Andromeda Metals Limited · ASX:ADN
Andromeda Metals — SA Exploration and Mining Conference (December 2017)
26 slides from Andromeda Metals's conference presentation, Dec 8, 2017
Slide 1: In-situ copper recovery investigation
For personal use only In‐situ copper recovery investigation Moonta – Wallaroo district 1
Slide 2: Andromeda Metals' Moonta Copper Project
Andromeda Metals’ Moonta Copper Project For personal use only Famous “Copper Triangle” location at southern end of Olympic IOCG province. • Copper first discovered in 1859 • Long history of conventional mining Focused on growing shareholder value 2
Slide 3: Conventional mines – Copper Triangle
Conventional mines – Copper Triangle For personal use only Poona Open Pit Wheal Hughes underground Is there a different way of producing copper? Focused on growing shareholder value 3
Slide 4: In-situ recovery (ISR) concept
In‐situ recovery (ISR) concept For personal use only Image taken from Seredkin, Zabolotski and Jeffress, 2016 Focused on growing shareholder value 4
Slide 5: Examples of ISR copper project resources
Examples of ISR copper project resources For personal use only • Van Dyke project (Copper Fox Metals – Arizona US): Resource 260 million tonnes grading 0.25% Cu. 89% soluble copper • Florence project (Taseko Mines – Arizona US): Resource 300 million tonnes grading 0.36% Cu. 70% soluble copper • Gunn
Slide 6: Critical features required for ISR
Critical features required for ISR For personal use only Mineralogical requirements • Target metal must be present as a leachable/soluble mineral phase • Mineralisation should not contain non‐target phases which consume lixiviant (leaching agent) Hydrological requirements • Mineralised zone must be
Slide 7: Moonta ISR potential
Moonta ISR potential For personal use only Two deposits appear to have the right characteristics for ISR. • Wombat • Bruce Zone at Alford West Focused on growing shareholder value 7
Slide 8: Wombat
Wombat For personal use only • Copper mineralisation hosted in deep trough (>350m?) well below the water table 170m – 305m 135m @ 0.64% Cu water table 8
Slide 9: Wombat core 70-77m
Wombat core 70‐77m For personal use only ~70 – 77m downhole tight, fresh impermeable metasediment water table 9
Slide 10: Wombat core 253-267m
Wombat core 253‐267m For personal use only ~253‐267m downhole Porous, permeable (?) oxidised material assaying water table ~1.5% Cu 10
Slide 11: Wombat core 396-405m
Wombat core 396‐405m For personal use only ~396‐405m downhole tight, fresh, impermeable metasediment water table insignificant Cu 11
Slide 12: Wombat trough 3-D model
Wombat trough 3‐D model For personal use only • Looking west along trough This deep hole hit 30m @ 0.5% Cu and passed below the trough Focused on growing shareholder value 12
Slide 13: Wombat ISR resource potential
Wombat ISR resource potential For personal use only • Looking southwest • Model is of trough only where it is below general base of weathering Model volume: ~43M m3 Density factor: 1.8t/m3 Tonnage: ~75 MT Ave grade samples in model Cu: 0.19% Focused on growing shareholder value 13
Slide 14: Bruce Zone (Alford West)
Bruce Zone (Alford West) For personal use only Drill section 752,750mE 46m – 99m 53m @ 0.31% Cu 90m – 133m 43m @ 0.46% Cu 159m – 230m 71m @ 0.34% Cu Focused on growing shareholder value 14
Slide 15: Bruce Zone trough 3-D model
Bruce Zone trough 3‐D model For personal use only Looking east Focused on growing shareholder value 15
Slide 16: Bruce Zone ISR resource potential
Bruce Zone ISR resource potential For personal use only • Looking north • Bottom of trough remains undefined Model volume: ~20M m3 Density factor: 1.8t/m3 Tonnage: ~35 MT Ave grade samples in model Cu: 0.22% Focused on growing shareholder value 16
Slide 17: Large Exploration Target estimated
For personal use only Large Exploration Target estimated 3D models of the Wombat and Bruce weathering troughs allow estimation of resource potential • Andromeda Metals has estimated a combined Exploration Target for the Wombat and Bruce troughs of 80 to 120 million tonnes at a grade ranging between
Slide 18: Wombat – first pass copper solubility tests
For personal use only Wombat – first pass copper solubility tests Focused on growing shareholder value 18
Slide 19: Bruce Zone – first pass copper solubility tests
For personal use only Bruce Zone – first pass copper solubility tests Focused on growing shareholder value 19
Slide 20: Bruce Zone – permeability
For personal use only Bruce Zone – permeability Deep aircore and RC drilling into the These aren’t fuel trucks – they are water tankers used to control very high ground water flows mineralised trough at encountered during drilling at Bruce. Bruce hit significant flows of ground water suggesting a hi
Slide 21: Resource growth potential
Resource growth potential Oblique view of both trough models For personal use only Bruce Zone Wombat No deep drilling in 3km interval between Wombat and Bruce Zone Focused on growing shareholder value 21
Slide 22: Gravity geophysics can see deep troughs
For personal use only Gravity geophysics can see deep troughs PBLOCK trough model assumptions (based on Wombat/Bruce) • Depth: 300m • Width: 60m • Strike: 800m • Depth to top: 50m • Density contrast: ‐0.9gm/cm3 (2.7‐1.8 gm/cm3) • Results in negative gravity anomaly of ~1.25 mgal
Slide 23: Gravity suggests additional troughs likely
Gravity suggests additional troughs likely Residual gravity image – negative anomalies are blue For personal use only
Slide 24: Moonta ISR summary – South Australia
For personal use only Moonta ISR summary – South Australia Critical ISR requirements • Target metal present as soluble mineral phases • Other lixiviant consuming phases absent • Mineralised zone is porous • Mineralised zone is permeable ? • Mineralisation is below the water table • Aquiclude
Slide 25: Disclaimer, Competent Person's statement and JORC statements
Disclaimer, Competent Person’s statement and JORC statements For personal use only Disclaimer The information in this presentation is published to inform you about Andromeda Metals Limited (“Andromeda Metals” or the “Company”) and its activities. Some statements in this presentation regarding estima
Slide 26: For personal use only
For personal use only 26
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