ASX RELEASE
13 January 2022 ASX Code: GIB
For personal use only
Phase 6 Drilling Identifies New +300 metre Targets
at Edjudina Gold Project, WA
__________________________________________________________________
- Phase 6 aircore drilling at the Edjudina Gold Project has identified two new +300 metre strike length targets for follow-up drilling at the Ace of Hearts and Triumph prospects
- Phase 6 drill intersection highlights include:
Hole ID | From (m) | To (m) | Interval (m) | Au (g/t) | Prospect |
GAC452 | 21 | 25 | 4 | 4.59 | Triumph |
including | 21 | 22 | 1 | 13.80 | Triumph |
GAC458 | 0 | 26 | 26 | 1.09 | Neta |
GAC457 | 14 | 25 | 11 | 1.36 | Neta |
GAC446 | 14 | 17 | 3 | 2.29 | Triumph |
GAC449 | 27 | 31 | 4 | 1.16 | Triumph |
GAC455 | 18 | 30 | 12 | 0.48 | Triumph |
GAC425 | 20 | 23 | 3 | 1.22 | Ace of Hearts |
Plus numerous other mineralised intersections (Appendix A)
- Infill drilling at Neta confirms the consistency of gold mineralisation to surface (26m @ 1.09 g/t from surface)
- The ten Phase 6 drill holes at the Triumph Prospect delineated a new 300m mineralised target zone on five separate drill lines. Mineralisation was encountered in every drillhole. The consistency of this mineralisation, and the identification of high-grade zones are highly encouraging
- At the Ace of Hearts Prospect, 160m wide-spaced reconnaissance drilling returned a very encouraging 3m @ 1.20g/t from 20m. Mineralisation is open both up and down dip, and over a strike length of 360m. This provides an excellent target for follow-up aircore drilling and may prove to be a significant discovery
- Phase 6 drilling encountered numerous intersections of mineralised porphyry (acid intrusive rock) at both the Ace of Hearts and Triumph prospects. This raises the prospectivity for the Edjudina field to host large-tonnageporphyry-style gold deposits. The Company is reviewing all Edjudina data with a view to targeting porphyry-style gold
Phase 6 drilling at the Neta Prospect,
Edjudina Gold Project
Gibb River Diamonds Limited | 1/16 Ord Street | T +61 8 9422 9555 | E info@gibbriverdiamonds.com |
ABN 51 129 158 550 | West Perth WA 6005 | W www.gibbriverdiamonds.com |
ASX RELEASE
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1.0 Edjudina Gold Project | GIB 100% |
Gibb River Diamonds Limited ('GIB' or the 'Company') is pleased to announce results from the Phase 6 AC (aircore) drilling program at the Edjudina Gold Project (GIB 100%), which took place from 5 to 29 November 2021. A total of 98 holes were drilled for 3,397 metres. There were no accidents or lost time incidents, although several days were lost to wet weather and lightning shutdowns. Further delays to the reporting of these results were incurred due to large third party sample loads at the assay laboratory.
A total of 1,268 samples were assayed as either one metre splits (788 samples) or as composite samples (480 samples), mainly 6 metre composites. Blank, duplicate, standard, and repeat samples were added as necessary to ensure data integrity for future resource calculations.
Edjudina's location, excellent logistics and proximity to an active haul road (to Northern Star's Carosue Dam mill) all add to the potential for development of discoveries at the project.
Figure 1: Edjudina Gold Project - Location Map
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Figure 2: Edjudina Gold Project - Prospects Location Map with Phase 6 Drilling
2.0 Phase 6 AC Drilling Results
The Phase 6 AC drilling program targeted the greenfields Ace of Hearts Prospect and the historic Triumph Prospect, with some minor infill drilling at the Neta and Perseverance prospects. This program was successful in identifying two new plus 300 metre strike length targets for follow-up drilling at Ace of Hearts and Triumph.
Importantly, numerous drillholes returned significant gold intersections within intrusive porphyries (acid intrusive rocks), which has generated a new and exciting exploration model for the Edjudina gold project.
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Table 1: Phase 6 Drilling Results - Significant Intercepts
Hole ID | From | To | Interval | Au | Prospect | Comment |
(m) | (m) | (m) | (g/t) | |||
GAC446 | 14 | 17 | 3 | 2.29 | inc. 1m @ 3.98gt; qtz and porphyry | |
GAC448 | 24 | 26 | 2 | 0.76 | Phyllite | |
GAC449 | 27 | 31 | 4 | 1.16 | Triumph | mineralised porphyry and phyllite |
GAC451 | 26 | 30 | 4 | 0.57 | mineralised porphyry | |
GAC452 | 21 | 25 | 4 | 4.59 | mineralised qtz and porphyry | |
including | 21 | 22 | 1 | 13.80 | ||
GAC455 | 18 | 30 | 12 | 0.48 | two 6m composites | |
GAC382 | 6 | 12 | 6 | 0.29 | 6m composite | |
GAC391 | 24 | 30 | 6 | 0.52 | Ace of | 6m composite |
GAC393 | 27 | 38 | 11 | 0.30 | 5m and 6m composites | |
GAC397 | 21 | 27 | 6 | 0.29 | Hearts | 6m composite |
GAC425 | 12 | 18 | 6 | 0.65 | 6m composite | |
20 | 23 | 3 | 1.22 | inc. 1m @ 2.92g/t; qtz and porphyry | ||
GAC457 | 14 | 25 | 11 | 1.36 | Carlsen lode | |
including | 14 | 19 | 5 | 2.10 | Neta Lodes | |
GAC458 | 0 | 26 | 26 | 1.09 | includes 6m comp of 0.43g/t | |
including | 11 | 19 | 8 | 2.31 | Carlsen lode | |
GAC456 | 6 | 18 | 12 | 0.33 | Perseverance | Porphyry and phyllite |
Notes:
Intervals are reported as drilled and are not reported as true widths All holes were drilled at -60 degrees, depths are downhole depths
Appendix A contains drilling results for every hole, which includes further significant results. Qualifiers for this table are in Appendix A
Detailed geology of the Neta Lodes Prospect is in the GIB ASX release dated 8 October 20203
3.0 Triumph Prospect
The Triumph Prospect (Figure 3) is a 400 metre long zone of historic workings dating from the early 1900s, with reported production of 6,382 oz Au @ 24.5 g/t from the Triumph area1.
GIB drilled ten holes at Triumph, delineating the southern 300m of Triumph workings. Mineralisation was encountered in every drillhole, including 4m @ 4.56g/t from 21m (including 1m @ 13.80 g/t), and 3m @ 2.29g/t from 14m. The consistency of this mineralisation, and the identification of high-grade zones within the mineralised envelope are highly encouraging.
Importantly, gold appears to be hosted within porphyry, an acid igneous rock, and porphyry-associated quartz veins, with minor to moderate sericite-limonite alteration of the local host phyllites. This opens up the prospectivity and exploration of the Edjudina field for large-tonnageporphyry-hosted gold deposits (see para 7.0).
Page 4 of 25
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3.1 Follow up drill testing
Due to this highly encouraging drilling at Triumph, infill drilling will be conducted during future campaigns. As mineralisation is open in all directions there is considerable potential for extensions to the Triumph lode. Future drilling will test these extensions and explore for possible large-scaleporphyry-style mineralisation.
Figure 3: Triumph Prospect Plan View - Phase 6 Drilling Results Highlights
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GIBB River Diamonds Ltd. published this content on 12 January 2022 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 13 January 2022 00:00:09 UTC.