Zeku County Longquna-Donggerina Gold Deposit Geologic Feature and Metallogenic Regularities

2012 ◽  
Vol 524-527 ◽  
pp. 101-105
Author(s):  
Huang Jing ◽  
Zi Rong Yang ◽  
De Qing Zhang
Keyword(s):  
Low Temperature ◽  
Gold Deposit ◽  
Mining Area ◽  
Heavy Mineral ◽  
Magmatic Activity ◽  
Geological Data ◽  
Vein Deposit ◽  
Qinghai Province ◽  
Degree Of Mineralization ◽  
Geological Setting

Longquna-Donggerina gold deposit of Kuze county in Qinghai province that has development value in the Langqin area in recent years,which is prospecting achievements by the sustained regional heavy mineral anomaly. By analysis on metallogenic geological setting and regional heavy mineral anomaly feature, combined with the ditailed mining area geological data , gold deposit occurs mainly sandstone and slate, and the degree of mineralization has positive correlation with magmatic activity and tectonization. Lonquna-Donggerina gold deposit had been preliminary identified that belongs to the low temperature hydrothermal fissure filling type vein deposit.

Geological setting and mineralization characteristics of the Tick Hill Gold Deposit, Mount Isa Inlier, Queensland, Australia

2021 ◽  
pp. 104288
Author(s):  
Truong X. Le ◽  
Paul H.G.M. Dirks ◽  
Ioan V. Sanislav ◽  
Jan M. Huizenga ◽  
Helen A. Cocker ◽  
...  
Keyword(s):  
Gold Deposit ◽  
Mount Isa ◽  
Geological Setting

Gold remobilization by low-temperature brines; evidence from the Curraghinalt gold deposit, Northern Ireland

1999 ◽  
Vol 94 (2) ◽  
pp. 289-296 ◽  
Author(s):  
J. J. Wilkinson ◽  
A. J. Boyce ◽  
G. Earls ◽  
A. E. Fallick
Keyword(s):  
Northern Ireland ◽  
Low Temperature ◽  
Gold Deposit

The Mineral Characteristics and Occurrence of Gold in Nali Gold Deposit, Guangxi

2014 ◽  
Vol 936 ◽  
pp. 2383-2388
Author(s):  
Zhi Wen Li ◽  
Cheng Dong Liu ◽  
Xuan Qing Zhao ◽  
Jian Hui Lu ◽  
Guo Lin Guo
Keyword(s):  
Gold Deposit ◽  
Mineral Composition ◽  
Electron Probe ◽  
Mining Area ◽  
Optical Microscope ◽  
Analysis Techniques ◽  
Mineral Characteristics ◽  
Ore Minerals

Using the analysis techniques of polarizing optical microscope and electron probe, mineral composition, ore texture and structure and the occurrence of Au in the primary ore are studied. The research shows that the main ore minerals in the ore include realgar, pyrite and arsenopyrite etc. Sulfur-stibarsen is the main carrier of Au, and is the major associated mineral of realgar, surrounded mainly by realgar, and partly is the associated mineral of arsenopyrite. The existence of visible gold and microscopic gold in the ore of this mining area can be excluded, and the gold might exist mainly in the form of inclusion gold, which is the so-called “nanoAu”.

scholarly journals The application of digital logging in exploration of Jiang Cang coalfield in Qinghai province

2016 ◽  
Vol 1 (1) ◽  
pp. 44
Author(s):  
Liu Zhiyou ◽  
Huo Jinghuan ◽  
Zhu Xiaogang
Keyword(s):  
Mining Area ◽  
Well Logging ◽  
Sampling Interval ◽  
Acoustic Logging ◽  
Qinghai Province ◽  
Past Work ◽  
The Past ◽  
The Future ◽  
Resistivity Logging ◽  
Single Emission

A lot of well logging on to Jiang Cang coalfield in the past work and achieved good results, but due to differ in age, instrumentation equipment and method were different. In order to understand the application effect of the equipment used in the area now and in order to provide the basis for the future working to choose the appropriate logging parameters and well logging interpretation, we chosed GJS - 1 b intelligent engineering logging system produced by Chongqing geological instrument factory in Jiang Cang mining area, we collected the data when cable were ascending, according to 《the requirements of the rules of coalfield geophysical logging》, JGS - 1 b instrument full hole resistivity logging velocity of 3 m/s, the sampling interval was 5 cm, acoustic logging measurement parameter for the acoustic time, adopt the device of single-emission and double-receiving, detectorsource space was 0.5 meters, 0.7 meters, the full hole velocity was 6 m/s, the sampling interval was 10 cm.In this paper, we introduce the application of multiple well logging method in coalfield geology through to the logging examples in Mu Li Jang Cang coalfield four field  of qinghai province, the effect was remarkable

scholarly journals Aborted propagation of the Ethiopian rift caused by linkage with the Kenyan rift

2020 ◽  
Author(s):  
G Corti ◽  
R Cioni ◽  
Z Franceschini ◽  
F Sani ◽  
S Scaillet ◽  
...  
Keyword(s):  
Rift Zone ◽  
Numerical Models ◽  
Ethiopian Rift ◽  
Magmatic Activity ◽  
Geological Data ◽  
East African ◽  
Ridge Segmentation ◽  
Pure Extension ◽  
African Rift ◽  
Ocean Ridge

© 2019, The Author(s). Continental rift systems form by propagation of isolated rift segments that interact, and eventually evolve into continuous zones of deformation. This process impacts many aspects of rifting including rift morphology at breakup, and eventual ocean-ridge segmentation. Yet, rift segment growth and interaction remain enigmatic. Here we present geological data from the poorly documented Ririba rift (South Ethiopia) that reveals how two major sectors of the East African rift, the Kenyan and Ethiopian rifts, interact. We show that the Ririba rift formed from the southward propagation of the Ethiopian rift during the Pliocene but this propagation was short-lived and aborted close to the Pliocene-Pleistocene boundary. Seismicity data support the abandonment of laterally offset, overlapping tips of the Ethiopian and Kenyan rifts. Integration with new numerical models indicates that rift abandonment resulted from progressive focusing of the tectonic and magmatic activity into an oblique, throughgoing rift zone of near pure extension directly connecting the rift sectors.

scholarly journals Late Ordovician volcanism of the northern part of Altai-Sayan area and its geodynamic nature

2019 ◽  
Vol 485 (4) ◽  
pp. 457-463
Author(s):  
A. A. Vorontsov ◽  
O. Yu. Perfilova ◽  
N. N. Kruk ◽  
A. S. Tarasyuk
Keyword(s):  
Mantle Plume ◽  
Lithospheric Mantle ◽  
Volcanic Rocks ◽  
Late Ordovician ◽  
Magmatic Activity ◽  
Geological Data ◽  
Tio2 Content ◽  
Evolution Stage ◽  
Geochemical Studies ◽  
Ree Pattern

The results of geological-geochemical studies of some Late Ordovician associations in the frame of the Minusinsk Trough with available geological and U-Pb, Rb-Sr, and K-Ar age dates are presented. The Late Ordovician volcanic rocks form a continuous igneous series, the basalts of which are different from Devonian basalts of the Minusinsk Trough in the lower TiO2 content (≥1.7 wt %) and more fractionated REE pattern. These features should be considered the index characteristics of Late Ordovician rocks. Their compositions reflect processes of fractionation crystallization and mixing of trachibasaltic magmas with crustal melts. When taking into account the regional geological data, it is shown that magmatic activity at the Late Ordovician endogenic evolution stage in the northern part of the Altai-Sayan fold area was caused by the interaction of a mantle plume and the lithospheric mantle, which was metasomatically reworked and enriched in water during former subduction processes.

Source of Ore-Forming Materials and Mineralization of the Saidu Gold Deposit, Southern Altai, China

2014 ◽  
Vol 962-965 ◽  
pp. 75-78
Author(s):  
Guo Rui Zhang ◽  
Jiu Hua Xu ◽  
Hao Wei
Keyword(s):  
Gold Deposit ◽  
Lead Isotope ◽  
Gold Mineralization ◽  
Magmatic Activity ◽  
Ductile Shear Zone ◽  
The West ◽  
Orogenic Gold Deposit ◽  
Close Relationship ◽  
Isotope Studies ◽  
Back Arc

Saidu gold deposit, located in back arc basin at south margin of the west Altay Mountain, is orogenic gold deposit. It is strictively controlled by ductile-shear zone, occurring in altered mylonite zone of Mar-kakol giant belt. The δ34S values of pyrite in the gold deposit range from 3.53‰ to 5.88‰; the lead isotopic compositions are fairly constant, with 206Pb/204Pb ranging from 18.010 to 18.359, 207Pb/204Pb ranging from 15.488 to 15.579, and 208Pb/204Pb ranging from 38.1116 to 38.3551. Sulfur and lead isotope studies indicated that ore-forming materials originated from the deep portion, and had close relationship with magmatic activity. The ore materials were obtained from rocks of the lower crust during the orogenic period; the main gold mineralization should have relations with tectonic extention settings of post-collision orogenic.

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