TUC Resources Limited (ASX:TUC) Receive Very Positive Mineralogy Results From Stromberg Heavy Rare Earths Prospect
Xenotime is known for its excellent recovery of rare earths, is in high demand from the global rare earths processing industry, and could give the Stromberg project a significant competitive advantage via simple, low cost physical separation methods that could produce a marketable concentrate.
A follow up RC drilling program at Stromberg is planned to commence in the coming weeks. Drilling follows up on recently interpreted drill results including 7m @ 1% Total Rare Earth Oxide from surface (See TUC ASX announcement dated 26 September 2011).
- A xenotime rich concentrate was produced for mineralogical analysis.
- Xenotime mineralogy offers the potential for a simple mineral processing flow sheet, which could assist in the Stromberg Project being able to produce a saleable product/concentrate in lesser time frames than more typical rare earth (REE) project development schedules.
- Importantly, the average grade of the Thorium in the samples was an extremely low 1.25 parts per million (ppm). Thorium is considered a deleterious element in terms of REE concentrate pricing and this result should give more favourable Project metallurgy and economics. This compares favourably to deposits such as Kangankunde which at 11ppm Thorium per 1% TREO (Lynas Corporation (ASX:LYC) website) is one of the lowest contaminant rare earth projects in the world.
- This important result supports TUC's exploration plans at the Stromberg Prospect. A follow up phase of RC drilling (~3000m, for ~50 holes) is planned to test shallow resource potential and target the source of the near surface mineralisation; drilling is expected to commence in late September 2011.
Other Important Facts about Stromberg;
- Initial test work confirms that ninety five per cent of the rare earth content at Stromberg is valuable and high demand Heavy Rare Earth elements (HREE's).
- Drilling assays confirm high proportions of the critical HREE Dysprosium, averaging 7.2% of total rare earth distribution. Yttrium composes 65% of the rare earth distribution.
- The Stromberg mineralisation discovered to date is situated at, or very near surface, in a flat lying tabular body.
- Further shallow exploration potential exists over a highly promising and undrilled +2km prospect strike length.
Mineralogical analysis also showed the association of uranium with the xenotime mineralisation (average grade of samples 632ppm U; previously reported result). At this point, pending further metallurgical test work, TUC is treating the uranium as potentially recoverable product rather than a deleterious element.
Numerous examples of the xenotime mineral were noted in four separate high grade 1m drill samples taken from an RC hole at Stromberg (average grade of samples 1.23% Total Rare Earth Oxide (TREO); previously reported result).
In light of these positive mineralogical findings, TUC plan to proceed with further metallurgical test work to determine possible concentrate grades. A follow up RC drilling program at Stromberg is planned to commence in the coming weeks.
For the complete TUC Resources announcement including figures and tables, please view:
About Spectrum Metals Ltd
Spectrum Metals Limited (ASX:SPX) is a domestic West Australian focused gold exploration and development company, concentrating on high-grade, brown fields assets, that can leverage off existing infrastructure and add value through exploration and development. Spectrum has recently discovered Penny North, one of the highest grade gold discoveries in Australia in recent times. The discovery has grown rapidly and Spectrum has yet to explore approximately 4.5km of prospective strike to find similar high grade lodes.
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Lynas Corporation Limited