Results 21 to 30 of about 4,120 (208)
Geochemistry, 2019 Allanite-bearing black coastal sands of Kavala (N. Greece) were studied using a combination of single-crystal XRD, EMPA, μ-XRF, bulk ICP-MS, LA-ICP-MS, μ-XANES and γ-ray spectrometry.
I. Tzifas +13 more
semanticscholar +3 more sources
Determination of surface chemistry and flotation properties of rare earth mineral allanite
Minerals Engineering, 2019 In this study, flotation properties of allanite, a sorosilicate rare earth mineral that commonly found in some new complex ore reserves, was studied with EDA (CH3–(CH2)9–O–(CH2)3–NH2/ethylenediamine), a commercial cationic collector in the etheramine ...
I. Kursun, Mert Terzi, Orhan Ozdemir
semanticscholar +2 more sources
Geologica Acta, 2017 Basic to intermediate high-K, high-Mg mantle-derived rocks occur throughout the Iberian Massif and are particularly important in the Tormes Dome, where vaugnerites form several stocks and small plutons. One of the largest and geochemically most variable
F.J. LÓPEZ-MORO +3 more
doaj +2 more sources
Allanite geochronology in the Mount Isa Inlier
Australian Journal of Earth Sciences, 2023 New allanite geochronology is presented for four mineral deposits in the Mount Isa Inlier (SWAN, Mary Kathleen, Koppany and Elaine Dorothy). The data indicate the occurrence of multiple phases of allanite formation: one at 1732 ± 8 Ma at Koppany, one at ...
A. Burnham +3 more
semanticscholar +1 more source
Geological Society of America Bulletin, 2023 Carbonatite hosts the most important rare earth resources in the world, but the precise timing, ore-forming history, and mechanism of rare earth mineralization in carbonatite systems are still in debate.
Hao-Xiang Zhang +5 more
semanticscholar +1 more source
REE MINERALS IN BLACK SHALES OF THE PALEOPROTEROZOIC MIKHAILOVKA FORMATION (BAIKAL-PATOM HIGHLAND, SIBERIA) [PDF]
Минералогия, 2022 The paper characterizes REE mineralization from carbonaceous metapelites of the Paleoproterozoic Mikhailovka Formation, which is the most ancient gold-bearing horizon of the Lena province (Bodaibo district, Irkutsk region). The conditions of metamorphism
E.E. Palenova +3 more
doaj +1 more source
Compositional variation and zoning of epidote supergroup minerals in the Campi Flegrei geothermal field, Naples, Italy [PDF]
European Journal of Mineralogy, 2023 Authigenic epidote supergroups are an abundant accessory mineral in the calcium–aluminum silicate and thermometamorphic hydrothermal zones of the Campi Flegrei (Phlegraean Fields) geothermal field located west of Naples, Italy. Geothermal exploration for
H. E. Belkin, B. De Vivo, B. De Vivo
doaj +1 more source
Yankuang ceshi, 2021 BACKGROUND The Huayangchua polymetallic deposit is a super-large mineral deposit that has economic endowments of uranium and rare earth resources. The deposit is characterized by the unique ore types and complex mineral assemblage.
WAN Jian-jun +9 more
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MINERALOGY OF HOST ROCKS OF THE OSINOVSKOE GOLD-QUARTZ DEPOSIT (CENTRAL URALS) [PDF]
Минералогия, 2023 The paper describes the mineralogy of mica shales of the Osinovskoe gold deposit in the Central Urals. Our studies unraveled the role of dynamometamorphism in the transformation of primary rocks and allowed the characterization of their metasomatic ...
N.P. Safina, L.Ya. Kabanova, I.A. Blinov
doaj +1 more source
Geologica Carpathica, 2022 : The geochemical behaviour of major, rare, and trace elements in members of epidote-group minerals formed at different stages of magmatic and hydrothermal activity in pegmatites from the Madan ore district was studied.
Sylvina Georgieva +3 more
semanticscholar +1 more source