Wellgreen Project Preliminary Economic Assessment ... - OTCIQ.com

TerraMS-12JUL-001 Wellgreen - Pt-Pd Minerals Deportment – LCT01 Tails
SUMMARY OF OBSERVATIONS
Nickel 1 st Cleaner Tail Cycle G – Locked Cycle Test 01 - Wellgreen deposit
Assays, % Assays g/ t
Cu Ni S Fe Pt Pd Au
Ni 1st Cleaner Tail 0.13 0.48 7.48 18.5 1.02 0.61 0.05
Data from the entire set of PGE minerals identified in the Nickel 1 st Cleaner Tail-G sample are presented
in Appendix 1, whereas a series of BSE images illustrating pertinent features are presented in Appendix 3.
A summary of the types of PGE minerals and other precious metal particles is presented in Table 4,
whereas the distribution of the mode of occurrence of these particles is presented in Table 5.
Table 4. Ni Cln 1 st Tail- Type of PGE Minerals
Precious Metal Code Vol % Distribution
Auro-Cuprite Au1 0.5
Paladium Antimonite Pd-Sb 5.1
Palladium (+/-Sb+/-Ni)-Telluride Pd-Sb(Ni)-Te 24.2
sperrylite Pt-As 70.1
Table 5. Ni 1 st Cln Tail- Mode of Occurrence of PGE Minerals
Precious Metal Code Vol % Distribution
inclusion 1 2.1
at grain boundaries 4 16.8
attached/ exposed 5 23.8
liberated 6 57.3
A total of ninety-four PGE particles and one gold particle were identified. Sperryllite (Pt-As) is the main
PGE mineral in this tail sample (~ 70 vol %), whereas unclassified Pd phases (Pd Antimonite and Pd
tellurides) account for approximately 30% of the PGE minerals observed. Finally, one occurrence of
auro- cuprite (?) was also identified.
The majority of the identified PGE particles occur as minute liberated grains (~ 57 vol%), however the
degree of liberation of sperrylite grains (~ 61% liberated) is markedly higher than the degree of liberation
of Palladium-bearing particles (~ 48% liberated). In contrast, very few grains were entirely locked as
minute inclusions. Most of the PGE minerals that are not liberated are chiefly intergrown with pyrrhotite,
and a few with magnetite, or silicate gangue.
The entire group of identified particles possess a re-calculated grain size diameter of less than 4.6 µm;
only five of the ninety-five identified particles present a diameter coarser than 3 µm. The overall average
for these particles is 1.5 µm.
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