Sydney, Australia, July 19, 2017 (GLOBE NEWSWIRE) -- Heron Resources Limited (ASX:HRR TSX:HER, “Heron” or the
“Company”) is pleased to provide an exploration update from the drilling program currently underway at its wholly-owned
Woodlawn Zinc-Copper Project, located 250km south-west of Sydney, New South Wales, Australia.
- Initial assays received from current G2 Lens drilling program, including:
-
4.7m at 53.0% ZnEq[1] from 107.2m (10.8% Zn, 0.7% Cu, 8.6% Pb, 10.4g/t Au, 802g/t Ag)
WNDD0114
- Including: 2.7m at 87.2% ZnEq from 107.2m (18.4% Zn, 1.2% Cu, 14.4% Pb, 16.9g/t Au, 1,299g/t Ag)
-
14.0m at 12.4% ZnEq from 146.0m (7.5% Zn, 1.0% Cu, 1.7% Pb, 0.1g/t Au, 8.7g/t Ag) WNDD0114
- Including: 6.9m at 21.6% ZnEq from 150.6m (13.0% Zn, 1.9% Cu, 2.8% Pb, 0.1g/t Au, 21.7g/t Ag)
The drilling program of approximately 4,300m is targeting an expansion of the shallow resource at the newly identified G2 Lens.
The program is progressing well with a number of significant assays returned.
Commenting on these latest results, Heron Resources Managing Director and CEO, Mr Wayne Taylor, said:
“The assay results returned for WNDD0114 represent some of the highest grades seen at Woodlawn and demonstrate the potential
to delineate new zones of mineralisation close to surface with a dedicated drilling approach. This shallow location is expected to
have a positive impact on early cash flows with this area being currently outside the existing mine plan and financial
modelling.”
G2 Lens Drilling
The G2 Lens is located to the south of the Kate Lens, and is adjacent to the planned route of the decline, 100-200m below the
surface. Recent drilling has targeted this area for its ability to add to the early mine inventory. A program of
approximately 4,300m of diamond core drilling commenced in early May to define and expand the shallow resource base. To date
19 holes for 3,687m have been drilled with several holes intersecting both the hanging wall zone (G2HW) and the main G2 Lens which
consists of high-grade zinc-sulphide stringers.
Of particular note is drill hole WNDD0114, which has returned (See Figures 1 and 2):
-
4.7m at 53.0% ZnEq from 107.2m (10.8% Zn, 0.7% Cu, 8.6% Pb, 10.4g/t Au, 802g/t Ag) WNDD0114
- Including: 2.7m at 87.2% ZnEq from 107.2m (18.4% Zn, 1.2% Cu, 14.4% Pb, 16.9g/t Au, 1,299g/t Ag)
-
14.0m at 12.4% ZnEq from 146.0m (7.5% Zn, 1.0% Cu, 1.7% Pb, 0.1g/t Au, 8.7g/t Ag) WNDD0114
- Including: 6.9m at 21.6% ZnEq from 150.6m (13.0% Zn, 1.9% Cu, 2.8% Pb, 0.1g/t Au, 21.7g/t Ag)
Drill hole WNDD0114 is up-dip of WNDD0110 which intercepted high grade mineralisation in the 2016 program, including:
- 9.8m @ 28% ZnEq from 107m (8.7% Zn, 0.5% Cu, 5.2% Pb, 4.0g/t Au, 326g/t Ag) WNDD0110
-
- Including 3.7m @ 56% ZnEq (18.7% Zn, 1.2% Cu, 10.0% Pb, 6.9g/t Au, 650g/t Ag) WNDD0110
- 6.0m @ 10% ZnEq from 140m (7.9% Zn, 0.2% Cu, 0.7% Pb, 0.2g/t Au, 13g/t Ag) WNDD0110
These high grade massive sulphide zones are interpreted as an annealing of the sulphide stringers within the lens, probably
along a structural position, and improves the overall potential of the lens to provide a higher-grade production source of greater
widths.
Drill holes located near and around WNDD0114 have intersected more typical G2 zinc stringer mineralisation which continues to
help define the limits of this zone, including:
WNDD0112:
- 1.4m @ 23.4% ZnEq from 110.2m (7.9% Zn, 3.2% Pb, 0.64% Cu, 0.3g/t Au, 353g/t Ag) (G2HW)
- 4.9m @ 7.6% ZnEq from 116.2m (3.8% Zn, 2.4% Pb, 0.2% Cu, 0.4g/t Au m, 28g/t Ag) (G2 Main)
WNDD0116:
- 2.4m @ 16.0% ZnEq from 108.1m (8.1% Zn, 0.4% Cu, 2.8% Pb, 0.8g/t Au, 119g/t Ag) (G2HW Lens)
Figure 1: Part of the high grade zone of mineralisation intersected in WNDD0114 within the main G2 Hanging-wall Lens
(G2HW). Up-hole direction is to the left in the tray.
http://www.heronresources.com/tsximages/20170719/20170719Fig1.jpg
[1] ZnEq % used in this release refers to the calculated Zn equivalent grade based on the Zn, Cu, Pb, Au and Ag
grades, the formula for which is provided at the end of this report.
Figure 2: G2 Lens cross-section showing location of WNDD0114 in relation to previous drilling. http://www.heronresources.com/tsximages/20170719/20170719Fig2.jpg
Figure 3: Woodlawn G2 Lens long-section showing interpreted lens shape, recent drilling and proposed infill
holes. http://www.heronresources.com/tsximages/20170719/20170719Fig3.jpg
A number of mineralised intercepts have been returned with assays pending including:
WNDD0118:
5.8m of stringer and some massive zinc/lead/copper from 113.8m (G2 up-dip from WNDD0106)
10.8m of chlorite/sulphide stringers with zinc/lead/copper from 124.0m (G2 up-dip from WNDD0106)
WNDD0119:
16.1m of 50% semi massive pyrite from 110.0m (G2 Lens)
WNDD0120:
2.4m of stringer and disseminated zinc from 93.4m (G2HW)
9.1m of chlorite schist with zinc stringers from 121m (G2 main footwall chlorite)
WNDD0121:
3.5m of massive and stringer zinc/lead/copper from 102.1m (G2HW)
6.6m of stringer zinc mineralisation from 111.0m (G2 main lens)
WNDD0122: no intercept – geotech hole into Kate decline position – competent rhyolite intersected
WNDD0123:
8.0m of stringer copper mineralisation from 184.4m (G2 upper)
8.2m of stringer copper in chlorite from 208.0m (G2 Main)
12.4m of copper stringers in broad alteration halo on north extent of G2 from 250.0m
WNDD0124:
2.5m of high grade massive zinc/lead/copper polymetallic ore below G1 stopes from 200.6m
WNDD0126:
10.4m of copper stringer mineralisation from 151.6m in main G2 position
WNDD0127:
1.8m of zinc/copper stringers from 131.4m (G2)
WNDD0129:
12.5m of massive and stringer copper from 216.0m (G2 footwall, G2FW)
WNDD0130:
2.8m of massive and stringer copper from 204.4m (G2FW)
Forward Program
The 4,300m drilling program into the G2 Lens will be completed in the coming weeks. A number of encouraging massive
sulphide intercepts (assays pending) have been returned in the northern section of the G2 zone and these are the current focus of
the drill program.
About Heron Resources Limited:
Heron’s primary focus is the development of its 100% owned, high grade Woodlawn Zinc-Copper Project located 250km southwest of
Sydney, New South Wales, Australia. In addition, the Company holds a significant high quality, gold and base metal tenement
holding in central and eastern New South Wales.
Compliance Statement (JORC 2012 and NI43-101)
The technical information in this report relating to the exploration results 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 approved the scientific and technical disclosure in the news
release.
CAUTIONARY NOTE REGARDING FORWARD-LOOKING INFORMATION
This report 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 report. 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 report 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.
No stock exchange, regulation services provider, securities commission or other regulatory authority has approved or
disapproved the information contained in this report.
Appendix 1
Drill hole details for diamond drill holes completed as part of the Phase IV drill campaign.
| Hole No. |
WMG
East (m) |
WMG
North (m) |
WMG
RL (m) |
Surface
Dip |
WMG Surface
Azimuth |
EOH
Depth (m) |
Target |
| WNDD0112 |
9173 |
19204 |
2795 |
-77 |
88 |
180.7 |
G2HW and G2 Lenses |
| WNDD0113 |
9173 |
19204 |
2795 |
-69 |
92 |
203.2 |
G2HW and G2 Lenses |
| WNDD0114 |
9173 |
19204 |
2795 |
-65 |
108 |
182.7 |
G2HW and G2 Lenses |
| WNDD0115 |
9173 |
19204 |
2795 |
-77 |
116 |
161.1 |
G2HW and G2 Lenses |
| WNDD0116 |
9173 |
19204 |
2795 |
-70 |
122 |
167.7 |
G2HW and G2 Lenses |
| WNDD0117 |
9150 |
19222 |
2795 |
-75 |
95 |
185.8 |
G2HW and G2 Lenses |
| WNDD0118 |
9212 |
19178 |
2795 |
-66 |
88 |
142.6 |
G2 Lens extension |
| WNDD0119 |
9212 |
19178 |
2795 |
-56 |
92 |
146.6 |
G2 Lens extension |
| WNDD0120 |
9212 |
19178 |
2795 |
-61 |
106 |
143.6 |
G2 Lens extension |
| WNDD0121 |
9212 |
19178 |
2795 |
-71 |
120 |
139.5 |
G2 Lens extension |
| WNDD0122 |
9151 |
19222 |
2795 |
-82 |
95 |
278.8 |
Geotechnical - Kate Lens |
| WNDD0123 |
9151 |
19222 |
2795 |
-67 |
113 |
278.8 |
G2 Lens extension |
| WNDD0124 |
9161 |
19247 |
2795 |
-69 |
68 |
221.2 |
G Lens extension |
| WNDD0125 |
9161 |
19247 |
2795 |
-66 |
48 |
239.8 |
G Lens extension |
| WNDD0126 |
9185 |
19203 |
2795 |
-60 |
94 |
173.4 |
G Lens extension |
| WNDD0127 |
9185 |
19203 |
2795 |
-53 |
83 |
166.9 |
G2HW and G2 Lenses |
| WNDD0128 |
9212 |
19178 |
2795 |
-61 |
75 |
166.7 |
G2 Lens extension |
| WNDD0129 |
9150 |
19222 |
2795 |
-67 |
71 |
275.8 |
G2 Lens extension |
Notes: WMG = Woodlawn Mine Grid
Assays results to date for diamond drill holes completed as part of the Phase IV drill
campaign.
| Hole No |
From (m) |
To (m) |
Downhole Width (m) |
Estimated True Width (m) |
ZnEq% |
Zn (%) |
Cu (%) |
Pb (% |
Au (g/t) |
Ag (g/t) |
|
| |
| WNDD0112 |
110.2 |
111.6 |
1.4 |
1.1 |
23.4 |
7.9 |
0.64 |
3.2 |
0.3 |
353 |
|
| WNDD0112 |
116.6 |
122.5 |
5.9 |
4.7 |
7.0 |
3.6 |
2.2 |
0.2 |
0.4 |
26.5 |
|
| WNDD0113 |
Assays pending |
|
| WNDD0114 |
107.2 |
111.9 |
4.7 |
3.8 |
53 |
10.8 |
0.7 |
8.6 |
10.4 |
802.3 |
|
| WNDD0114 |
146.0 |
160.0 |
14 |
11.2 |
12.4 |
7.5 |
1.0 |
1.7 |
0.1 |
8.70 |
|
| WNDD0115 |
139.7 |
140.8 |
1.1 |
0.9 |
6.1 |
3.2 |
0.4 |
0.9 |
0.4 |
22.1 |
|
| WNDD0116 |
108.1 |
110.5 |
2.4 |
1.9 |
16.0 |
8.1 |
0.4 |
2.8 |
0.8 |
119 |
|
| WNDD0116 |
146.5 |
147.6 |
1.1 |
0.9 |
9.8 |
3.9 |
0.8 |
2.5 |
0.3 |
46.8 |
|
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); unless noted 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; * Previously reported results; ^ SG weighted grades used due to significant differences in SG of
individual samples.
Zinc equivalent calculation
The zinc equivalent ZnEq calculation takes into account, mining costs, milling costs, recoveries, payability (including
transport and refining charges) and metal prices in generating a Zinc equivalent value for Au, Ag, Cu, Pb and Zn. ZnEq =
Zn%+Cu%*3.12+Pb%*0.81+*Au g/t*0.86+Ag g/t*0.03. Metal prices used in the calculation are: Zn US$2,300/t, Pb US$ 2,050/t, Cu
US$6,600/t, Au US$1,250/oz and Ag US$18/oz. It is Heron’s view that all the metals within this formula are expected to be
recovered and sold.
JORC 2012 Table 1
Section 1 Sampling Techniques and Data
(Criteria in this section applies to all succeeding sections)
| Criteria |
JORC Code explanation |
Commentary |
| 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 HQ3 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 along the core orientation line (where available). Generally 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 |
· Drill type (eg core, reverse circulation, open-hole hammer, rotary air
blast, auger, Bangka, sonic, etc) and details. |
· Diamond-core drilling is being undertaken by Sandvik DE710 rigs with mostly
HQ3 sized core being drilled. Various techniques are employed to ensure the hole is kept within limits of the planned
position. The core is laid out in standard plastic cores trays. |
| Drill sample recovery |
· Method of recording and assessing core and chip sample recoveries and
results assessed. |
· The core is transported to an enclosed core logging area and recoveries are
recorded. Recoveries to date have been better than 95%. The core is orientated where possible and marked with 1
metre downhole intervals for logging and sampling. |
| Logging |
· Whether core and chip samples have been geologically and geotechnically
logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical
studies. |
· The diamond core is geologically logged by qualified geologists.
Geotechnical logging is also being undertaken on selected sections of the core. Samples for metallurgical testing are
being kept in a freezer to reduce oxidation prior to being transported to the metallurgical laboratory. |
| Sub-sampling techniques and sample preparation |
· For all sample types, the nature, quality and appropriateness of the
sample preparation technique.
|
· 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 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 assaying and laboratory
procedures used and whether the technique is considered partial or total.
· Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory checks) and
whether acceptable levels of accuracy (ie lack of bias) and precision have been established. |
· Sample preparation and assaying is being conducted through ALS
Laboratories, Orange, NSW with certain final analysis of pulps being undertaken at the ALS Laboratory in Brisbane QLD.
· Gold is determined by 30g fire assay fusion with ICP-AES analysis to 1ppb LLD.
· Other elements by mixed acid digestion followed by ICP-AES analysis.
· 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 |
· The verification of significant intersections by either independent or
alternative company personnel.
· Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic)
protocols.
· Discuss any adjustment to assay data. |
· An internal review of results was undertaken by Company personnel. No
independent verification was undertaken at this stage.
· All field and laboratory data has been entered into an industry standard database (DataShed) using a contract database
administrator (DBA) in the Company’s Perth office. Validation of both the field and laboratory data is undertaken prior
to final acceptance and reporting of the data.
· 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. |
| Location of data points |
· Accuracy and quality of surveys used to locate drill holes (collar and
down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation. |
· The drill collars were initially located with a combination of handheld GPS
and licenced surveyor using a DGPS system, with accuracy of about 1m. The final drill collars are “picked up” by a
licenced surveyor with accuracy to 1 centimetre.
· While drilling is being undertaken, downhole surveys are conducted using a downhole survey tool that records the
magnetic azimuth and dip of the hole. These recordings are taken approximately every 30 metres downhole. As a
check, certain holes are also being surveyed with gyroscopic methods, with some 10 percent of holes drilled in the current
program also surveyed by this method after drilling has been completed. |
| Data spacing and distribution |
· Data spacing for reporting of Exploration Results.
· Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity
appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied.
· Whether sample compositing has been applied. |
· The diamond drilling is mostly following-up in various directions from
previous intercepts with a nominal spacing in the range 20-40m. This drill hole spacing will be sufficient to provide
Mineral Resource estimates in the future. |
| Orientation of data in relation to geological structure |
· Whether the orientation of sampling achieves unbiased sampling of
possible structures and the extent to which this is known, considering the deposit type. |
· The drilling orientation is designed to intersect the mineralised lenses at
a close to perpendicular angle. The mineralised lenses are dipping at approximately 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. |
· The cut core samples are secured in green plastic bags and are being
transported to the ALS laboratory in Orange, NSW via a courier service or with Company personnel/contractors. |
| Audits or reviews |
· The results of any audits or reviews of sampling techniques and
data. |
· A review and assessment of the laboratory procedures was under taken by
Company personnel in late 2014 resulting in some changes to their sample pulverising procedure. |
Section
2
Reporting of Exploration Results
(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 250km south-west of Sydney in the state of
New South Wales. The area is on 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 (Crown
and Private Land) 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 |
· Acknowledgment and appraisal of exploration by other parties. |
· The Woodlawn deposit was discovered by the Jododex JV in 1970 and open-pit
mining began in 1978 and continued through to 1987. The project was bought outright by Rio Tinto Ltd (CRA) in 1984 who
completed the open-pit mining. Underground operations commenced in 1986 and the project was sold to Denehurst Ltd in 1987 who
continued underground mining up until 1998. The mineral rights to the project 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 |
· Deposit type, geological setting and style of mineralization. |
· 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 |
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 aggregation methods |
· 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 interval width. The
majority of the assay interval widths 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 |
· Appropriate maps and sections (with scales) and tabulations of
intercepts should be included for any significant discovery being reported These should include, but not be limited to a plan
view of drill hole collar locations and appropriate sectional views. |
· Where relevant, a diagram 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 |
· Where comprehensive reporting of all Exploration Results is not
practicable, representative reporting of both low and high grades and/or widths should be practiced to avoid misleading
reporting of Results. |
· The reporting is considered to be balanced and all relevant results have
been disclosed for this current phase of exploration. |
| Other substantive exploration data |
· Other exploration data, if meaningful and material, should be reported
including (but not limited to): geological observations; geophysical survey results; geochemical survey results; bulk samples –
size and method of treatment; metallurgical test results; bulk density, groundwater, geotechnical and rock characteristics;
potential deleterious or contaminating substances. |
· Selected drill holes are being cased with 50 millimetre PVC tubing for
potential down-hole DHEM surveying which is undertaken on the majority of the holes drilled.
· Geotechnical logging is undertaken nominally 25m either side of the massive sulphide lenses.
· Archimedes method SG measurements are determined for all sampled intervals. |
| 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 fourth phase of drilling at Woodlawn commenced in May 2017 with some
4,300m to be drilled. The program is primarily designed to infill and expand the shallow G2 Lens position as this can have an
immediate impact on early mine production schedules. A number of geotechnical holes are also planned as part of this
program.
· The results of the program are being assessed as they come to hand and adjustments to the program made as is
warranted. |
For further information, please visit www.heronresources.com.au or contact: Australia: Mr Wayne Taylor Managing Director and Chief Executive Officer Tel: +61 2 9119 8111 or +61 8 6500 9200 Email: heron@heronresources.com.au Canada: Tel: +1 647-862-1157 (Toronto)
