Trident Resource drilling delivers further high-grade gold!
Trident and Trident West Resources to be finalised and incorporated into Mine Planning.
Further high-grade gold intersections delivered from the final six holes from recently completed Resources drilling at Trident, including:
🔴 3 metres at 7.62 grams of gold per tonne from 134 metres and 6 metres at 3.3 grams of gold per tonne from 143 metres in VTRRC0045.
🔴 2 metres at 8.67 grams of gold per tonne from 118 metres in VTRRC0047 within a broad mineralised zone.
These intersections were produced from a previously under-drilled zone, between the Trident West open-pit target and the high-grade Trident Main underground mine.
These latest drilling results confirm continuity of mineralisation to the in the "linking" zone between Trident West and the high-grade Trident Main Gold Deposit. For more information, see ASX Announcement.
The Trident gold deposit has a central high-grade zone located between 150 and 200 metres below surface.
Vango Mining Limited reports further high-grade gold intersections at the Trident West gold deposit, at the Trident Gold Project on the company's 100%-owned Marymia Gold Project in the mid-west region of Western Australia. These reports include:
🔴 11 metres at 5.66 grams of gold per tonne from 67 metres including 2 metres at 14.17 grams of gold per tonne and 3 metres at 9.44 grams of gold per tonne in VTRRC0041.
🔴4 metres at 4.22 grams of gold per tonne from 87 metres, including 1 metre at 8.01 grams of gold per tonne in VTRRC0040.
Four geotechnical drill holes and one metallurgical hole also completed at Trident West.
New drilling intersections and geotechnical information to be incorporated into resource estimate for open-pit and portal planning to access the Trident high-grade underground zone.
Metallurgical test-work on Trident West drill core initiated to determine leach recovery and crushing/grinding parameters for incorporation into the stand-alone processing plant study.
Vango Mining Limited aims to add further resources to the Project's development pipeline and develop it into a significant, stand-alone, gold mining and processing operation.
The new gold intersections were from five reverse circulation (RC) drill holes for a total of 520 metres, which formed part of the open-pit resource definition drilling of the Trident West gold deposit.
Trident West is the up-plunge, at surface, expression of the high-grade Trident main gold deposit.
The key intersections produced from this five TC hole programme are as follows (see Figure 1 in the ASX Announcement for the locations of the drilling and Figures 2 and 3 for cross sections through the mineralisation):
🔴11 metres at 5.66 grams of gold per tonne from 67 metres including 2 metres at 14.17 grams of gold per tonne and 3 metres at 9.44 grams of gold per tonne in VTRRC0041.
🔴4 metres at 4.22 grams of gold per tonne from 87 metres, including 1 metre at 8.01 grams of gold per tonne in VTRRC0040.
🔴2 metres at 2.87 grams of gold per tonne from 19 metres and 1 metre at 5.35 grams of gold per tonne from 73 metres in VTRRC0039.
Trident's high-grade core of mineralisation is associated with a steepening and thickening of the mineralised zone referred to as a roll-over or 'ramp' in the ultramafic schist host unit, within a larger package of moderate to high metamorphic grade ultramafic rocks.
A maiden resource estimate for Trident West is in progress, as is an updated resource estimate for the Trident gold deposit. A further six RC holes for a total of 1,192 metres have also been completed to the east of the Trident West open-pit target to test the "linking" zone between Trident West and the Trident Main gold deposit. Following the results of these holes, expected shortly, the Trident Main resource estimate will be finalised, which will facilitate the completion of the underground mine planning at Trident Main.
Geotechnical and metallurgical drilling
In addition to the resource definition drilling, Vango Mining Limited has completed a programme of geotechnical and metallurgical drilling at Trident West. This drilling is of significant importance and the results will provide key data for incorporation into mine planning at Trident. For more information, see ASX Announcement dated 22 January 2019.
Vango Mining's 2017-2018 drilling programmes of the Trident deposit intersected significant high-grade gold intersections which confirmed previous drilling results (and included a predominance of reverse circulation (RC) drilling), and also extended the high-grade zones.
15 August 2018
High-grade gold intersections extend Trident to 500 metres west of main drilling area. This highlights the potential for a second high-grade gold system at the Trident gold deposit:
🔴 VTRRCD0028: 3.5 metres at 10.9 grams of gold per tonne from 349 metres including 1.5 metres at 22.1 grams of gold per tonne from 350 metres;
🔴 VTRDD0030: 2 metres at 4.9 grams of gold per tonne from 37 metres and 3.4 metres at 3.4 grams of gold per tonne from 68.6 metres including 1 metre at 7.2 grams of gold per tonne; and
🔴 VTRRC0031: 6 metres at 3.7 grams of gold per tonne from 56 metres including 1 metre at 16.2 grams of gold per tonne from 57 metres.
Intersection in hole VTRRCD0028 confirms high‐grade gold mineralisation at Trident now extends at least 500 metres to the west (down‐dip) of the Deposit’s drill‐defined high‐grade zone.
Biotite alteration and trace gold in VTRRCD0029 confirms mineralised system to 1000 metres down dip from surface – indicating potential for deep extensions of the Trident gold mineralised system.
This programme was designed to test the deeper parts of the Trident mineralisation system, as well as further defining the near surface oxide material on the western side of the deposit.
Mining is undertaking a deeper, extensional drilling programme at Trident, designed to test for repetitions at depth plus extensions to the west, of the deposit’s very high-grade gold mineralised core.
The drilling has intersected a 12-metre thick zone of the mineralised ultramafic rocks that host the Trident deposit from ~600 metres below surface (in drillhole VTRRCD0029), approximately 750 metres (and 1km down-dip from surface) west of the current very high-grade drill-defined core at Trident.
This confirms that the mineralised system now extends to at least 1km in (down-dip) length, effectively tripling the size of the targeted zone at Trident.
Extensional drilling intersects a 12-metre thick zone of mineralised ultramafic of the Trident gold deposit at a distance of 1km (down-dip) west of the drill-defined high-grade zone at Trident;
Two further extensional holes drilled ~500 metres (down-dip) west of the Trident high-grade core also intersect targeted ultramafic zone;
Together, these Intersections confirm that the Trident mineralised system now extends at least 1km in length, and have effectively tripled the size of the target zone at Trident.
Three deeper pre‐collared diamond drill holes are being drilled to test for down‐dip repeats of the Trident flexure or “ramp” structure that hosts the majority of the high‐grade gold mineralisation intersected to date at Trident.
The initial drilling will essentially be “stratigraphic”, targeting the shallow dipping ultramafic contact below the over‐thrust granite gneiss on 400 metres step‐outs from the high‐grade core zone.
Previous drilling and magnetic imagery indicates that the ultramafic rocks that host the Trident deposit continue well to the north of Trident and the intersection of continuations of this stratigraphy will open up potential to substantially increase the Trident resource target zone.
Drilling is also testing the western part of the deposit, where the Trident gold mineralisation extends, up‐plunge, to shallow depth.
A combination of five reverse circulation (RC) and one diamond drill hole are designed to further define the mineralization and provide material for metallurgical testing prior to evaluation of this area as a potential box‐cut access point for a decline to access the very‐high grade core of the Trident gold deposit.
Table 1: Proposed drilling at Trident West and Deeps
Above: plan showing Trident gold deposit with geology, drilling completed to date and new drilling planned.
Interpretation of the results of recently completed drilling that tested the high‐grade core of the Trident gold deposit is in progress, to be incorporated into a wire‐framed model for the planned Trident resource upgrade and for mine planning.
28 May 2018
Very high-grade gold intersections from Trident gold deposit. Drilling interactions are as follows:
🔴 7 metres at 18.2 grams of gold per tonne from 218 metres, including 2.02 metres at 44.0 grams of gold per tonne in hole VTRRCD0013.
🔴 3.76 metres at 12.8 grams of gold per tonne from 222.24 metres, including 1 metre at 40.5 grams of gold per tonne in hole VTRRCD0015.
🔴 11.48 metres at 11.5 grams of gold per tonne from 159 metres, including 4 metres at 26.1 grams of gold per tonne in hole VTRRCD0016.
These drilling results will be interpreted and incorporated into a new high‐grade gold resource upgrade for the Trident gold deposit. Mine planning will then be carried out to add Trident to a new, stand‐alone, mining and processing feasibility study plan.
16 May 2018
Results included VTRRCD0008 that produced three high-grade gold interactions within a broad, 71 metres wide, alteration zone with an average grade of 2.1 grams of gold per tonne from 132-203 metres. Highlighted drilling interactions are as follows:
🔴 10 metres at 3.7 grams of gold per tonne from 132 metres, including 1 metre at 21.9 grams of gold per tonne and 2 metres at 5.2 grams of gold per tonne.
🔴 3 metres at 15.3 grams of gold per tonne from 161 metres, including 1.05 metres at 40.3 grams of gold per tonne.
🔴 7.1 metres at 5.2 grams of gold per tonne from 195.9 metres, including
🔴 2.1 metres at 12.4 grams of gold per tonne, and
🔴 2 metres at 4.6 grams of gold per tonne.
Results from two further diamond drill holes VTRRCD0011 and VTRCD0012, and RC drill-hole VTRRC0017 have also been received results as follows:
🔴 3 metres at 5.1 grams of gold per tonne from 199 metres, including 1 metre at 12.3 grams of gold per tonne in hole VTRRCD0011.
🔴 3.86 metres at 3.1 grams of gold per tonne from 200.14 metres, including 1.09 metres at 6.1 grams of gold per tonne in hole VTRRCD0012.
🔴 2 metres at 5.1 grams of gold per tonne from 136 metres in RC drill-hole VTRRC0017.
24 April 2018
Vango Mining Limited received further results from its major resource drilling programme at the Marymia Gold Project in the mid-west region of Western Australia.
The results from the first two Reverse Circulation (RC) holes and the first two Diamond Drill tails at Trident have included outstanding high-grade gold intersections:
🔴 6 metres at 15.37 grams of gold per tonne from 198 metres, including
🔴 4 metres at 22.47grams of gold per tonne from 199 metres; and
🔴 0.39 metres at 101 grams of gold per tonne in hole VTRRCD0007.
🔴 3 metres at 5.76 grams of gold per tonne from 168 metres, including
🔴 1 metre at 14.33 grams of gold per tonne from 169 metres in hole VTRRC0005.
🔴 5 metres at 3.7 grams of gold per tonne from 123-129 metres;
🔴 2 metres at 8.29 grams of gold per tonne from 127-129 metres in hole VTRRC0009.
12 March 2018
Major resource drilling programme with up to 40 reverse circulation and diamond drill-holes planned for 9,100 metres to commence week beginning Monday 12 March 2018.
Vango Mining Limited's drilling programme is designed to expand and develop the high-grade gold resource base to support a stand-alone mining and processing operation at Trident.
This is the Company's largest and most significant drilling and pre-development programme at the Marymia region to date, and it will provide the information necessary to upgrade the high-grade resource base at Trident.
It will also facilitate the expansion of feasibility studies to include a proposed stand-alone mining and processing operation on site.
During the May-June 2017 Trident Drilling Programme, four of the five diamond drilling holes intersected the high-grade gold mineralisation. This expanded the known depth and width of the deposit in the area of the ramp. The two reverse circulation (RC) holes intersected the mineralised zone at a point 500 metres south along the same strike, thus expanding the known-length of the strike.
🔴 11 metres at 20.2 grams of gold per tonne from 161 metres including 2 meters at 93 grams of gold per tonne in hole VTRRCD0001.
🔴 5.75 metres at 4.7 grams of gold per tonne from 192.25 metres including 1.75 metres at 10.48 grams of gold per tonne in hole VTRRCD0003.
🔴 7.15 metres at 17.1 grams of gold per tonne from 193.85 metres including 3.6 metres at 24.4 grams of gold per tonne in hole in VTRDD0003.
🔴 6.5 metres at 7.2 grams of gold per tonne from 199.5 metres including 2 metres at 14.7 grams of gold per tonne in hole VTRDD0001.
The May-July 2017 Trident Drilling Programme comprised five diamond core drill holes for 946 metres plus three RC drilling holes for 747 metres at Vango’s flagship Trident Gold Deposit.
The drilling was designed to test the geometry of the high-grade “ramp” structure or flexure and possibly extend the high-grade zone of mineralisation.
Each completed drill hole from the programme (7 of 9 holes) intersected the high-grade mineralised zone that remains open at depth on all three 40 metres spaced cross sections.