The Kilbricken project is a new high-grade Zn-Pb-Ag-Cu discovery and is the Company’s flagship project. The project is drilled over more than 1km and is ready to explore and expand within a 40km strike area.
Massive sulphide mineralization at Kilbricken most commonly consists of early massive-textured, fine-grained pyrite, galena and sphalerite cross-cut by coarse-grained sphalerite and galena, resembling sulphides found in the overlying veins. It differs from most other Irish zinc/lead prospects in that it is rich in silver, where the silver is generally associated with galena-rich zones.
The Kilbricken Project is considered to be highly prospective for discovering and developing important zinc-lead-silver sulphide deposits. The Kilbricken deposit, as currently delineated, is open along strike and both in an up-drip and down-dip direction. All projects on the Property are at an exploration stage; there are no mine development or mining operations.
Historical explorers Belmore Resources and Lundin Mining discovered two main mineralized zones:
- The Zinc Zone, being the initial discovery area, which has been drilled within an area of 950 metres by 400 metres, between 360-440 metres vertically below surface. Significant drill results in this zone include DH46: 20.5m @ 7.5% Zn, 9.9% Pb, 0.07% Cu, 74.6g/t Ag from 415.3m and DH06: 21.3m @ 11% Zn, 4.8% Pb, 0.06% Cu, 94.4g/t Ag from 441.9m.
- The Copper Zone was found later in the Lundin program and is drilled within an area of 400 metres by 200 metres, between 520-670 metres vertically below surface. Significant drill results in the Copper Zone include DH167: 4.5m @ 0.8% Zn, 2.6% Pb, 18.91% Cu, 867.6g/t Ag from 616 metres.
The main Kilbricken mineralization has been drilled within an area of 1,500 metres by 800 metres in plan view and remains open in most directions. Mineralization, defined as ≥ 4.0m @ ≥4.00% Zn Eq or 16m% Zneq where Zn Eq = Zn% +(Pb% x 1.15) + (Ag ppm x 0.037917), ranges in thickness from 2 metres to 31 metres thick and averages 7.5 metres thickness.
Kilbricken better mineralized drill intersections:
20.5m @ 7.5% Zn, 9.9% Pb, 0.07% Cu, 74.6g/t Ag from 415.3m
21.3m @ 11% Zn, 4.8% Pb, 0.06% Cu, 94.4g/t Ag from 441.9m
11.8m @ 9.8% Zn, 5.7% Pb, 0.07% Cu, 178.2g/t Ag from 484.6m
9.4m @ 4.1% Zn, 12% Pb, 0.52% Cu, 242.8g/t Ag from 442.1m
10.0m @ 13.8% Zn, 5.5% Pb, 0.08% Cu, 62.8g/t Ag from 448.1m
19.3m @ 7.2% Zn, 1.2% Pb, 0.18% Cu, 64.6g/t Ag from 425.7m
17.2m @ 2.9% Zn, 4.4% Pb, 0.11% Cu, 83.5g/t Ag from 447.9m
4.5m @ 0.8% Zn, 2.6% Pb, 18.91% Cu, 867.6g/t Ag from 616.5m
10.4m @ 8.4% Zn, 3.9% Pb, 0.09% Cu, 26.5g/t Ag from 607m
10.0m @ 0.9% Zn, 8.7% Pb, 0.16% Cu, 90.7g/t Ag from 619m
4.1m @ 21.5% Zn, 5.7% Pb, 0.1% Cu, 95.4g/t Ag from 447.6m
Given the general flat lying and stratabound nature of mineralization and steep angles of all drillholes mentioned, the true thickness of the mineralized interval quoted is interpreted to be approximately 95% of the sampled thickness.
Lundin completed significant work on the property. A total of 278 drillholes for 134,000 m of diamond drilling was completed over the entire project. A total of 222 drill holes for 118,000 metres were drilled at the Kilbricken area. Lundin also undertook regional exploration in the remainder of the Clare Property, largely focussed on other Waulsortian-hosted zinc-lead prospects. Lundin carried out 616 metres of drilling at the Ballyvergin prospect with the objective of discovering additional zones of copper-silver mineralization. Lundin drilled a total of 2,370 metres on the Kilmurry Project, located within the Clare project area, 9 kilometres south-east of Kilbricken. In addition, significant surface geochemical and multiple geophysical surveys have been undertaken by Lundin and previous operators on the Clare project area. Of note are a 3D seismic survey over the main Kilbricken mineralization in 2011, and 2D seismic survey conducted in 2012 that consisted of 8 traverses (3-3.5 km long) over a total 10 kilometre strike length, spaced between 1-2 kilometre across the regional Kilbricken extensions.
Since early 2017, Hannan has completed the following exploration work program in and around the Kilbricken resource.
A diamond drill program comprising 12 holes for 6,492 metres and focused on expanding the Kilbricken resource has been completed. Many drill holes intersected significant mineralization which extended both the Fort and Chimney Zones. Drill highlights include DH 17-3679-217 (“DH217”) at the Fort Zone, that was one of the most mineralized ever drilled at the property:
Drill highlights include:
DH 17-3679-217 (“DH217”) at the Fort Zone, one of the most mineralized ever drilled at the property:
- 8.0 metres @ 4.1% Zn, 33.7% Pb and 174 g/t Ag (37.9% Zn+Pb) from 528 metres, including 3.2 metres @ 8.4% Zn, 72.8% Pb and 388 g/t Ag (81.2% Zn+Pb) from 528 metres;
- 3.4 metres @ 5.2% Zn, 4.3% Pb and 33 g/t Ag (9.5% Zn+Pb) from 570 metres;
- 26.6 metres @ 7.5% Zn, 0.9% Pb and 14 g/t Ag (8.4% Zn+Pb) from 588 metres, including18.8 metres @ 8.8% Zn, 1.1% Pb, 19 g/t Ag (9.9% Zn+Pb) from 588 metres.
DH 17-3679-218 (“DH218”), drilled at Fort Zone intersected massive sulphides within a down-hole thickness of 55 metres:
- 4.0 metres @ 0.7% Zn, 8.9% Pb and 31 g/t Ag (8.6% ZnEQ) from 526 metres, including 1.4 metres @ 1.6% Zn, 15.2% Pb and 53 g/t Ag from 526 metres and 1.0 metres @ 0.4% Zn, 13.8% Pb and 46 g/t Ag from 529 metres;
- 6.0 metres @ 2.5% Zn, 1.8% Pb and 13 g/t Ag (4.4% ZnEQ) from 544 metres, including 2.1 metres @ 5.0% Zn, 3.7% Pb and 25 g/t Ag from 548 metres;
- 6.4 metres @ 4.8% Zn, 1.3% Pb and 15 g/t Ag (6.3% ZnEQ) from 558 metres, including 1.1 metres @ 13.3% Zn, 3.1% Pb, 34 g/t Ag from 558 metres;
- 10.0 metres @ 3.4% Zn, 1.0% Pb and 13 g/t Ag (4.7% ZnEQ) from 571 metres.
DH 17-3679-219 (“DH219”), a 50 metre step out hole from the Fort Zone intersected massive sulphide mineralization within a total down-hole thickness of 92.9 metres:
- 8.4m @ 8.0% ZnEQ (6.2% Zn, 0.9% Pb, 15 g/t Ag and 0.35% Cu) from 599.0m, including 1.4m @ 20.8% ZnEQ (16.8% Zn, 3.5% Pb, 30 g/t Ag, 0.2% Cu) from 604.0m.
- 12.8m @ 5.1% ZnEQ (3.2% Zn, 1.8% Pb, 13g/t Ag and 0.05% Cu) from 631.5m, including 0.9m @ 17.8% ZnEQ (15.3% Zn, 2.1% Pb, 25 g/t Ag, 0.1% Cu) from 643.4m.
DH 17-3679-220 (“DH220”) first drill hole to test along strike from the Chimney Zone, was a 75 metre step out:
- 3.3m @ 10.4% ZnEQ (3.6% Zn, 6.5% Pb, 58 g/t Ag and 0.1% Cu) from 477.0m, including 1.0m @ 18.6% ZnEQ (3.7% Zn, 14.5% Pb, 121 g/t Ag, 0.2% Cu) from 478.6m.
The remaining eight drill holes of the 2017 program (DH 17-3679-221 through to DH 17-3679-229; DH 17-3679-225 was abandoned at 72 metres) were drilled outside the Kilbricken resource area, based primarily on soil anomalies. Hole 17-3679-221 intersected anomalous copper mineralization 300 metres along strike from the Fort Zone. Hole 17-3679-226, drilled up dip from the resource area, intersected hematite alteration which is considered a good indicator of proximity to mineralization. Drill hole 17-3679-228 contained both pyrite at the base of reef with intense dolomitization and a fault in the stratigraphic footwall, which indicates a drill target at shallower levels up-dip of from the resource area. The remaining five holes did not intersect significant mineralization or alteration
A maiden resource1 was established comprising 2.7 million tonnes at 8.8% zinc equivalent (“ZnEq”), including 1.4 million tonnes at 10.8% ZnEq indicated and inferred resources of 1.7 million tonnes at 8.2% ZnEq, including 0.6 million tonnes at 10.4% ZnEq. for Kilbricken, which immediately ranked it as one of the top ten base metal deposits in Ireland by tonnes and grade (data sourced from the Irish Exploration, Mining Division website).
Hannan also commenced locked cycle metallurgical testwork utilizing the services of Wardell Armstrong late in 2017 and results will be available during Q2 2018. During 2017 the Company announced the results of a gap analysis on mineralogical investigations on the Kilbricken project, Ireland by Dr. Kurt Forrester of Arn Perspective Ltd. Based on this study and the available information, it is likely a conventional lead-zinc flotation circuit at Kilbricken should produce a saleable mineral concentrate.