Results 191 to 200 of about 5,118,389 (220)

Precise electron microprobe age determination in altered uraninite: consequences on the intrusion age and the metallogenic significance of the Kirchberg granite (Erzgebirge, Germany)

Contributions to Mineralogy and Petrology, 2003
An integral method of data evaluation for chemical dating of accessory uraninite by electron microprobe analysis and electron microscopy is proposed. The internal structure of uraninite grains, the contents of Si, Ca, and Fe, and tests for loss or gain of Pb and U are suitable criteria to decide whether or not a given crystal area was affected by ...
openaire   +1 more source

Age of the Au-Ag mineralization and its relation to the magmatism at the Dess occurrence, North Stanovaya metallogenic zone (southeastern framing of the North-Asian Craton)

Russian Journal of Pacific Geology, 2012
Mesozoic ore systems were responsible for the formation of numerous Au, Ag, Mo, and Pb occurrences and deposits in the North-Stanovaya metallogenic zone, the largest of which are the Bamskoe, Vykhodnoe, Mogotinskoe, Dess, Nakhodka, and Apsakan deposits. The age of the hydrothermal-metasomatic processes that accompanied the mineralization is 130–122 Ma,
I. V. Buchko, A. A. Sorokin, V. A. Ponomarchuk, A. V. Travin, Ir. V. Buchko   +4 more
openaire   +1 more source

Structure and Age of the Fluorite-Beryl Raduga Deposit (West Sayan Mountains): Problem of Evaluation of the Metallogenic Potential of the Region

Doklady Earth Sciences, 2019
The geochronological and geochemical parameters of the Raduga muscovite–fluorite–euclase–beryl deposit, located within the Kizir–Kazyr zone of rare-metal magmatism, were determined. In contrast to other deposits and ore occurrences located in this zone and represented by alkaline granites enriched in rare-metal mineralization, the formation of the ...
D. A. Lykhin, V. V. Yarmolyuk, A. A. Vorontsov, A. V. Travin   +3 more
openaire   +1 more source

The Metallogenic Age of the Changshanhao Gold Deposit in Inner Mongolia, China

Acta Geologica Sinica - English Edition, 2014
Yi CAO, Fengjun NIE, Wei XIAO
openaire   +1 more source

Basic characteristics, research progresses and prospects of Sn-Ag-base metal metallogenic system

Acta Petrologica Sinica, 2019
LI ZhenZhen, QIN KeZhang, ZHAO JunXing, LI GuangMing, SU ShiQiang   +4 more
openaire   +1 more source

The Age of Gold Mineralization in the Yana–Kolyma Metallogenic Belt, Northeastern Russia: First Data of Re–Os Isotope Geochronology of Native Gold

Russian Journal of Pacific Geology, 2021
M V Kudrin, V Yu Fridovsky, B V Belyatsky   +2 more
exaly  

Metallogenic age and geological significance of the Jiazishan Mo deposit, Inner Mongolia, China

Australian Journal of Earth Sciences
Z. L. Wang, J. Z. Yang, K. Q. Zhao, Y. G. Fu, J. W. Gao, Y. M. Deng, L. J. Lin, Z. Duan   +7 more
openaire   +1 more source

Multiple isotopic dating constrains the time framework (Age) of a porphyry system: A case study from the Sangri Cu-Mo deposit, Bangongco-Nujiang metallogenic belt, Tibet, China

Ore Geology Reviews, 2022
Faqiao Li
exaly  

Tungsten and tin deposits in South China: Temporal and spatial distribution, metallogenic models and prospecting directions

Ore Geology Reviews, 2023
Ming-Sen Fan, Zhi-Lin Cheng, Jian-Ming Cui   +2 more
exaly  

Research advance in geochronology of the Mississippi Valley-type Pb-Zn deposits: Debate on the metallogenic age of the Jinding deposit

Acta Petrologica Sinica, 2022
WANG ChangMing, DUAN HongYu, LI Chao, ZHU JiaXuan, SHI KangXing, CHEN Qi, LIU LiJun, QIAN JinLong   +7 more
openaire   +1 more source