공시 • Jun 29
Miramar Resources Limited Provides an Update on Exploration Activities at its 80%-Owned Gidji JV Project in the Eastern Goldfields of WA
Miramar Resources Limited provided an update on exploration activities at the Company's 80%-owned Gidji JV Project in the Eastern Goldfields of WA. The Gidji JV Project ("Gidji" or "the Project") is located within the Boorara Shear Zone, approximately 15km north of Kalgoorlie. Miramar has been actively exploring at Gidji since listing on the ASX and believes there is potential for discovery of a new gold camp, with multiple deposits, through systematic exploration. Miramar's Executive Chairman, Mr. Allan Kelly, said that, like many other exploration companies, Miramar is currently experiencing significant delays in obtaining Programme of Work (POW) approvals, difficulties in securing suitable drill rigs and extended wait times for assay results due to ongoing COVID staffing issues and overwhelming demand. Marylebone East RC Drilling: Two RC holes were drilled at Marylebone East to test beneath consecutive aircore holes with high-grade gold results. The programme was planned around an RC rig travelling between two other jobs. The two holes, GJRC023 and GJRC024, intersected spinifex textured komatiite and pyroxenite which appears to have been intruded by a later dolerite unit. Both the ultramafic rocks and the dolerite were intensely chlorite-sericite altered with widespread quartz veining, fine-grained disseminated pyrite mineralisation and sporadic, coarse-grained pyrite, arsenopyrite and chalcopyrite. Analysis of samples from GJRC024 by portable XRF indicated pervasive alteration from 147m downhole. Both holes repeated the supergene Au anomalism seen in aircore holes at the interface between the paleochannel sediments and the weathered basement and GJRC024 returned an intercept of 1m @ 1.17g/t Au at the lower contact between the dolerite and the ultramafic rocks. Miramar's Executive Chairman, Mr. Allan Kelly, said that, along with the presence of the mineralised dolerite, which fits the "Paddington lookalike" model, the amount of alteration, quartz veining and sulphides was indicative of a significant hydrothermal system capable of forming a large primary gold deposit. The Company has commenced follow-up RC and diamond drilling at Marylebone East in order to gather more information about the geology, alteration and mineralisation of this high-priority target, as well as the orientation of any potentially mineralised structures. Northern Targets The Company is pleased to advise that, following the recent receipt of POW and heritage approvals, the Company will shortly commence a substantial aircore drilling campaign over the 4km long northern portion of the Boorara Shear Zone. The "Boorara North" target apparently contains the same geology as Marylebone, and the Paddington deposit further north, but has only been sporadically drilled with wide-spaced shallow RAB drilling. Given the lengthy delays in receiving assay results, and the recent capital raising, the Company has elected to combine the proposed first and second phase drilling campaigns into a single programme. The upcoming programme will therefore comprise approximately 200 aircore holes, drilled to "refusal", on a nominal 200m x 50m grid, and will take approximately 4 weeks to complete. Given the extensive strike length of the "Highway Ultramafic", which hosts nickel sulphide mineralisation at the historic Scotia nickel mine and the Saints nickel deposit being developed by Auroch Minerals Limited, the Boorara North target also has significant unrealised potential for komatiite-hosted nickel sulphide mineralisation and potentially also lateritic nickel mineralisation. In addition to gold analysis, Miramar routinely analyses aircore samples for a multi-element suite which includes nickel, copper, chromium, and cobalt, which can be used to highlight potential nickel targets. In addition to the Boorara North target, at least one other high priority gold target has been identified for near-term drill testing following the ongoing review of historical drilling data for the Project. The "Lake" target is located at an obvious flexure of a thin wacke unit within a broader felsic volcanoclastic package. The flexure is coincident with a zone of demagnetisation suggesting hydrothermal alteration and/or gold mineralisation. Aircore drilling conducted by Goldfields Exploration in 1995/1996 initially intersected anomalous Au results above a package of sandstone, carbonaceous shales and felsic and intermediate tuffs which were then followed up with further aircore and then nine RC drill holes. The RC drilling intersected a gently west dipping sequence of altered and sheared shales, sandstone and feldspathic wacke and tuff units with westerly dipping primary gold mineralisation. Significant results from the RC drilling were as follows: · PPRC316 - 3m @ 0.6g/t Au (84-87m) · PPRC321 - 2m @ 5.32g/t Au (69-71m) · PPRC322 - 3m @ 3.6g/t Au (101-104m) and 4m @ 0.63g/t Au (122-126m) No further RC drilling was completed and subsequent aircore drilling did not return significant results. The ground was surrendered in 2000 and no further work completed. The tenor of the gold mineralisation increases towards the NW and it appears there may also be a north- westerly plunge component meaning the follow-up aircore holes 100m to the north may have been too shallow. Limited aircore drilling to the southeast is also mostly shallow. Given the combination of the structural setting, the historic high-grade drill results and the potential strike length of the target, which exceeds 1km, Miramar has elevated the status of this target and planned an RC drilling programme testing along strike and down dip from the historic results. The RC programme will be completed as soon as all relevant approvals are received and a suitable drill rig secured. Miramar advises that the Company is still awaiting a significant number of assays from the Blackfriars and Highway aircore drilling campaigns completed in April. Follow-up aircore and/or RC drilling of these two high-priority targets is expected once the results are received and interpreted. Other proposed work at Gidji includes the following: · IP survey over the 8-Mile target to help refine potential further diamond drilling · awaiting soil sampling results from "The Jog" target with RC and/or diamond drilling planned Parallel to the substantial work programmes at Gidji, the Company is: · locating a suitable rig to complete diamond drilling on the lake at Glandore East · planning reconnaissance aircore drilling at the Randalls project · conducting gravity and heritage surveys at Whaleshark in preparation for aircore drilling · planning geochemical sampling of the late-time EM anomalies identified at Mt Vernon and a reconnaissance visit to the Blue Bar prospect, both within the Bangemall Ni-Cu-PGE project.