIT, KOLA PENINSULA [PDF]

Минералогия
An amazonite-quartz-albite pegmatite body of the Mt. Ploskaya intrudes a metavolcanic complex of the Keivy Terrane (Kola Peninsula) and is unique in its diversity and an assemblage of ore and accessory Y-Yb-Ta-Nb-Be-Pb-F mineralization.
D.R. Zozulya, S.G. Skublov, E.V. Levashova, L.M. Lyalina   +3 more
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