Corazon Mining Limited (ASX: CZN) has announced highly encouraging additional assay results from the drilling at its Lynn Lake Nickel-Copper-Cobalt Sulphide Project in Manitoba, Canada.
The company reported mineralised high-grade nickel intervals from “A” Orebody as well as “E orebody”.
Significant intercepts from “A Orebody” include 37.8 m @ 1.68%Ni, 0.67%Cu, 0.050%Co from 10 metres; including 22.6m @ 2.30%Ni, 0.82%Cu, 0.068%Co from 24.4 metres.
Intercepts from “E Orebody” include 4.5 metres @ 1.17%Ni, 0.22%Cu, 0.029%Co from 25 metres, and 4.1 metres @ 2.09%Ni, 0.57%Cu, 0.073%Co from 26.9 metres.
CZN said that these near-surface high-grade intersections strengthen the potential to add to Lynn Lake’s significant nickel-sulphide resource base.
It may be noted that higher-grade intervals are typically supported by broad, anomalous zones of mineralisation.
The company announced that all priority assays have been returned. CZN said that plans for further drilling at the A Orebody and E Orebody and other targets are underway, as are development/ metallurgical studies.
Lynn Lake project
Corazon’s 100%-owned Lynn Lake Nickel-Copper-Cobalt Sulphide Mining Centre is located in Canada. The current total Resource Estimate includes six deposits within the Mining Centre.
The current Resource includes 16.3Mt @ 0.72% Ni, 0.33% Cu, 0.033% Co (Indicated and Inferred, at 0.5% Ni cut-off), for total contained metal of 116,800t Ni, 54,300t Cu, 5,300t Co; with 5.4Mt @ 0.99 Ni, 0.41% Cu, 0.043% Co (Indicated and Inferred, 0.7% Ni Cut-off) of high-grade material.
Drilling at Lynn Lake
The company had completed its drilling program at Lynn Lake project in December 2019.
Priority targets for the drilling program at Lynn Lake included near-surface mineralisation; areas on-trend from historical mines; and areas adjacent to existing resources.
The drilling mainly targeted two historical deposits – the A Orebody and E Orebody – with seven holes for approximately 1,122 metres of diamond core drilling completed.
It may be noted that both the A Orebody and E Orebody areas have potential extensions to known mineralisation that have not been historically tested with drilling.
CZN said that there are multiple other areas within the Mining Centre, also yet to be drill tested, that may also have the potential for near surface mineralisation surrounding historical underground mining operations.
The company’s latest phase of drilling tested near surface expressions of mined areas that operated continuously for 24 years at an average grade of 1.02% nickel and 0.54% copper.
Further high-grade results reported
The company has now reported the final assay results from the drilling that targeted two historical deposits, the A Orebody and E Orebody.
CZN said that the holes LL2019-01, LL2019-02, and LL2019-03 tested areas around the A Orebody, historically covered with infrastructure from the “A-Shaft” and processing plant area within the Lynn Lake Mining Centre.
Hole LL2019-02 intersected a high-grade interval of 22.6 metres @ 2.30%Ni, 0.82%Cu, 0.07%Co. This interval was within a broader zone of mineralisation including 37.8 metres @ 1.68%Ni, 0.67%Cu, 0.05%Co, from just 10 metres down hole.
Hole LL2019-01 returned good marginal-grade material with 7 metres @ 0.62%Ni, 0.37%Cu, 0.02%Co.
Hole LL2019-03 intersected good zones of marginal-grade material to the north of the crown-pillar stope, including three zones with intervals of four to nine metres downhole and grades of between 0.50% and 0.65% nickel.
The company reported that the holes LL2019-04 and LL2019-05 tested areas around the E Orebody.
Hole LL2019-04 tested the hangingwall mineralisation east of the stope and returned two good zones of mineralisation, 9m @ 0.93%Ni, 0.25%Cu, 0.02%Co (including 4.5m @ 1.17%Ni, 0.22%Cu, 0.03%Co) and 7m @ 0.93%Ni, 0.42%Cu, 0.03%Co. This hole intersected stope-fill at 64 metres and was terminated at 69 metres.
Hole LL2019-05 tested the footwall mineralisation west of the stope, returning 4.1m @ 2.09%Ni, 0.57%Cu, 0.07%Co. This hole was terminated when it intersected stope fill at 36 metres.
Drilling at Farley East
The company reported that the holes LL2019-06 and LL2019-06A targeted an atypical geophysical feature east of the Farley Shaft in the central area of the A Plug.
CZN said that hole LL2019-06 was abandoned due to poor drilling conditions while hole LL2019-06A was the re-drill of hole LL2019-06.
The company reported that selected samples from these holes have been submitted for analysis.
Updates and next steps
The company reported that there are several other areas in the Mining Centre with the potential for near surface mineralisation surrounding historical underground mining operations.
The Company said that it is currently working on new drilling programs to test these areas, in addition to further work at the A Orebody and E Orebody prospects.
CZN reported that it has identified the Fraser Lake Complex (FLC) as a priority target area. The company said that the exploration work at FLC is well underway and is expected to identify priority drill targets for consideration in the near term.
Corazon said that the mining and mineral processing studies currently in progress for Lynn Lake have identified areas where it is believed processes can be improved and costs reduced.
The company said that the priority focus for this work will include the scoping and testwork for pre-flotation “sorting” of low-grade disseminated mineralisation to feed grade; and onsite downstream processing options.
Managing Director, Brett Smith said: “Historical mining at Lynn Lake focused largely on underground operations and the lack of near-surface exploration around the previously mined deposits has provided a substantial opportunity for Corazon to expand what is already a significant nickel sulphide resource base.
Our targeted drilling was designed to identify haloes of disseminated mineralisation around the mined deposits, and the results have been highly successful with the exceptional grades returned significantly exceeding expectations. In addition, the results have validated our targeting processes and paves the way for our ongoing, targeted exploration and drilling at Lynn Lake.”