NOTICE: Resent Drilling Results are NOT included in PEA The share price is decreasing probably due to people have missunderstood that results of the recent 2021 diamond drillings are included, but they are NOT!
''During 2021, in anticipation of a positive PEA outcome, Defense Metals completed a 29-hole 5,349 metre resource expansion and delineation diamond drill program at Wicheeda. The results of drilling are expected during Q1 2022 and as such have not been incorporated into the PEA.''
Mineral Resource Estimate
- The updated Wicheeda Mineral Resource Estimate (MRE) comprises a 5.0 million tonne Indicated Mineral Resource, averaging 2.95% TREO and a 29.5 million tonne Inferred Mineral Resource, averaging 1.83% TREO, reported at a cut-off grade of 0.5% TREO within a conceptual Lerchs-Grossman (LG) pit shell. The current resource represents a 36% increase on a contained metal basis in comparison to the prior 2020 MRE due to the estimation of additional economically significant medium and heavy REE's and a lower cut-off grade established based on consideration of TREO and concentrate payable, metallurgical recovery, and operating cost assumptions.
Exploration Upside
- During 2021, in anticipation of a positive PEA outcome, Defense Metals completed a 29-hole 5,349 metre resource expansion and delineation diamond drill program at Wicheeda. The results of drilling are expected during Q1 2022 and as such have not been incorporated into the PEA. The drilling is expected to support ongoing advanced economic studies through the development of an updated geological model and mineral resource estimate.
Updated Mineral Resource
The Wicheeda deposit is modelled as a southeast-trending, north to northeast dipping composite layered syenite-carbonatite sill complex having dimensions of approximately 400 m north-south by 100-250 m east-west. The mineralization is interpreted as a moderately north-northeast dipping, shallowly north plunging, layered sill complex having low REE grade syenite at its base, overlain by transitional intermediate REE grade hybrid xenolithic-carbonatite (fenite), and finally relatively higher REE grade dolomite-carbonatite rocks, which form the main mineralization of the Wicheeda REE deposit outcropping at surface
The updated MRE comprises a 5.0 million tonnes Indicated Mineral Resource, averaging 2.95% TREO (Total Rare Earth Oxide: CeO2, La2O3, Nd2O3, Pr6O11, Sm2O3, Eu2O3, Gd2O3, Tb4O7, Dy2O3 and Ho2O3), and a 29.5 million tonnes Inferred Mineral Resource, averaging 1.83% TREO, reported at a cut-off grade of 0.5% TREO within a conceptual Lerchs-Grossman (LG) pit shell and is provided in Table 2.
The lower cut-off grade was established based on consideration of TREO and concentrate payable, metallurgical recovery, and operating cost assumptions.
The MRE is predominately based on an unchanged geological model and methodologies utilized to calculate the 2020 MRE. Differences relate to the incorporation of pulp REE multi-element fusion inductively coupled plasma mass spectrometry (ICP-MS), re-assay of the 2008 and 2009 drillholes, reducing the uncertainty regarding the historical incomplete X-ray fluorescence analytical results, updated estimation parameters, and a 2020 LiDAR survey. The increased resolution of the LiDAR allows for more robust mine planning, particularly when considering the high relief within the Project area.
https://stockhouse.com/news/press-releases/2021/11/24/defense-metals-announces-positive-preliminary-economic-assessment-for-the