Post by
Wangotango67 on Mar 12, 2024 11:57pm
MR GROOVY
If you're truly interedted in validating Wellgreen hosts
2 kinds of nickels - simply review 2012 MET tests. ( pdf report )
Nickel Sulphide
Other Nickel
Pages 8 - 10 ( assay charts - 2 forms of nickel = total nickel )
It is important to note from the Ni and NiS assays;
the Ni assay represents the total amount of Ni that is present, and the sulphide Ni (NiS) is an analytical indicator for the amount of Ni that can actually be recovered by flotation. Assay results indicate that for the master composite nickel is mainly present as the sulphide form (88%).
A portion of the nickel (about 12%), however, is non-sulphide and most likely in solid
solution with amphiboles, serpentine & amphiboles (substitution in crystal structure). It has been reported that the nickel content of the silicate minerals is about 0.1 to 0.3% Ni. This portion of nickel cannot be recovered during sulphide flotation. As a result, maximum achievable nickel recovery in flotation is reduced accordingly. In the case of the present ore sample, it is speculated that the maximum nickel recovery during rougher flotation process will be about 85% of total nickel.
Wango
Can't be recovered during sulphide flotation - but, what if recovered in a second benefication
process designed for silicate nickel such as, other nickel juniors ?
Page 12
The value minerals of this ore are chalcopyrite, accounting for 1.2% of the overall mineral mass, and pentlandite accounting for 1.1% of the overall mineral mass.
Wango
Most know 75 micron is the preferred ore size for current - extraction recovery studies.
Yet, 2012 MET studies states the following,
Page 25
In the ground sample, an average of 72% of the chalcopyrite
occurs as liberated or free particles.
Based on these analyses, a regrind to ~20 μm should be sufficient. The nickel sulphide is slightly coarser, but will require regrinding to ~30 μm to achieve greater liberation. This will also be sufficient to liberate any pyrrhotite reporting to the Cu circui
2012 MET LINK
https://www.wellgreenplatinum.com/pdf/2012_07_Wellgreen_Met_Report.pdf
MICRON CHART ( page 2 )
https://gacc.nifc.gov/nrcc/dispatch/equipment_supplies/agree-contract/forms/MicronMesh.pdf
SUM
Extraction caters to sulphide nickel
While... nickel content of the silicate minerals is about 0.1 to 0.3% Ni
2014 / 2015 Crew deducted 0.10% Ni solid solution.
2014 Crew most likely
inspired by SGS met tests which revealed silicate nickel.
Hunch ?
Wellgreen resource is only, sulphides.
This same 2012 met study reveals the significant chloride.
Would be nice,
seeing wellgreen measured with several ore resources
- sulphide ( nickel salt )
- chloride ( nickel salt )
- solid solution ( hydoxide )
- metallic oxide
And... the older independent wellgreen report,
stated plats were also present in solid solution.