Petrology and Geochemistry of Acid Dyke Rocks with Reference to their Bearing on Rare Metal and Rare Earth Mineralisation: Studies from Malani Igneous Suite, Northern Peninsular India

2011 ◽  
pp. 277-282 ◽  
Author(s):  
G. Vallinayagam
Keyword(s):  
Rare Earth ◽  
Rare Metal ◽  
Peninsular India ◽  
Malani Igneous Suite ◽  
Petrology And Geochemistry

scholarly journals Petrology and Geochemistry of Nakora Ring Complex with Emphasis on Tectonics and Magmatism, Neoproterozoic Malani Igneous Suite, Western Rajasthan, India

2021 ◽  
Author(s):  
Naresh Kumar ◽  
Radhika Sharma
Keyword(s):  
High Field ◽  
Crustal Contamination ◽  
Present Contribution ◽  
Peninsular India ◽  
Plagioclase Feldspar ◽  
Malani Igneous Suite ◽  
Ring Complex ◽  
Petrology And Geochemistry ◽  
High Silica ◽  
Neoproterozoic Magmatism

The present contribution reports on the field, petrographical and geochemical observations of the volcano-plutonic rocks of the Nakora Ring Complex (NRC) from the Neoproterozoic, Malani Igneous Suite (MIS) (Northwestern Peninsular India) and confers about their magmatic evolution and tectonic implications. Three magmatic phases are notable in the NRC which is Extrusive, Intrusive and Dyke phase where with small quantities of basaltic flows was initiated and accompanied by extensive/voluminous acidic flows. Petrographically, rhyolite shows flow bands, porphyritic, spherulitic, aphyritic and perlitic textures whereas basalt flows are distinguished by the presence of labradorite in lath-shaped crystals (plagioclase feldspar) and clinopyroxene (augite). The presence of high silica and total alkalis in NRC rocks, as well as high field strength elements (HFSE), enrichment of trace elements and negative anomalies of Sr., Eu, P, and Ti indicates that the emplacement of the lava flows was controlled by complex magmatic processes such as fractional crystallization, crustal contamination and partial melting. The association of basalt-trachyte-rhyolite means that the magma chamber was supplied a significant amount of heat to the crust before the eruption. Moreover, a volcanic vent was also reported at NRC where rhyolite was associated with agglomerate, volcanic breccia, perlite and tuff. The current research proposed that the Neoproterozoic magmatism at NRC was controlled by rift-related mechanism and produced from crustal source where the heat was supplied by mantle plume.

A Review on Petrology and Geochemistry of the Neoproterozoic Malani Igneous Suite and Related Rocks (Northwestern Peninsular India)

Petrology ◽  
2020 ◽  
Vol 28 (6) ◽  
pp. 591-657
Author(s):  
Naveen Kumar ◽  
Radhika Sharma ◽  
Naresh Kumar ◽  
A. Krishnakanta Singh
Keyword(s):  
Peninsular India ◽  
Malani Igneous Suite ◽  
Petrology And Geochemistry

scholarly journals The New Renewable Energy Consumption Policy of Rare Earth Metals to Build Indonesia's National Energy Security

2018 ◽  
Vol 68 ◽  
pp. 03008
Author(s):  
Muhamad Azhar ◽  
Solechan Solechan ◽  
Retno Saraswati ◽  
Putut Suharso ◽  
Suhartoyo Suhartoyo ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Rare Earth ◽  
Energy Security ◽  
Rare Earth Metals ◽  
Rare Metal ◽  
Energy Regulation ◽  
Legal Research ◽  
Renewable Energy Consumption ◽  
New Energy ◽  
National Energy Security

This study aims to discuss the policy of using renewable energy in the form of rare metal eart as an effort to build national energy security. The research method used a legal research looking from various perspectives in social science. Law is seen as a space for the process of scientific study in order to seek truth. The use of relevant legal research wants to understand the law more thoroughly. In performing implementation analysis, using the method of Regulatory Impact Assessment (RIA) with focus on energy regulation. The results of the study show that: First, the policy of the Indonesian republic government regarding the use of new energy and renewable energy aims to prepare the carrying capacity of national energy security. This policy has not fully gone well. The policy is not supported by consistency in issuing derivative policies. Second, the use of new energy and renewable energy, especially rare earth metals as part of efforts to encourage national energy security in Indonesia is still very far from expectations. The use of rare eart metal is only around 0.7% of the use of new energy. Efforts to explore and exploit rare earth metals have not been carried out in a timely manner. Whereas the potential of rare earth metals is a strategic community and has the potential to encourage national energy security in Indonesia. Indonesia is projected to produce rare earth metals reaching 20% of the world's supply.

scholarly journals Preparation of a Novel Polystyrene-Poly(hydroxamic Acid) Copolymer and Its Adsorption Properties for Rare Earth Metal Ions

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1905 ◽  
Author(s):  
Xiaoyan Cao ◽  
Qing Wang ◽  
Shuai Wang ◽  
Ruilin Man
Keyword(s):  
Rare Earth ◽  
Metal Ions ◽  
Surface Area ◽  
Hydroxamic Acid ◽  
Earth Metal ◽  
Rare Metal ◽  
Rare Earth Ions ◽  
Area Measurement ◽  
Bet Surface Area ◽  
Acid Copolymer

In this study, a novel polystyrene-poly(hydroxamic acid) copolymer was synthesized as an effective adsorbent for the treatment of rare earth elements. Through the use of elemental analysis as well as FTIR, SEM, XPS, and Brunauer-Emmett-Teller (BET) surface area measurement, the synthesized polymer was found to have a specific surface area of 111.4 m2·g−1. The adsorption performances of rare metal ions were investigated under different pH levels, contact times, initial concentrations of rare earth ions, and temperatures. The adsorption equilibrium for La3+, Ce3+, and Y3+ onto a polystyrene-poly(hydroxamic acid) copolymer is described by the Langmuir model, which confirms the applicability of monolayer coverage of rare earth ions onto a polystyrene-poly(hydroxamic acid) copolymer. The amount of adsorption capacities for La3+, Ce3+, and Y3+ reached 1.27, 1.53, and 1.83 mmol·g−1 within four hours, respectively. The adsorption process was controlled by liquid film diffusion, particle diffusion, and chemical reaction simultaneously. The thermodynamic parameters, including the change of Gibbs free energy (∆G), the change of enthalpy (∆H), and the change of entropy (∆S), were determined. The results indicate that the adsorption of resins for La3+, Ce3+ and Y3+ was spontaneous and endothermic. The polymer was also used as a recyclable adsorbent by the desorption experiment.

On the issue of loparite ore as a source of rare-metal and rare-earth elements and increasing its dressing efficiency

2017 ◽  
pp. 8-14
Author(s):  
S. A. Alekseeva ◽  
◽  
E. D. Rukhlenko ◽  
S. V. Tereshchenko ◽  
D. N. Pavlishina ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Rare Metal
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