Microsoft Word - 20151005 Drilling Update Final.docx
Level 1, 37 Ord Street, West Perth WA 6005
[email protected]
ed +61 8 6500 9200
ease ABN: 30 068 263 098
Heron Resources Limit
ASX/TSX Rel
ASX:HRR/TSX:HER
Issued Shares 415M Share Price $0.10
Market Cap $41.5M Cash (31 Aug 2015) $28.2M
Investments $ 2.3M
Total C+I $30.5M
7 October 2015
Woodlawn Drilling Update:
27.7m at 23.4% ZnEq from 401m Depth
-
Recent assays received from Kate Lens drilling:
o 27.7m @ 23.4% ZnEq1 from 401m (6.9% Zn, 3.9% Cu, 1.5% Pb, 1.0g/t Au, 75g/t Ag), WNDD0046
o 3.9m @ 26.9% ZnEq from 408m (8.5% Cu, 0.1g/t Au, 8.9g/t Ag), WNDD0053
o 6.4m @ 9.0% ZnEq from 419m (2.8% Cu, 0.1g/t Au, 3.7g/t Ag), WNDD0053
-
Recent assays received from shallow G Lens drilling:
o 4.7m @ 30.4% ZnEq from 40m (3.9% Zn, 5.5% Cu, 2.3% Pb, 1.6g/t Au, 203g/t Ag), WNDD0057
o 4.7m @ 22.4% ZnEq from 52m (6.1% Zn, 2.3% Cu, 4.0% Pb, 1.4g/t Au, 153g/t Ag), WNDD0058
Heron Resources Limited (ASX:HRR TSX:HER, 'Heron' or the 'Company') is pleased to provide a summary of recent results from the Phase II resource definition drilling program at its wholly owned Woodlawn Project, located 250km south-west of Sydney, New South Wales, Australia.
Phase II Drilling
The objective of the Phase II drilling is to delineate sufficient Measured and Indicated Resources which can be converted into an initial underground Mineral Reserve within the Feasibility Study sufficient to secure commercial bank debt project financing, and allow the project to proceed to mine construction. The Phase II drilling program (comprising approximately 19,000m of diamond drilling) at Woodlawn is now 80% completed, with 15,000 metres drilled, reflecting on-time and on- budget progress.
In undertaking this program, the Company has focused on minimising project start-up time and capital costs by targeting relatively shallow depth positions within the numerous lenses. In addition, shallow mineralised positions that have the potential to provide ready-access production in the early phase of the planned underground operations are also being tested.
Kate Lens - recent assays (refer Figure 1 for locations):
27.7m @ 23.4% ZnEq from 401m (6.9% Zn, 3.9% Cu, 1.5% Pb, 1.0g/t Au, 75g/t Ag), WNDD0046
3.9m @ 26.9% ZnEq from 408m (8.5% Cu, 0.1g/t Au, 8.9g/t Ag), WNDD0053
6.4m @ 9.0% ZnEq from 419m (2.8% Cu, 0.1g/t Au, 3.7g/t Ag), WNDD0053
The result in WNDD0046 confirms the width and high-grade tenor of the central upper part of the Kate Lens, where the Phase II drilling has identified a consistent thickening of the lens within a channel like structure. This consistent thickening of the lens over some 120m of strike will have a positive impact on the overall tonnages estimated for the Kate Lens and provide a thick zone for future mining.
The result in WNDD0053 is highly encouraging and better than anticipated from the initial logging of the hole, which was positioned to test for the limits of the lens in this direction; however it instead intercepted a copper-rich northern extension to the Kate Lens which is likely to indicate further tonnages in this direction. Down-hole electro-magnetic (DHEM)
ASX/TSX Release Heron Resources Limited 1 of 11
1 Zn equivalents (ZnEq) in this release are based on the formula: Zn(%) + 0.81 x Pb(%) + 3.12 x Cu(%) + 0.86 x Au(g/t) + 0.03 x Ag(g/t). All these metals are expected to be recoverable. Refer to the announcement of 22 April 2015 entitled 'Preliminary Economic Assessment Delivers Strong Business Case for the Woodlawn Zinc-Copper Project' for further information.
surveying of this hole supports the idea that the lens plunges to the north between W060 and WNDD0034 and this position is being assessed for future drilling.
G Lens - recent assays:
4.7m @ 30.4% ZnEq from 40m (3.9% Zn, 5.5% Cu, 2.3% Pb, 1.6g/t Au, 203g/t Ag), WNDD0057
4.7m @ 22.4% ZnEq from 52m (6.1% Zn, 2.3% Cu, 4.0% Pb, 1.4g/t Au, 153g/t Ag), WNDD0058
These two results come from the same section of G Lens and confirm the shallow and high-grade tenor of mineralisation here and which is being targeted for the early part of the life of the mine. The mineralisation is not oxidised, but has experienced some weathering and will undergo metallurgical test work to optimise process plant recoveries. The lens in this position has a strike length of some 30m and extends down plunge for some 70m.
Kate Extension Target
A further review of the DHEM models for the previously reported Kate extension position (Figure 2) has reinforced the view that a significant conductor exists with dimensions in order of 150m long and 200m deep, but with thickness not defined. The conductance of the modelled plate at between 12-35 Siemans (S) is lower than that for Kate Lens (50-80S) and the conductive body is off-set into the stratigraphic footwall by about 60m relative to the Kate Lens. This lower conductance suggests the possibility of lower copper content, which typically correlates with zinc-rich mineralisation in the district.
A program of up to three holes, utilising drillhole wedging, is currently being designed to intersect the modelled plate and provide first pass indication of the tenor of the mineralisation.
Forward program
The Company continues to make excellent progress with the Phase II drilling program and future work will focus on:
Kate Lens - a further infill hole targeting the southern copper zone.
E, G and H Lens - a number of shallow holes to covert areas to Indicated Mineral Resource status.
Kate Extension Target - finalisation of drill plans to initially test this new high priority target.
About Heron Resources Limited:
Heron is engaged in the exploration and development of base and precious metal deposits in Australia. Heron's primary development project is the high grade Woodlawn Zinc-Copper Project located 250km southwest of Sydney, New South Wales.
Mr Wayne Taylor, Mr Jon Snowball
Managing Director and Chief Executive Officer: FTI Consulting
Tel: +61 8 6500 9200 Tel: +61 2 8298 6100 or +61 477 946 068
Email: [email protected] Email: [email protected]
Canada:
ASX/TSX Release Heron Resources Limited
13968376/2
Tel: +1 905 727 8688 (Toronto)
Figure1: Kate Lens Long-Section looking east with recent intercepts shown. Down-hole intercept thickness and ZnEq grade contoured to show relative accumulation of metals across the lens. Current resource outline is shown for reference.
ASX/TSX Release Heron Resources Limited
13968376/2
Figure2: Oblique Cross Section through the Woodlawn system showing the recently modelled DHEM plates and target zones.
Technical Information
ASX/TSX Release Heron Resources Limited
13968376/2
Table 1: Drill hole details for diamond drill holes completed as part of the Phase II drill campaign.
Hole No.
|
WMG
East (m)
|
WMG
North (m)
|
WMG RL (m)
|
Surface Dip
|
WMG Surface Azimuth
|
Depth (m)
|
Target
|
WNDD0020W1
|
9,407
|
18,951
|
2,823
|
-53
|
77
|
444.7
|
South EM target
|
WNDD0021
|
9,013
|
19,599
|
2,787
|
-85
|
130
|
319.1
|
Lisa Lens down dip
|
WNDD0022
|
9,013
|
19,599
|
2,787
|
-78
|
100
|
276.0
|
Lisa Lens north
|
WNDD0023
|
9,237
|
19,227
|
2,798
|
-65
|
60
|
240.0
|
E Lens extension
|
WNDD0024
|
9,285
|
19,327
|
2,799
|
-60
|
90
|
82.5
|
G Lens extensions
|
WNDD0025
|
9,299
|
19,261
|
2,801
|
-60
|
89
|
218.4
|
E Lens extensions
|
WNDD0026
|
9,145
|
19,407
|
2,792
|
-56
|
85
|
150.0
|
H Lens up-dip
|
WNDD0027
|
9,204
|
19,364
|
2,795
|
-81
|
85
|
44.9
|
H Lens up-dip
|
WNDD0028
|
9,225
|
19,197
|
2,796
|
-58
|
83
|
265.5
|
G Lens extension
|
WNDD0029
|
9,052
|
19,298
|
2,791
|
-55
|
62
|
373.7
|
Kate Lens up-dip
|
WNDD0030
|
8,882
|
19,379
|
2,793
|
-80
|
62
|
699.6
|
Kate Lens down plunge
|
WNDD0031
|
8,990
|
19,399
|
2,792
|
-70
|
71
|
442.6
|
Kate Lens extension north
|
WNDD0032
|
9,023
|
19,338
|
2,790
|
-70
|
78
|
447.5
|
Kate Lens down dip
|
WNDD0033
|
9,053
|
19,297
|
2790
|
-58
|
53
|
260.5
|
Kate Lens up dip
|
WNDD0034
|
8,990
|
19,399
|
2792
|
-74
|
62
|
167.1
|
Kate Lens north
|
WNDD0035
|
9,053
|
19,297
|
2790
|
-69
|
71
|
447.0
|
Kate Lens down-dip
|
WNDD0036
|
9,012
|
19,598
|
2787
|
-80
|
118
|
290.0
|
Lisa Lens
|
WNDD0037
|
9,024
|
19,332
|
2790
|
-62
|
58
|
420.0
|
Kate Lens up dip
|
WNDD0038
|
9,053
|
19,296
|
2790
|
-64
|
76
|
460.0
|
Kate Lens South
|
WNDD0039
|
9,051
|
19,297
|
2,791
|
-56
|
68
|
381.3
|
Kate Lens South Infill
|
WNDD0040
|
9,161
|
19,457
|
2,789
|
-55
|
90
|
120.8
|
H Lens north extension
|
WNDD0041
|
9,203
|
19,379
|
2,795
|
-76
|
50
|
130.0
|
H Lens up dip
|
WNDD0042
|
9,254
|
19,201
|
2,799
|
-62
|
65
|
119.9
|
G2 Lens
|
WNDD0043
|
9,159
|
19,248
|
2,795
|
-60
|
35
|
196.1
|
G Lens middle
|
WNDD0044
|
9,134
|
19,409
|
2,791
|
-65
|
96
|
140.1
|
H Lens down dip
|
WNDD0045
|
9,235
|
19,232
|
2,798
|
-73
|
92
|
78.5
|
G2 Lens
|
WNDD0046
|
8926
|
19396
|
2793
|
-59
|
78
|
451.1
|
Kate Lens north
|
WNDD0047
|
9182
|
19412
|
2793
|
-59
|
90
|
116
|
H Lens north
|
WNDD0048
|
9145
|
19410
|
2793
|
-70
|
78
|
135.6
|
H Lens
|
WNDD0049
|
9146
|
19410
|
2793
|
-55
|
92
|
145.2
|
H Lens middle
|
WNDD0050
|
9146
|
19410
|
2793
|
-61
|
99
|
130.4
|
H Lens middle
|
WNDD0051
|
9144
|
19410
|
2793
|
-67
|
117
|
140.1
|
H Lens middle
|
WNDD0052
|
9145
|
19410
|
2792
|
-56
|
110
|
135.4
|
H Lens upper south
|
WNDD0053
|
8879
|
19380
|
2793
|
-58
|
71
|
501
|
Kate Lens north
|
WNDD0054
|
9240
|
19140
|
2800
|
-65
|
80
|
207.9
|
Southern portal target
|
WNDD0055
|
9246
|
19278
|
2798
|
-69
|
60
|
120
|
G Lens
|
WNDD0056
|
9248
|
19279
|
2798
|
-60
|
65
|
110.2
|
G Lens
|
WNDD0057
|
9293
|
19308
|
2800
|
-60
|
65
|
87.5
|
G Lens
|
WNDD0058
|
9292
|
19308
|
2800
|
-80
|
48
|
87.8
|
G Lens
|
WNDD0059
|
9299
|
19260
|
2801
|
-58
|
54
|
165.7
|
E Lens
|
WNDD0060
|
8976
|
19589
|
2792
|
-61
|
125
|
463.4
|
H Lens and Kate Lens
|
WNDD0061
|
9299
|
19261
|
2800
|
-63
|
79
|
201.9
|
E Lens
|
WNDD0062
|
9333
|
19242
|
2804
|
-65
|
50
|
171.7
|
E Lens
|
WNDD0063
|
9025
|
19333
|
2790
|
-74
|
80
|
211.4
|
Kate Lens down dip
|
WNDD0064
|
9262
|
19320
|
2798
|
-69
|
80
|
90.8
|
G Lens
|
WNDD0065
|
9262
|
19320
|
2798
|
-55
|
65
|
81.4
|
G Lens
|
WNDD0066
|
9255
|
19202
|
2799
|
-72
|
42
|
115
|
G2 Lens
|
WNDD0067
|
9255
|
19202
|
2799
|
-55
|
51
|
103.3
|
G2 Lens
|
WNDD0068
|
9255
|
19202
|
2799
|
-66
|
105
|
123
|
G2 Lens
|
WNDD0069
|
9266
|
19196
|
2799
|
-50
|
64
|
95
|
G2 Lens
|
WNDD0070
|
9255
|
19202
|
2799
|
-52
|
102
|
99.2
|
G2 Lens
|
WNDD0071
|
9025
|
19333
|
2790
|
-70
|
64
|
436.4
|
K Lens lower infill
|
WNDD0073
|
9050
|
19297
|
2790
|
-62
|
66
|
420.6
|
K Lens upper infill
|
WNDD0074
|
9027
|
19333
|
2791
|
-61
|
57
|
417.8
|
K lens above hole WNDD0011
|
WNDD0075
|
9151
|
19302
|
2791
|
-73
|
77
|
399.7
|
G lens between WNDD0010
|
WNDD0076
|
9338
|
19268
|
2804
|
-58
|
63
|
158.5
|
E lens infill
|
WNDD0077
|
9337
|
19268
|
2804
|
-71
|
61
|
168.3
|
E lens above WNDD0012
|
WNDD0078
|
9397
|
19275
|
2805
|
-55
|
60
|
92.8
|
E lens top of the resource
|
WNDD0079
|
9154
|
19455
|
2789
|
-78
|
120
|
150
|
H lens north of existing stopes
|
WNDD0080
|
9362
|
19237
|
2805
|
-66
|
56
|
162.7
|
E lens top of the resource
|
WNDD0081
|
9154
|
19455
|
2789
|
-67
|
123
|
135.3
|
H lens north of existing stopes
|
WNDD0082
|
9419
|
19286
|
2804
|
-55
|
80
|
63.6
|
E lens top of the resource
|
Notes: WMG = Woodlawn Mine Grid
Table 2: Details of massive sulphide intercepts and reported grades from the Phase II drill campaign
Hole No
|
From (m)
|
To (m)
|
Downhole Width (m)
|
True Width (m)
|
ZnEq (%)
|
Zn (%)
|
Cu (%)
|
Pb (%)
|
Au (g/t)
|
Ag (g/t)
|
WNDD0023*
|
166.8
|
170
|
3.2
|
2.6
|
5.3
|
0.1
|
1.7
|
0
|
0.1
|
5.9
|
WNDD0024*
|
30
|
33
|
3
|
2.4
|
37.6
|
8.5
|
3.5
|
5.2
|
6.3
|
160.6
|
WNDD0025*
|
151.3
|
153.8
|
2.5
|
2.0
|
11.7
|
1.9
|
1.2
|
0.2
|
3.4
|
16.5
|
WNDD0026*
|
108.7
|
110.4
|
1.7
|
1.0
|
39.8
|
3.5
|
6.8
|
4.9
|
3.9
|
213
|
WNDD0027*
|
103.8
|
104.6
|
0.75
|
0.6
|
51.4
|
5.6
|
8.1
|
6.8
|
3.6
|
398
|
WNDD0029*
|
324.3
|
329.1
|
4.8
|
4.0
|
11
|
7.6
|
0.4
|
0.9
|
0.7
|
37.4
|
WNDD0029*
|
340
|
347.15
|
7.1
|
6.0
|
40.6
|
16.9
|
0.9
|
11.3
|
3.5
|
254.1
|
WNDD0031*
|
383.2
|
403.7
|
20.5
|
16.4
|
18.4
|
8.1
|
2.4
|
2.9
|
0.8
|
68
|
WNDD0032*
|
405.2
|
417.3
|
12.1
|
9.7
|
12.2
|
4.7
|
2.2
|
0.8
|
0.8
|
22.2
|
WNDD0033*
|
316.7
|
319.3
|
2.6
|
2.1
|
7.4
|
1.2
|
0.7
|
1.4
|
0.8
|
76.5
|
WNDD0033*
|
326
|
346.7
|
20.7
|
16.6
|
25.8
|
14.1
|
1
|
4.7
|
1.4
|
120.4
|
WNDD0033*
|
351.1
|
360
|
8.9
|
7.1
|
18.9
|
5.8
|
1.9
|
2.6
|
2.7
|
90.1
|
WNDD0035*
|
389.7
|
413
|
23.3
|
18.6
|
6.8
|
0.3
|
1.9
|
0
|
0.5
|
6.3
|
WNDD0037*
|
347.5
|
383
|
35.5
|
28.4
|
11.2
|
5.1
|
0.8
|
1.3
|
0.9
|
61.7
|
WNDD0038*
|
376.3
|
396.0
|
19.8
|
15.8
|
9.9
|
0.7
|
2.6
|
0.2
|
0.7
|
8.0
|
WNDD0039*
|
351.3
|
356.8
|
5.4
|
4.3
|
27.7
|
15.1
|
1.5
|
6
|
1
|
70.3
|
WNDD0042*
|
77.6
|
83.2
|
5.7
|
4.6
|
12.3
|
5.9
|
0.2
|
3.9
|
0.4
|
73.3
|
WNDD0044*
|
116.8
|
117.8
|
1.1
|
0.9
|
52.2
|
24
|
4.3
|
12.9
|
1.5
|
97.2
|
WNDD0045*
|
94.6
|
97.2
|
2.6
|
2.1
|
7.4
|
3.6
|
0.1
|
2.4
|
0.2
|
49.6
|
WNDD0046
|
400.6
|
428.3
|
27.7
|
22.16
|
23.4
|
6.9
|
3.9
|
1.5
|
1
|
74.6
|
WNDD0050*
|
103.1
|
108.4
|
5.3
|
4.2
|
10.1
|
1.4
|
1.6
|
0.9
|
1.3
|
62.7
|
WNDD0053
|
408.0
|
411.9
|
3.9
|
3.12
|
26.9
|
0
|
8.5
|
0
|
0.1
|
8.9
|
WNDD0053
|
419.3
|
425.7
|
6.4
|
5.12
|
9.0
|
0
|
2.8
|
0
|
0.1
|
3.7
|
WNDD0054
|
83.6
|
90.4
|
6.8
|
5.44
|
4.1
|
1.8
|
0.1
|
1.1
|
0.4
|
29.2
|
WNDD0054
|
106.0
|
112.8
|
6.8
|
5.44
|
4.5
|
2.8
|
0.5
|
0.1
|
0
|
0.7
|
WNDD0057
|
40.4
|
45.1
|
4.7
|
3.76
|
30.4
|
3.9
|
5.5
|
2.3
|
1.6
|
203
|
WNDD0058
|
52.4
|
57.1
|
4.7
|
3.76
|
22.4
|
6.1
|
2.3
|
4
|
1.4
|
153.3
|
ASX/TSX Release Heron Resources Limited
13968376/2
Notes: True width is an estimate of the actual thickness of the intercept based on interpreted lens orientation (approximately 80% to 90% of downhole width, with 80% used in this table as a general guide); grades are weighted average grades, weighted by length of
samples intervals downhole, which are nominally 1 metre. No weighting was applied for differences in specific gravity which is most cases are relatively low. * = Previously reported results.
Compliance Statement (JORC 2012 and NI43-101)
The technical information in this news release relating to the exploration results at the Woodlawn Project is based on information compiled by Mr David von Perger, who is a Member of the Australian Institute of Mining and Metallurgy (Chartered Professional - Geology). Mr von Perger is a full time employee of Heron Resources Limited and has sufficient experience, which is relevant to the style of mineralisation and type of deposit under consideration and to the activity which he is undertaking to qualify as a Competent Person as defined in the 2012 edition of the 'Australasian Code for Reporting of Exploration Results and 'qualified person' as this term is defined in Canadian National Instrument 43-101 ('NI 43-101'). Mr von Perger has reviewed this press release and consents to the inclusion in this news release of the information in the form and context in which it appears.
CAUTIONARY NOTE REGARDING FORWARD-LOOKING INFORMATION
This news release contains forward-looking statements and forward-looking information within the meaning of applicable Canadian securities laws, which are based on expectations, estimates and projections as of the date of this news release. This forward-looking information includes, or may be based upon, without limitation, estimates, forecasts and statements as to management's expectations with respect to, among other things, the timing and amount of funding required to execute the Company's exploration, development and business plans, capital and exploration expenditures, the effect on the Company of any changes to existing legislation or policy, government regulation of mining operations, the length of time required to obtain permits, certifications and approvals, the success of exploration, development and mining activities, the geology of the Company's properties, environmental risks, the availability of labour, the focus of the Company in the future, demand and market outlook for precious metals and the prices thereof, progress in development of mineral properties, the Company's ability to raise funding privately or on a public market in the future, the Company's future growth, results of operations, performance, and business prospects and opportunities. Wherever possible, words such as 'anticipate', 'believe', 'expect', 'intend', 'may' and similar expressions have been used to identify such forward-looking information.
Forward-looking information is based on the opinions and estimates of management at the date the information is given, and on information available to management at such time. Forward-looking information involves significant risks, uncertainties, assumptions and other factors that could cause actual results, performance or achievements to differ materially from the results discussed or implied in the forward-looking information. These factors, including, but not limited to, fluctuations in currency markets, fluctuations in commodity prices, the ability of the Company to access sufficient capital on favourable terms or at all, changes in national and local government legislation, taxation, controls, regulations, political or economic developments in Canada, Australia or other countries in which the Company does business or may carry on business in the future, operational or technical difficulties in connection with exploration or development activities, employee relations, the speculative nature of mineral exploration and development, obtaining necessary licenses and permits, diminishing quantities and grades of mineral reserves, contests over title to properties, especially title to undeveloped properties, the inherent risks involved in the exploration and development of mineral properties, the uncertainties involved in interpreting drill results and other geological data, environmental hazards, industrial accidents, unusual or unexpected formations, pressures, cave-ins and flooding, limitations of insurance coverage and the possibility of project cost overruns or unanticipated costs and expenses, and should be considered carefully. Many of these uncertainties and contingencies can affect the Company's actual results and could cause actual results to differ materially from those expressed or implied in any forward-looking statements made by, or on behalf of, the Company. Prospective investors should not place undue reliance on any forward-looking information. Although the forward-looking information contained in this news release is based upon what management believes, or believed at the time, to be reasonable assumptions, the Company cannot assure prospective purchasers that actual results will be consistent with such forward-looking information, as there may be other factors that cause results not to be as anticipated, estimated or intended, and neither the Company nor any other person assumes responsibility for the accuracy and completeness of any such forward-looking information. The Company does not undertake, and assumes no obligation, to update or revise any such forward- looking statements or forward-looking information contained herein to reflect new events or circumstances, except as may be required by law.
ASX/TSX Release Heron Resources Limited
13968376/2
No stock exchange, regulation services provider, securities commission or other regulatory authority has approved or disapproved the information contained in this news release.
Appendix 1 - JORC 2012 Table 1
Section 1 Sampling Techniques and Data
ASX/TSX Release Heron Resources Limited
13968376/2
(Criteria in this section applies to all succeeding sections)
Criteria
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JORC Code explanation
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Commentary
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Sampling techniques
|
-
Nature and quality of sampling (eg cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling.
-
Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used.
-
Aspects of the determination of mineralisation that are Material to the Public Report.
|
-
Samples from the diamond-core holes are being taken from mostly HQ3 and NQ3 sized core and sampled on a nominal 1 metre basis taking into account smaller sample intervals up to geological contacts. The core is cut in half along the core orientation line (where available) and in massive sulphide zones one portion is quartered for assaying, half the core is preserved for metallurgical testing and the remaining quarter is retained as reference material in the core trays. In non-massive sulphide material half core is sampled.
-
These sampling methods are standard industry methods and are believed to provide acceptably representative samples for the type of mineralisation encountered.
|
Drilling techniques
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-
Drill type (eg core, reverse circulation, open- hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details.
|
|
Drill sample recovery
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|
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Logging
|
|
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Sub-sampling techniques and sample preparation
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|
-
All core samples are crushed then pulverised in a ring pulveriser (LM5) to a nominal 90% passing 75 micron. An approximately 250g pulp sub-sample is taken from the large sample and residual material stored.
-
A quartz flush (approximately 0.5 kilogram of white, medium-grained sand) is put through the LM5 pulveriser prior to each new batch of samples. A number of quartz flushes are also put through the pulveriser after each massive sulphide sample to ensure the bowl is clean prior to the next sample being processed. A selection of this pulverised quartz flush material is then analysed and reported by the lab to gauge the potential level of
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ASX/TSX Release Heron Resources Limited
13968376/2
Criteria
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JORC Code explanation Commentary
|
contamination that may be carried through from one sample to the next.
|
Quality of assay data and laboratory tests
|
-
The nature, quality and appropriateness of the Sample preparation and assaying is being conducted assaying and laboratory procedures used and through ALS Laboratories, Orange, NSW with certain whether the technique is considered partial or final analysis of pulps being undertaken at the ALS total. Laboratory in Brisbane QLD.
-
Nature of quality control procedures adopted Gold is determined by 30g fire assay fusion with ICP-
(eg standards, blanks, duplicates, external AES analysis to 1ppb LLD.
laboratory checks) and whether acceptable Other elements by mixed acid digestion followed by
levels of accuracy (ie lack of bias) and ICP-AES analysis.
precision have been established. Laboratory quality control standards (blanks,
standards and duplicates) are inserted at a rate of 5 per 35 samples for ICP work.
|
Verification of sampling and assaying
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-
The verification of significant intersections by An internal review of results was undertaken by
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Documentation of primary data, data entry All field and laboratory data has been entered into an procedures, data verification, data storage industry standard database using a contract (physical and electronic) protocols. database administrator (DBA) in the Company's
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Discuss any adjustment to assay data. Perth office. Validation of both the field and
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Quality control samples from both the Company and the Laboratory are assessed by the DBA and reported to the Company geologists for verification. All assay data must pass this data verification and quality control process before being reported.
-
Some potential cross contamination between a small number of the samples at the pulverising stage in the laboratory was identified in the assay results for WNDD0033, but is at a level that is not expected to affect the overall result. Additional sampling and assaying is being undertaken to check the results of these specific samples.
either independent or alternative company company personnel. No independent verification was
personnel. undertaken at this stage.
laboratory data is undertaken prior to final acceptance and reporting of the data.
|
Location of data points
|
drill holes (collar and down-hole surveys), combination of handheld GPS and licenced surveyor trenches, mine workings and other locations using a DGPS system, with accuracy of about 1m. used in Mineral Resource estimation. The final drill collars are 'picked up' by a licenced
surveyor with accuracy to 1 centimetre.
|
Data spacing and distribution
|
Results. directions from previous intercepts with a nominal
|
Criteria
|
JORC Code explanation
|
Commentary
|
sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied.
|
will be sufficient to provide Mineral Resource estimates in the future.
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Orientation of
|
|
Whether the orientation of sampling achieves
|
|
data in relation
|
unbiased sampling of possible structures and
|
mineralised lenses at a close to perpendicular angle.
|
to geological
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the extent to which this is known, considering
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The mineralised lenses are dipping at approximately
|
structure
|
the deposit type.
|
50-70 degrees to the west and the drilling is
|
approximately at 60 degrees to the east. This will
|
vary from hole to hole.
|
Sample security
|
|
The measures taken to ensure sample security.
|
|
Audits or reviews The results of any audits or reviews of
sampling techniques and data.
|
|
Section 2 Reporting of Exploration Results
ASX/TSX Release Heron Resources Limited
13968376/2
(Criteria listed in the preceding section also apply to this section.)
Criteria
|
JORC Code explanation
|
Commentary
|
Mineral tenement and land tenure status
|
-
Type, reference name/number, location and ownership including agreements or material issues with third parties such as joint ventures, partnerships, overriding royalties, native title interests, historical sites, wilderness or national park and environmental settings.
-
The security of the tenure held at the time of reporting along with any known impediments to obtaining a licence to operate in the area.
|
-
The Woodlawn project is located 200km south-west of Sydney in the state of New South Wales. The area is near the top of the Great Australian Dividing range and has an elevation around 800m above sea-level. The mineral and mining rights to the project are owned 100% by the Company through the granted, special mining lease 20 (SML20). The lease has been renewed to the 16 November 2029.
-
The project area is on private land owned by Veolia who operate a waste disposal facility that utilises the historical open-pit void. An agreement is in place with Veolia for the Company to purchase certain sections of this private land to facilitate future mining and processing activities. A cooperation agreement is also in place between Veolia and the Company that covers drilling and other exploration activities in the area.
|
Exploration done by other parties
|
|
|
ASX/TSX Release Heron Resources Limited
13968376/2
Criteria
|
JORC Code explanation
|
Commentary
|
were then acquired by TriAusMin Ltd in 1999 who conducted studies on a tailings re-treatment process and further underground operations. Heron took 100% ownership of the project in August 2014 following the merger of the two companies. Some 980 surface and underground drill holes have been completed on the project to date and various studies undertaken.
|
Geology
|
|
|
The Woodlawn deposit comprises volcanogenic massive sulphide mineralisation consisting of stratabound lenses of pyrite, sphalerite, galena and chalcopyrite. The mineralisation is hosted in the Silurian aged Woodlawn Felsic Volcanic package of the Goulburn sub-basin on the eastern side of the Lachlan Fold Belt.
|
Drill hole Information
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o A summary of all information material to the understanding of the exploration results including a tabulation of the following information for all Material drill holes:
|
|
A table detailing the drill hole information is given in the body of the report.
|
Data
|
-
In reporting Exploration Results, weighting averaging techniques, maximum and/or minimum grade truncations (eg cutting of high grades) and cut-off grades are usually Material and should be stated.
-
Where aggregate intercepts incorporate short lengths of high grade results and longer lengths of low grade results, the procedure used for such aggregation should be stated and some typical examples of such aggregations should be shown in detail.
|
|
The reported assays are weighted for their assay
|
aggregation
|
interval width. The majority of the assay interval widths
|
methods
|
are 1 metre, but this weighting does take into account
|
the non 1 metre intervals and weights the average
|
assay results accordingly.
|
|
For the results reported here no weighting was
|
included for specific gravity (SG) measurements that
|
have been taken for all sample intervals as the
|
samples within the intervals are of a similar SG.
|
Relationship between mineralization widths and intercept lengths
|
-
These relationships are particularly important in the reporting of Exploration Results.
-
If the geometry of the mineralisation with respect to the drill hole angle is known, its nature should be reported.
|
|
The massive sulphide zone intercepted in the drilling to date is at an angle to the drill axis and therefore the true width is estimated to be some 0.8 of down-hole width. That is, a down-hole intercept of 16m equates to a true width of 12m. This is only an approximation at this stage and will be better estimated as the orientation of the Lenses is better defined.
|
Diagrams
|
|
|
A long-section showing the hole positions relevant for current phase of exploration is included in the release. Other maps and diagrams showing the location of the Woodlawn Project are included in other recent Company releases.
|
Balanced reporting
|
|
|
The reporting is considered to be balanced and all relevant results have been disclosed for this current phase of exploration.
|
Other substantive
|
|
|
The drill holes are being cased with either 40 or 50 millimetre PVC tubing for down-hole DHEM surveying
|
exploration
|
which is undertaken on the majority of the holes drilled.
|
data
|
|
Geotechnical logging is undertaken on all core, 25m
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ASX/TSX Release Heron Resources Limited
13968376/2
Criteria
|
JORC Code explanation
|
Commentary
|
results; bulk samples - size and method of
|
either side of the massive sulphide lenses.
|
treatment; metallurgical test results; bulk
|
|
Archimedes method SG measurements are determined
|
density, groundwater, geotechnical and rock
|
for all sampled intervals.
|
characteristics; potential deleterious or
|
contaminating substances.
|
Further work
|
|
The nature and scale of planned further work (eg tests for lateral extensions or depth extensions or large-scale step-out drilling).
|
|
The second phase of drilling at Woodlawn commenced in May 2015 and will be ongoing until around the end of 2015. The program is designed to provide the critical drill data for the Mineral Resource definition that will feed into the Feasibility Study now underway.
|