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Prophecy Platinum Corporation – Wellgreen Property – Project 50149-001
Table 20 shows the locked cycle test (LCT-3) results. Detailed results are presented in Appendix F.
Table 20: LCT-3 Test Results
LCT-3 Weight Assays, (Cu, Ni, S, Fe, MgO %) (Pt, Pd, Au g/t) % Distribution
Product % Cu Ni S Pt Pd Au Fe MgO Cu Ni S Pt Pd Au
Bulk Clnr 2 Conc. 2.78 11.0 9.28 27.2 3.39 10.3 0.80 31.6 4.13 83.5 57.6 25.9 22.7 62.9 50.3
Ni 3rd Clnr Conc. 2.36 0.59 1.78 12.8 3.55 1.45 0.11 22.4 17.9 3.8 9.4 10.3 20.2 7.5 6.1
Ni 1st Clnr Tail 15.7 0.10 0.34 4.41 0.66 0.41 0.03 ─ ─ 4.3 12.1 23.8 24.9 14.1 12.1
Ni Scav Tail 69.9 0.04 0.11 1.06 0.14 0.06 0.02 ─ ─ 7.6 16.6 25.4 24.1 9.5 25.4
Magnetic Clnr Conc. 0.21 0.85 1.22 8.93 6.19 5.41 0.52 24.4 18.4 0.5 0.6 0.7 3.2 2.5 2.5
Magnetic Rghr Tail 9.00 0.01 0.19 4.50 0.23 0.18 0.02 ─ ─ 0.2 3.7 13.8 4.9 3.5 3.6
Combined Concentrates 5.36 6.01 5.66 20.1 3.57 6.22 0.48 27.3 10.8 87.8 67.6 36.9 46.0 72.9 58.9
Head (calc.) 0.37 0.45 2.92 0.42 0.46 0.04
Finally, LCT-5 was conducted using the same bulk circuit conditions as the LCT-3. Lime was added for
copper separation and SIPX was added to copper rougher. Aero 4037 was added into the regrind as this
worked good in the magnetic separation circuit and was okay in LCT-2 on the first cleaner tails. CuSo4
was added in the Ni cleaners. Ni scavenger concentrate was reground in this test. A copper concentrate
with a grade of 19% Cu at a recovery of 75.5% was achieved. A total Ni concentrate of 8.75% Ni at 65%
recovery was produced in this test. The Fe/MgO ratio and MgO content of the final concentrate were
within the accepted limits however, the copper concentrate contained higher than 1% Ni which does not
meet the saleable copper concentrate quality.
Table 21 presents the locked cycle test (LCT-5) results. The metallurgical results of LCT-5 are shown in
Appendix F.
Table 21: LCT-5 Test Results
LCT-5 Weight Assays, (Cu, Ni, S, Fe, MgO %) (Pt, Pd, Au g/t) Distribution, %
Product % Cu Ni S Pt Pd Au Fe MgO Cu Ni S Pt Pd Au
Cu Clnr 1 Conc 1.52 19.1 1.37 25.5 2.51 6.06 1.41 28.8 4.75 75.5 4.5 14.6 9.5 19.5 47.0
Cu Rougher Tail (Ni Conc.) 1.85 1.66 14.3 25.0 3.63 12.0 0.45 30.8 5.58 8.0 56.9 17.4 16.7 47.2 18.3
Ni 3rd Clnr Conc 1.44 0.88 2.44 17.2 5.76 2.32 0.19 28.2 14.4 3.3 7.6 9.3 20.7 7.1 5.9
Ni 1st Clnr Tail 16.2 0.12 0.36 4.21 0.59 0.43 0.03 ─ ─ 4.9 12.4 25.7 23.7 14.8 11.5
Ni Scav Tail 79.0 0.04 0.11 1.11 0.15 0.07 0.01 ─ ─ 8.2 18.7 33.0 29.5 11.4 17.4
Magnetic Cleaner Con 0.2 1.68 1.88 11.6 8.04 8.58 7.46 26.5 15.9 0.7 0.7 0.7 3.4 3.1 27.7
Magnetic Cleaner Tail 3.7 0.06 0.25 4.82 0.68 0.45 0.16 ─ ─ 0.6 2.0 6.7 6.2 3.5 13.0
Magnetic Rougher Tail 7.6 0.03 0.20 4.20 0.26 0.22 0.05 ─ ─ 0.6 3.3 12.1 4.9 3.5 8.2
Total Ni Conc. 3.46 1.34 8.75 21.1 4.73 7.81 0.68 29.5 9.77 12.0 65.1 27.5 40.7 57.3 51.9
Head (calc.) 0.38 0.46 2.65 0.40 0.47 0.05 ─ ─
5. High Nickel Composite Flotation Testwork
As mentioned earlier a High Ni Composite was prepared from the third shipment of the samples to SGS
Vancouver Metallurgy. The grades for this composite were higher but contained lower MgO (19.8%) as
compared with the master composite. Flotation tests HNI-F1 to HNI-F5 were conducted using the high
nickel composite.
SGS Minerals Services
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