bastnaesite


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bastnaesite

[′bast·nə‚sīt]
(mineralogy)
(Ce,La)CO3(F,OH) A greasy yellow to reddish-brown fluorocarbonate rare-earth metal mineral; source of rare earths, for example, cerium and lanthanum.
References in periodicals archive ?
The weathered Bastnaesite Zone is now a high confidence, well defined Mineral Resource with 86% in the highest 'Measured' JORC category
Test work was successfully completed to develop and demonstrate a simple metallurgical process for Ngualla's weathered bastnaesite mineralisation.
Fundamental geological aspects of the central Bastnaesite Zone targeted for first production offer distinct advantages for development over other rare earth projects.
The weathered Bastnaesite Zone can support a mine life of over 50 years at a 10,000tpa REO production level.
The revised Scoping Study and economic assessment completed during the quarter incorporated the new Mineral Resource, which supports a mine life of over 50 years from the Bastnaesite Zone alone, at a grade of 5.35% REO for the first 25 years.
- Extended mine life from 25 years to in excess of 50 years from the weathered Bastnaesite Zone
At a 3.0% lower grade cut the Mineral Resource for the Bastnaesite Zone weathered mineralisation targeted for initial development is: 21.6 million tonnes at 4.54% REO*, for 982,000 tonnes of contained REO#.
The infill drilling was completed to increase the amount of weathered mineralisation in the Bastnaesite Zone classified as 'Measured' or 'Indicated' Mineral Resource and provide the definition required for a detailed mine plan and schedule for the project to support the Pre-Feasibility Study now in progress.
- Junmei Zhao, on behalf of her colleague, Deqian Li, of the Changchun Institute of Applied Chemistry in China, detailed a method for the extraction of cerium from bastnaesite, one of the many rare earth bearing minerals found in the Nechalacho ore, using reagents developed by Cytec Canada.
The results to date have indicated that the light rare earths (LREE) in the Nechalacho deposit are contained in four minerals: allanite, monazite, bastnaesite and synchisite, and the heavy rare earths (HREE) are present in two minerals: fergusonite and zircon, the latter also being host to zirconium (Zr).
In addition to the expected significant intercepts Basal Zone, many of the holes drilled in the North Tardiff Lake area intersected interesting TREO values in the Upper Zone in association with zones of semi-massive bastnaesite mineralization.
The gemstones displayed in the exhibition included Emeralds, Rubies, Peridots, Aquamarines, Topaz, Tourmalines, Corundum, Quartz, Garnets, Bastnaesites, Xenotimes, Sphenes, Amethysts, and Zircons etc.