RARE EARTHS

EPL 8812

Situated in the hart of Namibian Rare earth deposits. Positioned northerly from Namibia Rare Earths (Pty) Ltd.

learn more

Rare Earth Occurences in Namibia

A brillaint opportunity and a further expansion for Namibia

 Regional Assessment of Rare Earths Potential

The first systematic exploration for rare earths over Lofdal was initiated by Namibia Pty in 2008. In 2011 the Area 4 heavy rare earth deposit was discovered and since that time exploration results have demonstrated the occurrence of rare earth mineralization on a district scale (Figure 2).
Rare earth mineralization at Lofdal is hosted in carbonatite dykes, structural zones and plugs exhibiting grades between 0.2‐3% total rare earths (“TREO” which includes yttrium) and often exhibiting exceptional heavy rare earth enrichment (“HREE”) greater than 50%. Rare earth deposits containing greater than 10% heavy rare earths (“HREO”) can be considered to be enriched in heavy rare earths. The more significant mineralized structures have associated alteration haloes which can carry anomalous concentrations of rare earth elements. The Company uses classification nomenclature which considers heavy rare earths comprising europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu) and yttrium (Y). Light rare earths comprise lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd) and samarium (Sm). “Heavy rare earth enrichment” is the ratio of HREO:TREO, expressed as a percentage.
Mineralization at Area 4 is associated with large scale hydrothermal systems rather than primary magmatic emplacement as discrete dykes. Many of the larger, lower grade “dykes” previously mapped on surface are in fact alteration zones associated with these systems which in some areas significantly increases the strike and width potential of the heavy rare earth exploration target. There are two intrusive carbonatite bodies on the property. The Main Intrusion is an early stage calcitic (“sovite”) body some two kilometers in strike length which does not carry significant amounts of rare earths but has potential for niobium and uranium mineralization. The smaller Emanya plug is some 350 meters in diameter in outcrop and carries anomalous concentrations of rare earths typically in the range of 0.2‐1% TREO but is not enriched in heavy rare earths.
Detailed mineralogical studies have confirmed that the principal heavy rare earth mineral at Lofdal is xenotime. The potential ore mineral assemblage in Area 4 is dominated by xenotime and subordinate zircon ± generally minor amounts of aeschynite, bastnasite group minerals (including synchysite‐Y), thorite, and unidentified phases (Ca‐Y silicate and Th‐Zr silicate). In samples with high thorium (2,000‐4,000 ppm) the potential ore mineral assemblage is dominated by xenotime and thorite. It should be noted that the average thorium content of the Area 4 deposit is only 326 ppm. Grain size and habit are variable with ore minerals being generally fine‐ to very fine‐grained with much of the potential ore minerals averaging 15‐20 microns but locally reaching up to 150 microns.
(Source Namibia Rare earths Inc)