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DART MINING NL — Capital/Financing Update 2009
Sep 8, 2009
64792_rns_2009-09-08_51ac0e51-8ac8-4169-b71e-ef752f050408.pdf
Capital/Financing Update
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ASX RELEASE 9 SEPTEMBER 2009
ASX CODE DTM
MOUNTAIN VIEW DRILLING CONFIRMS CONTINUITY OF GOLD MINERALISATION
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Deep drilling confirms main lens structure continuity below 150m from surface
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Drill testing of the western anomaly highlights a new lode structure to the east
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Three vertically and laterally stacked mineralised structures now confirmed
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Continuity of the main lens structure with additional mineralised structures now warrants a first pass geophysical program along the line of the lodes
Mountain View Prospect – RC Drill Program Completion
An initial update of the RC drilling program (DMVRC01 – 05) at the Mountain View Prospect was reported on the 30 July 2009. Highlights included confirmation of the high grade gold lode extending to the north by some 50m with intersections including 6m @ 7.8 g/t Au (including 2m @ 19.3 g/t Au) – DMVRC04 and 4m @ 8.72 g/t Au (including 1m @ 18.75 g/t Au) – DMVRC05 - Table 1 & Figure 1. Deeper drilling has subsequently been completed with assay results now to hand – Table 1.
The deeper drilling targeted the Main Lens (DMVRC07 – 10) and the southern down dip continuation of the Western Anomaly (DMVRC11 – 12) – Figure 1. Drill holes intersecting the Main Lens have highlighted the continuous nature of the structure with depth down dip and along strike. The structure shows silica and sulphide alteration over down hole widths up to 5m (DMVRCC01 & 09) with highly anomalous intercepts (Table 1). The deepest drill hole (DMVRC08) shows 1m @ 2.47 g/t Au from some 75m below the historic Lower Adit level workings (Figure 1). Based on grade distribution determined by very close spaced drilling of the outcropping high grade Main Lens (Figure 1) the wide spaced drilling has highlighted future drill targets to test for high grade gold within the established mineralised structure.
Intersections of 5m @ 0.91 g/t Au (DMVRC01) and 4m @ 0.86 g/t Au (DMVRC10) may represent gold mineralisation developed peripheral to higher grade sulphide lodes within the mineralised channel. Drill hole DMVRC07 was abandoned at 73m due to bit failure down hole and DMVRC12 had to be abandoned before the Western Anomaly target depth due to strong water inflows and inadequate air pressure. All other holes have been completed to target depth and have intersected the gold mineralisation as predicted by the pre-drill geological model.
The drill density of the wide spaced RC drill program was inadequate to fully test the channel for the size of a typical high grade gold zone such as the one already identified (Figure 1). The aim of the program was to determine if the mineralised structure persisted with depth and strike and also to test for additional blind lodes. As such the program has been very successful and based on the continuity of the mineralised structure and the intersection of an additional high sulphide lode (DMVRC12) Dart considers that a first pass geophysical program along the line of the lodes to assist with targeting future drilling is warranted.
Geological interpretation of the drilling and additional mapping has been incorporated into the geological model and shows the Glendart Syncline is a complex series of isoclinal folds traversed by the main Mountain View fault structure. The fault is interpreted to interact with the fold structures in a predictable manner such that the dip of the fault changes when passing through the axes of the folds to form a series of dilation sites and lode lenses (Figure 2). These lode splays appear to terminate up dip and along strike (forming lenses) and as such can be “blind” at surface. Drill hole DMVRC12
Level 3, 15 Queen Street Melbourne, Victoria, 3000, Australia TELEPHONE +61 3 9621 1322 FACSIMILE +61 3 9621 1544 EMAIL [email protected] WEB www.dartmining.com.au ACN 119 904 880
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Targeted the down dip extension of the Western Anomaly and intersected a new Lode structure in the hanging wall to the east of the interpreted position of the Western Anomaly mineralisation. This is the first intersection of this gold mineralisation and indicates the geological model consisting of vertical and lateral repetitions of mineralised structures remains valid and warrants further testing (Figure 2).
Figure 1: Mountain View Project – showing assay results.
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Table 1: Significant Intersections – RC Drill Program (July – August 2009).
| **able 1:**Sig | nificant | Intersections | – RC Dri | ll Program | (July – A | ugust | 2009). | |
|---|---|---|---|---|---|---|---|---|
| Hole No. | Hole Dip | Hole Azimuth(MGA Grid) | MGAEast(m) | MGANorth(m) | SampleInterval(m) | From(m) | Significant IntersectionsCutoffs: 0.1g/t Au | TotalDepth(m) |
| DMVRC01 | -84 | 270 | 567,478 | 5,960,970 | 1 | 80 | 5m @ 0.91 g/t Au | 127 |
| DMVRC02 | -45 | 270 | 567,475 | 5,960,970 | 1 | 34 | 2m @ 0.80 g/t Au | 59 |
| DMVRC03 | -60 | 270 | 567,476 | 5,960,970 | 1 | 47 | 1m @ 2.02 g/t Au | 59 |
| DMVRC04 | -70 | 270 | 567,460 | 5,960,948 | 1 | 27 | 6m @ 7.8 g/t Au | 42 |
| 28 | Including 2m @ 19.3 g/t Au | |||||||
| DMVRC05 | -77 | 270 | 567,461 | 5,960,948 | 1 | 37 | 4m @ 8.72 g/t Au | 63 |
| 39 | Including 1m @ 18.75 g/t Au | |||||||
| DMVRC06 | -75 | 268 | 567,463 | 5,960,922 | 1 | 36 | 2m @ 4.57 g/t Au | 57 |
| DMVRC07 | Hole abandoned-Bit Failure | |||||||
| DMVRC08 | -75 | 255 | 567,509 | 5,960,914 | 1 | 116 | 1m @ 2.47 g/t Au | 129 |
| DMVRC09 | -59 | 262 | 567,508 | 5,960,914 | 1 | 79 | 5m @ 0.39 g/t Au | 90 |
| DMVRC10 | -43 | 290 | 567,574 | 5,960,956 | 1 | 133 | 4m @ 0.86 g/t Au | 160 |
| DMVRC11 | -58 | 274 | 567,464 | 5,960,720 | 1 | 50 | 3m @ 0.54 g/t Au | 65 |
| DMVRC12 | -76 | 277 | 567,483 | 5,960,720 | 1 | 76 | [email protected]/t Au | 98 |
NOTE:
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1 Drill hole collars are accurate to within 5m using GPS control and laser survey equipment.
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2 Samples were collected at 1m intervals at the drill rig and split by a 75:25 Riffel Splitter.
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3 Gold results are based on ALS Chemex technique Au-AA25 (30g Charge).
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4 Pb & As are based on ALS Chemex technique ME-ICP41
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5 High Grade Pb is based on ALS Chemex technique Pb-OG46 6 Significant Intersections based on length weighted downhole average grade (Sample interval > 0.1 g/t Au) - True Width varies.
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Figure 2: Conceptual Geological Model – Vertically and Laterally Stacked Mineralised Structures – Glendart Syncline.
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Background
In the Dart Goldfield, the Mountain View line of lode extends over some 5 kilometres. Detailed mapping and sampling over 2 kilometres of the strike centred on the main historic workings has identified a series of gold lenses at Mountain View consisting of the New Discovery, Main Lens, Western Anomaly, Golden Bell, South Golden Bell and other minor historic pits. Limited drilling to date on 2 of the lenses has identified high gold grade in the Main Lens within broad low grade mineralised envelopes.
For further information visit our website at www.dartmining.com.au or contact:
John Quayle, CEO Ph: +61 (0) 3 9621 1322
COMPETENT PERSON’S STATEMENT
Information in this report that relates to a statement of exploration results of the Company is based on information compiled by Dean Turnbull B.App.Sc (Hons), M. AIG. Mr Turnbull is a Director of Dart Mining NL and has sufficient experience relevant to the style of mineralisation and type of deposits under consideration and to the activity undertaken. He is qualified as a competent person as defined in the 2004 Edition of the “Australasian Code for Reporting of Mineral Resources and Ore Reserves” (or “JORC Code”). Mr Turnbull consents to the inclusion of this information in the form and context in which it appears in this report.
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