Results 141 to 150 of about 138,394 (310)

Recuperación de sílice residual de columnas de cromatografía en la síntesis sol-gel de pigmentos

Boletín de la Sociedad Española de Cerámica y Vidrio, 2000
The use of a silica waste of support chromatography process as raw material in the synthesis of ceramic pigments based in zircon network (yellow of praseodymium, turkish blue of vanadium and pink koral of iron), is analized in this study.
Grañana, M. C., Vicent, J. B., Llusar, M., Tena, M. A., Monrós, G.   +4 more
doaj  

Ages on weathered Plio-Pleistocene tephra sequences, western North Island, New Zealand [PDF]

, 2001
Using the zircon fission-track method, we have obtained five ages on members of two strongly-weathered silicic, Pliocene-Pleistocene tephra sequences, the Kauroa and Hamilton Ash formations, in western North Island, New Zealand.
Briggs, Roger M., Horrocks, Joanna L., Kamp, Peter J.J., Liddell, Ivan J., Lowe, David J., Tippett, J. Mark   +5 more
core   +1 more source

BADDELEYITE MINERALIZATION OF ULTRAMAFIC ROCKS FROM THE MAIN URALS COLLISIONAL SUTURE (UFALEY METAMORPHIC BLOCK, CENTRAL URALS) [PDF]

Минералогия, 2016
Baddeleyite from ultramafic rocks of the Kurta eclogite-schist megamélange (Ufaley metamorphic block, Central Urals) is studied. The zirconium mineralization is established in Ni-bearing forsterite and magnetite-forsterite rocks, which were replaced by ...
A.I. Belkovsky, A.R. Nesterov
doaj  

Mineralogical and geochemical characteristics of rare earth mineralisation in the Middle Dnipro region (on the example of the Kotlyarivka ore occurence)

Мінеральні ресурси України
The article presents a mineralogical, petrographic, and geochemical characterization of the rare earth mineralization of the Kotlyarivka ore occurrence, which was discovered by drill hole 114 in the south-western part of the Krynychky plagiogranite ...
V. V. Sukach, L. V. Isakov, Yu. Ye. Khomych   +2 more
doaj   +1 more source

Formation Age and its Geological Significance of Quartz Diorite from Cryptoexplosive Breccia in Dalucao Rare Earth Mine, Sichuan Province

Kuangchan zonghe liyong
To limit the diagenetic age of quartz diorite in the crypto-explosion breccia of the Dechang Dalucao in Sichuan Province, LA-ICP-MS zircon U-Pb chronology was carried out.
Wei YANG, Xiaohong XIA, Tuqiang LIU, Long CHENG, Zhiyuan XIE, Shangrong LIU, Hongqi TAN   +6 more
doaj   +1 more source

The Composition of Zircon and Igneous and Metamorphic Petrogenesis

, 2003
P. Hoskin, U. Schaltegger
semanticscholar   +1 more source

Simultaneous Determination of U-Pb Age and Trace Elements of Zircon by Laser Ablation Sector Field Inductively Coupled Plasma-Mass Spectrometry

Yankuang ceshi
Laser ablation sector field inductively coupled plasma-mass spectrometry (LA-SF-ICP-MS) is widely applied in U-Pb dating of zircon due to its remarkable sensitivity.
Linghao ZHAO, Dongyang SUN, Mingyue HU, Jihai YUAN, Chenzi FAN, Xiuchun ZHAN   +5 more
doaj   +1 more source

U-Pb geochronology of the El Jadida rhyolite and relation to possible Lower Cambrian recycling (Coastal block, Moroccan Meseta). [PDF]

, 2018
The El Jadida (Mazagan) dome, whose existence was reported as early as 1934 by Yovanovitch and Freys, constitutes one of the first outcrops of the Moroccan Meseta where the Precambrian (PIII?)-Paleozoic (Lower Cambrian?) boundary was established (Gigout,
El Attari, A., El Houicha, M., Ezzouhairi, H., Fekkak, A,, Gama, C., Jouhari, A., Nasser, N., Pereira, M.F., Silva, J.B.   +8 more
core  

Trace elements and melt inclusion in zircon within the Qunji porphyry Cu deposit: Application to the metallogenic potential of the reduced magma-hydrothermal system

Open Geosciences
The Qunji porphyry copper (Cu) deposit, located within the Awulale metallogenic belt (AMB) in the western Tianshan orogenic belt, exhibits distinct geochemical and mineralogical characteristics that have not been fully understood.
Zhang Zizhen, Gao Zhengxi, Zuo Yushan, Zuo Lei, Liu Rui   +4 more
doaj   +1 more source

U-Pb age and Hf-Nd-Sr-Cu-S isotope systematics of the Binyuda and Dyumtaley ore-bearing intrusions (Taimyr, Russia)

Литосфера, 2016
We present for the first time U-Pb age data and Hf-Nd-Sr-Cu-S isotope signatures for lithologies and associated sulphide ores from the Binyuda and Dyumtaley ultramafic-mafic intrusions located in the limits of the Taimyr Peninsula (Russian Arctic ...
K. N. Malitch, I. Yu. Badanina, A. P. Romanov, S. F. Sluzhenikin   +3 more
doaj