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Hidden in the Andean mountains, yet in close proximity to Lima (Peru) and only 30km's from the 2.15Bt Cu-Mo-Ag Toromocho porphyry mine, Inca's Chanape Project is emerging as an exceptional porphyry prospect. With the most recent drill hole (CH-DDH012) producing 55m* of 2.3% Cu, 0.6g/t Au, 42.9g/t Ag; the second-but-last hole (CH-DDH011) producing 284m at 0.32% Cu, 83ppm Mo and 6.73g/t Ag; with known mineralisation extending over a vertical distance of 1.3km; and with major mining houses showing intense interest, perhaps use of the oft bromide idiom "world-class" is not without foundation when describing Inca's Chanape porphyry discovery.
(Note: Copper -Cu, Molybdenum -Mo, Silver - Ag, Gold - Au).
The latest drill hole (CH-DDH012) completed at Chanape produced our best intersection to date:
55m @ 2.3% Cu, 0.60g/t Au, 42.9og/t Ag, from 155m, including:
10m @ 5.35% Cu, 0.015% Mo, 0.96g/t Au and 83.68g/t Ag from 186m, including:
- 4m @ 8.9% Cu, 0.025% Mo, 1.14g/t Au and 130.50g/t Ag from 188m.
- 10m @ 5.35% Cu, 0.015% Mo, 0.96g/t Au and 83.68g/t Ag from 186m, including:
The same hole also intersected:
- 67m @ 0.97g/t Au, 25.30g/t Ag from surface, with an overlapping interval of:
- 24m @ 0.52% Cu from 50m.
Add these results to the results of Ch-DDH011 (300m to the south):
284m @ 0.32% Cu, 83ppm Mo and 6.73g/t Ag, including:
- 97m @ 0.46% Cu, 106ppm Mo, 9.4g/t Ag from 770m
- 30m @ 0.93% Cu, 18.72g/t Ag from 886m
- 24m @ 0.37% Cu, 6.5g/t Ag from 970m
- 26m @ 0.50% Cu, 10.88g/t Ag from 1,021m (open at depth)
....and a clear indication is given: The porphyry at Chanape is in deed metal-bearing and it is producing ore-grade intersections even at this early stage of development. Chanape has huge upside potential with only a fraction drill tested. In this context, a suitable comparison to Toromocho is made. The 2.15Bt, Chinalco-owned Toromocho porphyry is mineralised in Cu-Mo-Ag - like Chanape. Toromocho is set to produce 300,000 tonnes of Cu-metal per year for 30 years.
In recent mapping we have discovered the largest breccia pipe to date on the property. Roughly 200m x 200m, this breccia pipe, and other newly discovered breccia's around it, sits at the top of Mount Chanape. With intrusive rocks also identified in the vicinity, extensive phyllic and argillic alteration, with known strong gold mineralisation in the area and a strong chargeability anomaly, this hitherto untested area could well prove to host something quite special.
The future looks fine for Inca. We are attracting the attention of major mining houses, we are expanding our drill permit capacity to 22,500m and 61 platforms and we are maturing our less-talked about, Peruvian projects as candidates for the next "Chanape".
It is our sincere intention to maximise shareholder value through the development of Chanape; through the generation of possible strategic partnerships and through the identification of next-gen projects with similar potential.
*All intervals are down-hole measurements.
The summit of Mount Chanape where large breccias have recently been identified. The higher colouration reflects widespread alteration.
It is the intention of the Company to develop its Chanape Cu-Mo-Ag-Au Porphyry Project into a maiden resource within a short time frame and achieve feasibility status within a five-seven year time frame. In the pursuit of this objective, the Company seeks to maximise shareholder value by adhering to its foundation principles of best-practise exploration and mining performance, optimal environmental management and community upliftment.
The above figure is a schematic NS geological cross-section of Chanape showing the juxtaposition of the Au-Ag-bearing breccias and the Cu-Mo-Ag-bearing porphyry. The enclosing “sulphide envelope” within which it is hoped an economic section of the porphyry exists, is believed to be responsible for the distinctive SP anomaly that occurs at Chanape. The SP anomaly (with at least 4 anomaly centres) is believed to represent high-sulphide (pyrite-rich) shoulders of the porphyry.
Drilling CH-DDH001 at Chanape
Such coincident features include:
- A mineralised monzodiorite-monzonite-qtz-monzonite porphyry “telescoped” sequence intersected in all deep drill holes;
- Potential ore-grade Au-Ag mineralisation at surface (eg: 108m @ 2.0g/t Au with Ag and Cu)
- Potential ore-grade Cu-Mo-Au-Ag mineralisation close to surface (eg: 55m @ 2.3% Cu with Au, Ag & Mo)
- Potential ore-grade Cu-Mo-Ag mineralisation below (eg: 284m @ 0.32% Cu with Mo & Ag)
- A breccia cluster covering an area 2.5kms x 1km, comprising at least 70 breccia bodies;
- Multiple porphyry intrusions;
- A large Spontaneous Potential (“SP”) anomaly;
- Multiple Chargeability anomalies;
- A ring magnetic high anomaly;
- Widespread propylitic and argillic alteration, mapped at surface and logged through drill core;
- Widespread gold, silver, copper mineralisation, including pervasive disseminated and high grade styles of mineralisation, assayed in drill core rock-chip sampling.
The Company has four projects in the south of Peru. They are all prospective for Cu-Mo porphyry mineralisation. They are all located within 50kms and surrounded by five world-class Cu-Mo porphyry mines/developments, including Cerro Verde and Los Calatos.
The majority of the Company's projects, including its flagship Chanape Cu-Mo-Ag-Au Project, are located in Peru, a country described as one of the premier mining and exploration destinations in the world. Peru hosts many world-class mines and developing mineral deposits, and attracts one fifth of the world's exploration expenditure.
Peru's porphyry belt
Porphyry deposits are the world's most important source of copper, molybdenum and rare earth elements, accounting for 60% of the world's supply of copper, and they are playing an increasingly important role in global gold production. Some of the largest mines in the world are porphyry deposits, including headline deposits:
- The Escondida Cu porphyry mine in Chile, which is currently the largest copper mine in the world in terms of annual copper production;
- The Grasberg Au porphyry mine in Indonesia, which is currently the largest gold mine in the world in terms of annual gold production; and
- The Oyuu Tolgoi Cu-Au porphyry deposit in Mongolia, which is currently the largest undeveloped Cu-Au deposit in the world, containing approximately 81 billion pounds of copper and 46 million ounces of gold in measured, indicated and inferred resources.
THE VALUE OF PORPHYRY DEPOSITS
Porphyry deposits can and do contain tremendous amounts of metal. Although they are typically low grade (<1% Cu, <1g/t Au) their size, not unusually >1 billion tonnes, ensures a huge metal payload. The contained value of porphyries is astonishing, the “price tag for porphyries in development counted in the hundreds of millions of dollars.
Some examples of recent porphyry transactions:
- June 2014: First Quantum buys Lumina Copper for US$470M who owns 100% of the Taca Taca Cu-Au-Mo porphyry: 2.165Bt @ 0.44% Cu, 0.08g/t Au, 0.013% Mo ARGENTINA
- April 2014: China Minemetals Corp. buys Las Bambas Cu-Mo-Ag-Au porphyry: 1.2Bt @ 0.66% Cu, 0.017% Mo, 3.3g/t Ag, 0.05g/t Au for US$5.85B PERU
- 2010: Barrick buys 25% of Cerro Casale Cu-Au-Ag porphyry: 1.8Bt @ 0.21% Cu, 0.5g/t Au, 1.4g/t Ag for US$474M CHILE
Are porphyries worth finding? Yes. Has Inca found one? Yes.
Inca has built a passionate team of Perth and Peru based professionals. Our Peru-based team comprises leaders in geological interpretation, exploration planning and execution, social, community and environmental management. Our Perth-based management adhere to the highest standard of corporate governance and compliancy regulations.
In a crowded junior resource sector, Inca discerns itself by its projects, people and performance. The port-folio of projects, described above, is a result of applying rigorous project selection criteria in Peru, at the time when the Company enjoyed first-mover advantage. Inca’s people, including the Board, management and consultants are all highly motivated to deliver positive outcomes. With respect to performance, it is the Board and Management’s explicit desire to instill and promote an ethos of “highest possible performance” - in all Company activities applicable to its own staff and to its consultants. Our performance should provide the catalyst for share price performance and shareholder value.
And “proof is in the pudding”: We’ve made a discovery; we’ve found a Cu-Mo-Ag-Au porphyry system by applying best-practise principals; we’ve identified mineralisation over a 1.3km vertical distance; we’ve attracted the attention of majors and we’ve managed the process of discovery in difficult market conditions.