Annual Report to shareholders
Released
Released
Announcement PDF
Contents
Chairman’s Letter .................................................................................................................... 3
Review of Operations .............................................................................................................. 4
Directors' Report……………………………………………………………………………………...33
Corporate Governance Statement ......................................................................................... 46
Directors' declaration ............................................................................................................. 47
Auditor’s Independence Declaration ...................................................................................... 48
Independent Auditor’s Report ................................................................................................ 49
Consolidated Income Statement............................................................................................ 53
Consolidated Statement of Comprehensive Income.............................................................. 54
Consolidated Statement of Financial Position ....................................................................... 55
Consolidated Statement of Changes in Equity ...................................................................... 56
Consolidated Statement of Cash Flows................................................................................. 57
Notes to the consolidated financial statements...................................................................... 58
Additional ASX Shareholder Information ............................................................................... 82
Corporate Directory ............................................................................................................... 91
2023 ANNUAL REPORT
2
Chairman’s Letter
Dear Shareholder,
It’s been another very productive 12 months for Horizon Gold Limited. We have again significantly
increased the value of the Company’s 100%-owned Gum Creek Gold Project by strengthening and
expanding the JORC-compliant gold resource estimate to 2.14 million ounces of gold, announcing a
maiden base metal resource at the Altair deposit, and further broadening the Project’s resource
development optionality. The revised gold resource represents a 19% increase in contained gold, at an
impressive discovery cost of around A$15/oz.
During the year the Company completed over 21,000 metres of RC and diamond drilling at 18 priority
targets and is planning to continue drilling at high priority targets with the potential to further increase
the gold resource base.
A regional geological interpretation and exploration targeting exercise has identified numerous new
greenfields targets that will guide future exploration and mineral resource growth along the 80
kilometres of continuous prospective strike within the recently expanded 663 square kilometre
landholding.
In July 2023 the Company acquired 60,759,746 shares in Alto Metals Limited (ASX:AME) for $3.17
million which currently represents 8.5% of AME’s issued capital. This strategic investment is part of
Horizon’s broader aim of enhancing the value of the Gum Creek Gold Project.
The Company has established a short-term loan facility with its major shareholder, Zeta Resources
Limited, which will allow Horizon to prioritise its future strategic objectives while it considers a suitable
capital raising strategy. The capital raising will fund further drilling to advance priority exploration and
resource expansion targets, undertake an initial scoping study at Gum Creek, and facilitate the
repayment of the loan.
The Board believes that Gum Creek represents a compelling development opportunity, and with the
positive outlook for gold we are confident that our gold-focused strategy will add significant value for
shareholders.
On behalf of the Board, I would like to thank our shareholders for their ongoing support as we look
forward to sharing more exciting drilling results, resource growth and development progress during the
year ahead.
Yours sincerely
Peter Sullivan
Chairman
2023 ANNUAL REPORT
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Review of Operations
Horizon Gold Limited (ASX:HRN) (Horizon or the Company) is focused on
expanding and enhancing the quality of its gold resources and unlocking the economic
potential of its 100%-owned Gum Creek Gold Project (Gum Creek or the Project)
located in a world class gold province within the Yilgarn Craton in Western Australia.
Gum Creek has historically produced more than 1 million ounces of gold and hosts a current Mineral
Resource Estimate (MRE) of 2.14 million ounces. The Project covers 663km2 of contiguous tenure over
the Gum Creek greenstone belt located within a well-endowed gold region that hosts multimillion-ounce
resources at Mt Magnet, Meekatharra, Wiluna, Bellevue and now at Gum Creek (Figure 1).
The Project not only represents a significant brownfields exploration opportunity, but also offers
significant greenfields exploration upside along its 80 kilometres of prospective and continuous strike.
All the existing resources and most of the potential resource areas are located on granted Mining
Leases. The Project also has significant infrastructure in place, including a 110-man camp, an operating
airstrip, a relic CIL processing facility, extensive haul road network and a large tailings storage facility.
Figure 1: Gum Creek Gold Project showing surrounding mines and gold deposits over simplified geology.
2023 ANNUAL REPORT
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Project History
Gold was first discovered in the area at Jonesville (now part of the Swan deposit) in 1926, with first
recorded gold production in 1931. More modern mining operations commenced in the 1980’s and
ceased in 2005 when the gold price was approximately A$560/oz. To that time, more than one million
ounces of gold was produced from over thirty open pits and three underground mines, with the main
gold-producing areas being Swan-Swift, Kingfisher and Omega.
Unlocking Value at the Gum Creek Gold Project
During the reporting period the Company completed an extensive reverse circulation (RC) and diamond
drilling program across 17 high priority gold prospects to upgrade the integrity of the open pit resources
and to expand the existing gold resource estimate at Gum Creek. Numerous spectacular extensional
results were received from both existing resource and emerging resource targets leading to a major
Mineral Resource Estimate (MRE) increase of 343,700oz for a total MRE of 2.14Moz. In the past two
years the Gum Creek gold resource base has increased by 57% with over 63% of the resources in the
Indicated category. The Company’s focus on drilling is continuing with RC and diamond drilling planned
to further increase the MRE. A scoping study based on Whittle in-pit optimised resources for the Gum
Creek Project is planned to commence concurrently with the next drilling program.
A detailed geological interpretation of previous 1:10,000 scale mapping (simplified in Figure 2), a
geochemical targeting exercise and a detailed gold and base metal target review and ranking exercise
was completed during the year. The results will guide future exploration and MRE growth within the
Company’s highly prospective Gum Creek Project.
Regional Geology
The Project covers the most prospective parts of the Gum Creek Greenstone Belt, located within the
Southern Cross Province of the Youanmi Terrane, which forms part of the mineral rich Archaean Yilgarn
Craton in Western Australia. The Gum Creek Greenstone Belt is an elongate, broadly sinusoidal
formation about 110km long and 24km wide, dominated by mafic volcanic and sedimentary sequences,
intruded by granitoids of various ages and compositions (Figure 2). The margins of the belt are typically
dominated by contact-metamorphosed basalts and banded iron formations (BIF).
Historically, gold at Gum Creek has been mined from structurally controlled Archean lode-gold deposits
and associated near surface supergene gold enrichment zones. Deposits are hosted in a variety of rock
types including mafic volcanics, BIF and fine-grained sediments. The Project contains numerous gold
and lesser base metal prospects and deposits along its entire 80km strike length.
2023 ANNUAL REPORT
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Figure 2: Gum Creek Gold Project current mineral resources and exploration targets over regional
geology.
Gold Resource Estimate
On 15 May 2023 the Company announced an updated MRE for the Gum Creek Gold Project of 44.45Mt
@ 1.50g/t Au for 2.14 million ounces contained gold (Table A) reported in accordance with the JORC
Code (2012 Edition) and based on documentation prepared by Competent Persons as defined by the
JORC Code guidelines. The MRE included updates to the Eagle, Howards, Heron South, Kingfisher,
Shiraz, and Specimen Well deposits, and maiden MRE’s for the Deep South Reliance, Eagles Peak,
Fangio, Kearrys, Hawk, Heron, Hyperno-Reliance, Melbourne Bitter and Wedge prospects. A summary
of the updated MRE is detailed in Table A below.
2023 ANNUAL REPORT
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The revised MRE represents a 343,700oz (19%) increase in Indicated and Inferred contained gold
when compared with the July 2022 MRE at a discovery cost of A$15/oz. The Indicated resource
ounces in the updated MRE represent 63% of the total MRE (Table B). The free milling portion of
the MRE is 32.97Mt @ 1.22g/t Au for 1.30Moz (Table C), representing over 61% of the total resource
ounces and a 9% increase to the July 2022 MRE free milling ounces.
A comparison of this MRE with the previous MRE is detailed in the ‘Additional ASX Shareholder
Information’ at the end of this report and is summarized in Table B. The MRE contains 29 discrete
deposit areas that are a mixture of open cut and underground resources. To date, no Ore Reserves
have been declared for the Gum Creek Gold Project. A geological map of the belt and project resource
locations are shown in Figure 2. Pit optimisation work at $2600/oz and $2800/oz has been undertaken
on all gold resources.
Table A: Gum Creek Gold Resources as at 15 May 2023
Cut-off
grade
(g/t Au)
Resource
Date
Swan/Swift OC
Swan UG
Swift UG
Wilsons UG
Howards
Kingfisher OC
Kingfisher UG
Heron
Heron South
Shiraz
Eagle
Wyooda
Snook
Hawk
Toedter
Specimen Well
Wedge
Camel Bore
Kearrys
Psi
HypernoReliance
Melbourne
Bitter
Deep
South
Reliance
Eagles Peak
Orion
Wahoo
Fangio
Jul-22
Jul-22
Jul-22
Jul-13
May-23
May-23
May-23
May-23
May-23
May-23
May-23
Jul-22
Jul-22
May-23
Aug-16
May-23
May-23
Jul-22
May-23
Jul-22
0.4
2.5 / 3.0*
3.0
1.0
0.4
0.6
1.5
0.6
0.8
0.4
0.8
0.8
0.8
0.6
0.5
0.8
0.6
0.8
0.6
0.8
May-23
Total
Indicated
Au
Tonnes
Gold (oz)
(g/t)
Tonnes
9,980,000
301,000
2,131,000
8,064,000
621,000
359,000
330,000
720,000
2,539,000
395,000
430,000
75,000
378,000
379,000
450,000
100,000
1.09
6.91
5.33
0.82
1.77
3.48
2.11
1.79
0.70
1.94
1.56
2.57
1.28
1.47
1.24
2.08
349,500
66,900
365,000
213,100
35,400
40,200
22,400
41,400
57,300
24,700
21,600
6,200
15,500
17,900
18,000
6,700
2,735,000
226,000
138,000
136,000
2,136,000
269,000
917,000
1,822,000
761,000
1,064,000
764,000
862,000
846,000
471,000
689,000
529,000
487,000
100,000
46,000
226,000
0.6
119,000
1.73
6,600
May-23
0.6
214,000
1.56
May-23
0.6
176,000
May-23
Jul-22
Jul-22
May-23
0.6
0.8
0.8
0.6
264,000
69,000
99,000
28,193,000
Inferred
Au
Gold (oz)
(g/t)
Tonnes
434,100
118,500
25,400
391,000
266,900
45,100
135,700
110,600
78,900
78,900
68,800
64,800
54,000
34,400
34,000
25,500
23,800
21,800
20,000
19,000
445,000
1.31
18,800
6,100
362,000
1.44
16,800
1.56
2,400
224,000
1.62
11,700
0.99
1.40
1.25
1.35
1,300
8,200
10,400
1,300
305,000
251,000
258,000
129,000
1.16
1.43
1.25
1.33
11,400
11,500
10,400
5,500
84,600
51,600
25,400
26,000
53,800
9,700
95,500
88,200
37,500
21,600
44,100
43,200
47,800
18,900
34,000
25,500
23,800
3,900
2,000
12,300
12,715,000
527,000
138,000
2,267,000
10,200,000
890,000
1,276,000
2,152,000
1,481,000
3,603,000
1,159,000
1,292,000
921,000
849,000
689,000
529,000
487,000
479,000
496,000
326,000
326,000
1.16
12,200
10,700
148,000
1.28
1.64
9,300
48,000
1.19
1.49
1.32
10,100
3,300
4,200
41,000
182,000
258,000
30,000
1,346,000
16,257,000
Gold (oz)
1.06
6.99
5.72
5.36
0.81
1.58
3.31
1.60
1.66
0.68
1.85
1.56
1.82
1.26
1.54
1.50
1.52
1.42
1.25
1.81
0.96
7.10
5.72
5.95
0.78
1.12
3.24
1.51
1.53
0.63
1.80
1.56
1.76
1.25
1.54
1.50
1.52
1.21
1.35
1.69
1.48
Total
Au
(g/t)
1.51
791,300
44,450,000
1.50
2,137,300
* Cut-off grades are 2.5g/t Au for Swan Underground (UG) Indicated, and 3.0g/t Au for Swan UG Inferred.
** Wyooda includes the Kingston Town, Think Big and Manikato resources which are within 600m and 200m of each other respectively.
Notes: Figures have been rounded.
The information in this announcement that relates to the reporting of the Wilsons, and Toedter Mineral Resources has been extracted from
the Horizon Gold Limited ASX announcement titled “Gum Creek Gold Project Resource Update” dated 12 February 2021 and is available
to view on https://horizongold.com.au. The information in this announcement that relates to the reporting of the Swan/Swift Open Pit Mineral
Resource, the Swan and Swift Underground Mineral Resource and the Camel Bore, Orion, Psi, Snook, Wahoo and Wyooda Mineral
Resources has been extracted from the Horizon Gold Limited ASX announcement titled “32% Increase in Resources at Gum Creek Gold
Project” dated 25 July 2022 and is available to view on https://horizongold.com.au.
2023 ANNUAL REPORT
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Table B: Gum Creek Mineral Resources July 2022 / May 2023 Comparison
2022 Gum Creek MRE
Resource
Category
Tonnes
Au (g/t)
Ounces
Indicated
24,280,000
1.47
1,149,400
Inferred
12,546,300
1.60
644,200
Total
36,826,300
1.51
1,793,600
Note: Figures have been rounded.
2023 Gum Creek MRE
Tonnes
Au (g/t)
Ounces
28,193,000
1.48
1,346,000
16,257,000
1.51
791,300
44,450,000
1.50
2,137,300
Tonnes
16%
30%
21%
Variance
Au (g/t)
1%
-5%
-1%
Ounces
17%
23%
19%
Table C: Gum Creek Mineral Resources by Metallurgical Category as at 15 May 2023
Indicated
Inferred
Total
Tonnes
Au (g/t)
Ounces
Tonnes
Au (g/t) Ounces
Tonnes
Au (g/t)
Ounces
Free Milling
22,513,000
1.15
834,300 10,460,000
1.37 461,400 32,973,000
1.22 1,295,700
Refractory
5,680,000
2.80
511,700
5,797,000
1.77 329,900 11,477,000
2.28
841,600
Total
28,193,000
1.48 1,346,000 16,257,000
1.51 791,300 44,450,000
1.50 2,137,300
Notes: Figures have been rounded. Preliminary metallurgical testwork indicates oxide mineralisation at all deposits is free milling, transition
mineralisation from Eagle, Eagles Peak, Deep South Reliance, Fangio, Hawk, Heron South, Howards, Hyperno-Reliance, Kearrys,
Kingfisher, Melbourne Bitter, Orion, Specimen Well, Swan/Swift, Toedter, Wahoo, Wedge and Wyooda is free milling, and fresh
mineralisation from Eagle, Eagles Peak, Deep South Reliance, Fangio, Hawk, Howards, Hyperno-Reliance, Kingfisher, Melbourne Bitter,
Orion, Swan/Swift, Toedter, Wahoo, and Wedge is free milling. Transition and fresh mineralisation from Camel Bore, Heron, Heron South,
Kearrys, Psi, Snook, Specimen Well, Wilsons and Wyooda has variable gold recovery issues.
Material Type
Base Metal Resource Estimate
On 14 March 2023 the Company announced a maiden MRE of 7.0 Mt @ 1.8% Zn, 0.5% Cu, 5.0g/t Ag
(2.9% ZnEq) at a 2.0% ZnEq cut-off for 200,000 ZnEq tonnes (130,000t Zn, 30,000t Cu, 1.1Moz Ag)
for the Altair Zinc-Copper-Silver deposit located 24 kilometres to the north-northwest of the Gidgee Mill
(refer to Figures 2 & 3). Drilling at the Altair prospect during 2022 was completed to test several
compelling conductivity highs down plunge to the east of previously defined Zn-Cu-Ag mineralisation.
The drill results were incorporated into the Altair MRE (Table D).
Table D: Altair Inferred Mineral Resource as at 14 March 2023 (Zinc Equivalent % cut off)
Cut-off
Total Tonnes & Grade
Total Metal Content
ZnEq %
Mt
ZnEq %
Zn %
Cu %
Ag g/t
ZnEq (Kt)
Zn (Kt)
Cu (Kt)
Ag (Moz)
1.5
11.9
2.3
1.5
0.3
4.5
270
180
40
1.7
2.0
7.0
2.9
1.8
0.5
5.0
200
130
30
1.1
2.5
4.3
3.3
2.1
0.5
5.4
140
90
20
0.8
Note: The metal equivalent calculation formula is ZnEq % = Zn (%) + 2.78 x Cu (%) + 0.018 x Ag (g/t) using metal prices of A$4,500/t Zn,
A$12,500/t Cu and A$30/oz Ag. Based on preliminary metallurgical studies, recoveries used were 90% for Zn, 90% for Cu, and 75% for
Ag. In Horizon’s opinion all elements included in the metal equivalents calculation have a reasonable potential to be recovered and sold.
Figures have been rounded.
2023 ANNUAL REPORT
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Figure 3: Altair Long Section (looking NNE) showing drill traces coloured by geology and resource block
model coloured by ZnEq (%).
Exploration and Resource Drilling
During the 2023 financial year (FY23) the Company completed a total of 215 RC holes for 19,890 metres
at 16 high priority targets including the Beta, Deep South, Eagles Peak, Fangio, Hawk, Heron, Heron
South, Hyperno, Kearrys, Kingfisher, Howards, Howards South, Melbourne Bitter, Specimen Well,
Think Big, and Wedge prospects (refer to Figure 2). The drilling was successful at defining shallow
strike extensions and down plunge extensions to interpreted gold shoots and confirming current
geological models and interpretations, with numerous shallow and/or high-grade gold intercepts
returned from all prospects.
The Company also completed six diamond holes for 1,538.4 metres at the Eagle and Kingfisher gold
targets and at the Altair base metal target (refer to Figure 2). Five holes were diamond core “tails”
extending previously drilled RC pre-collars, whilst one hole was drilled from surface at Altair. The
diamond holes were designed to intercept gold mineralisation within fresh rock down plunge from
previous high-grade intercepts to provide lithostructural information and possible controls on
mineralisation. Core logging has further advanced geological interpretations and improved the
Company’s understanding of the structural controls on mineralisation at Kingfisher, Eagle and Altair,
and has been of significant assistance to resource modelling and planning of future drill programs at all
three prospects.
Wedge Prospect
The Wedge Prospect is located 2km northeast of the historic Gidgee Mill and was previously mined by
open cut methods in the early 1990’s. Assay results from 11 RC holes (1,452m) drilled in August 2022
included a spectacular intercept of 52m @ 5.9g/t Au from 91m to EOH including 13m @ 16.7g/t Au
from 123m (WERC002) down plunge to the south of the Wedge pit, and 6m @ 1.8g/t Au from 54m
including 3m @ 3.0g/t Au from 55m (WERC005) from the central fault zone. The WERC002 intercept
2023 ANNUAL REPORT
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is supported by high-grade historic intercepts up plunge to the north and remains open down plunge to
the south (Figure 4).
A maiden MRE of 0.49Mt @ 1.52g/t Au for 23,800 ounces which included Horizon’s 2022 drilling and
historic RC drilling was announced for the Wedge Prospect during the year. Gold mineralisation is
continuous over a 450 metre strike and is currently defined to a maximum vertical depth of 110 metres,
with the base of complete oxidation at ~60 metres below surface.
Additional drilling is planned to further extend the known gold mineralisation down dip and down plunge
to the north and south of the broad and high-grade intercepts identified in drilling to date (Figure 4).
Figure 4: Wedge Prospect long section (looking west) showing all drill intercept pierce points (coloured by GxM
i.e. average intercept grade (g/t Au) multiplied by intercept width in metres), FY23 drilling intercepts >7 GxM,
historic unmined drilling intercepts >40 GxM, current resource block model coloured by Au) and A$2800/oz
optimised pit shell.
Kingfisher Prospect
The Kingfisher Prospect lies approximately 3.5 kilometres south of the Gidgee mill. Gold mineralisation
at Kingfisher is located within two sub-parallel moderately southwest-dipping, planar gold lodes within
a 60m wide, 1.2km long shear zone that remains open to the north, south and at depth.
Three diamond core “tails” (642.5m) were completed at Kingfisher during FY23. Assay results from the
RC drilling completed in FY22 and the diamond drilling completed FY23 included a spectacular broad,
high-grade intercept of 15m @ 28.5g/t Au from 346m including 2m @ 189.8g/t Au from 351m from
diamond hole KFRC020D, which targeted a large gap in previous drilling within the eastern lode.
Numerous specks of visible gold were identified in the core from 351.5m to 352.7m within a 3.5m wide
quartz vein. A second excellent intercept of 16m @ 4.4g/t Au from 174m including 6m @ 9.8g/t Au
from 174m was returned from an RC hole (KFRC013) targeting gold mineralisation up-plunge of highgrade intercepts including 10m @ 8.9g/t Au from 190m drilled in 2021 (Figure 5).
2023 ANNUAL REPORT
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The 2022 drill program results were incorporated into an updated MRE for Kingfisher which now has a
combined Open Cut and Underground MRE of 2.17Mt @ 2.60g/t Au for 180,800 ounces representing
a 5% increase in tonnes, a 19% increase in gold grade and an increase of 25% in total gold ounces
when compared to the July 2022 MRE. The drilling at Kingfisher has confirmed the continuity of highgrade gold mineralisation at depth within both eastern and western gold lodes and highlighted the
excellent potential for additional drilling to add underground resource ounces by discovering new highgrade shoots at depth, and to add open cut resources by extending the known shallow gold
mineralisation along strike to the north and south.
Figure 5: Kingfisher long section (looking SW) showing 2022 drill holes, historic and 2022 gold intercept pierce points
coloured by GxM (>24 GxM intercepts labelled), resource block model (coloured by Au) and A$2800/oz optimised pit shell.
Hawk Prospect
The Hawk Prospect is located only 5km southeast of the historic Gidgee mill and was previously mined
by open cut methods. RC drilling (16 holes for 2,464m) was completed beneath and along strike of the
Hawk open pit in June 2022, with one additional 95m deep hole drilled to the south of the prospect in
August 2022. Numerous significant shallow gold intercepts were returned including:
24m @ 3.7g/t Au from 124m including 11m @ 7.6g/t Au from 125m (HKRC001)
7m @ 6.2g/t Au from 119m including 1m @ 29.9g/t Au from 119m (HKRC008)
7m @ 4.9g/t Au from 139m including 1m @ 30.1g/t Au from 142m (HKRC004)
11m @ 2.2g/t Au from 95m including 6m @ 3.7g/t Au from 98m (HKRC014)
9m @ 2.4g/t Au from 134m including 3m @ 4.7g/t Au from 137m (HKRC007)
6m @ 2.5g/t Au from 86m including 2m @ 4.3g/t Au from 88m (HKRC003)
8m @ 1.5g/t Au from 123m including 2m @ 2.6g/t Au from 123m (HKRC006)
A maiden MRE of 0.85Mt @ 1.26g/t Au for 34,400 ounces which included Horizon’s 2022 drilling and
historic RC drilling was announced for the Hawk Prospect during the year. Gold mineralisation at Hawk
is located within two sub-parallel, steeply south-west dipping shear zones containing abundant flat-lying
quartz tension veins. Mineralisation is continuous over a 450 metre strike and is currently defined to a
maximum vertical depth of 130 metres. Additional drilling is planned to further extend the known gold
2023 ANNUAL REPORT
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mineralisation down dip and down plunge to the north of the broad and high-grade intercepts identified
in drilling to date (Figure 6).
Figure 6: Hawk long section (looking SW) showing 2022 drill traces, historic and 2022 gold intercept pierce points
coloured by GxM, current resource block model (coloured by Au) and A$2800/oz optimised pit shell.
Eagle Prospect
The Eagle Prospect is located just 1.4km south of the Gidgee Mill. Significant gold intercepts received
from RC drilling completed in May 2022 and one diamond core “tail” (120.5m) completed in August
2022 included:
12m @ 3.3g/t Au from 210m including 9m @ 4.2g/t Au from 210m (EARC011)
13m @ 2.2g/t Au from 203m including 9m @ 3.0g/t Au from 205m (EARC012)
15m @ 1.4g/t Au from 163m including 5m @ 3.2g/t Au from 168m (EARC012)
11m @ 1.3g/t Au from 22m including 5m @ 2.2g/t Au from 24m (EARC017)
7m @ 1.7g/t Au from 59m including 3m @ 3.5g/t Au from 60m (EARC007)
19m @ 0.8g/t Au from 156m including 5m @ 2.1g/t Au from 168m (EARC010)
36m @ 0.6g/t Au from 150m including 4m @ 3.4g/t Au from 150m (EARC009)
The results highlight the significant potential to expand the Eagle MRE and deepen the optimised pit
shell along the Kingfisher Shear Zone to the south towards the Kingfisher open pit and to the north
towards the historic Roadrunner open pit (Figure 7).
The updated 2023 MRE for the Eagle deposit incorporating the 2022 RC and diamond drilling is 1.16Mt
@ 1.85g/t Au for 68,800 ounces which represents a 101% increase in indicated ounces, a 26%
increase in overall gold grade, and a 7% decrease in total gold ounces when compared to the July 2022
MRE. Further shallow drilling along strike to the north and south of the deposit is planned.
2023 ANNUAL REPORT
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Figure 7: Eagle long section (looking west) showing the Eagle open pit, gold intercept pierce points coloured by GxM with
recent intercepts >7 GxM and historic intercepts >24 GxM labelled, current resource block model (coloured by Au) and
A$2800/oz optimised pit shell.
Heron Prospect
The Heron Prospect is located 14km southeast of the historic Gidgee mill and has not been previously
mined. FY23 RC drilling (15 holes for 2,205m) has identified strike extensions to shallow supergene
mineralisation and down dip extensions to the primary gold mineralisation. Significant gold intercepts
from the recent campaign include:
15m @ 3.0g/t Au from 84m including 6m @ 6.7g/t Au from 84m (HRRC002)
23m @ 1.9g/t Au from 100m including 12m @ 3.3g/t Au from 100m (HRRC013)
7m @ 3.1g/t Au from 105m including 2m @ 9.3g/t Au from 105m (HRRC007)
7m @ 2.5g/t Au from 133m including 4m @ 4.2g/t Au from 133m (HRRC004)
5m @ 2.8g/t Au from 65m including 2m @ 5.9g/t Au from 65m (HRRC006)
Gold mineralisation at Heron is located within two broad flat-lying supergene enrichment zones
overlying three sub-parallel northeast dipping fault zones containing quartz veined altered basalt.
Mineralisation is continuous over an 850 metre strike length and is currently defined to a maximum
vertical depth of approximately 350 metres. The prospect area is deeply weathered with the base of
complete oxidation between 60m and 120 metres below surface.
A maiden MRE of 2.15Mt @ 1.60g/t Au for 110,600 ounces which included Horizon’s 2022 drilling and
historic RC drilling was announced for the Heron Prospect during the year. Further drilling is required
at depth and along strike (Figure 8).
2023 ANNUAL REPORT
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Figure 8: Heron Prospect long section (looking SW) showing gold intercept pierce points (coloured by GxM), 2022
drilling intercepts >10 GxM (labelled), previous drilling intercepts >50 GxM (labelled), current resource block model
(coloured by Au) and A$2800/oz optimised pit shell.
Heron South Prospect
The Heron South deposit is located 15km south-southeast of the historic Gidgee Mill. The nine RC holes
(1,485m) completed at Heron South during July 2022 extended shallow gold mineralisation along strike
to the north and south and confirmed and extended interpreted high-grade south plunging gold shoots
beneath the Heron South open pit (Figure 9). Significant gold intercepts from the program included:
15m @ 3.0g/t Au from 98m including 7m @ 5.5g/t Au from 104m (HERC022)
8m @ 5.2g/t Au from 178m including 2m @ 13.9g/t Au from 179m (HERC023)
8m @ 3.2g/t Au from 113m including 6m @ 4.1g/t Au from 113m (HERC026)
7m @ 3.1g/t Au from 35m including 1m @ 19.2g/t Au from 35m (HERC018)
11m @ 1.6g/t Au from 202m including 4m @ 3.0g/t Au from 204m (HERC021)
2023 ANNUAL REPORT
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Figure 9: Heron South long section (looking west) showing 2022 drill traces, all drill intercept pierce points (coloured
by GxM), MIK resource block model (coloured by Au), and A$2800/oz optimised pit shell.
The updated 2023 MRE incorporating the 2022 RC drilling at the Heron South deposit is 1.48Mt @
1.66g/t Au for 78,900 ounces which represents a 36% increase in tonnes, a 4% decrease in gold
grade, and a 30% increase in total gold ounces when compared to the July 2022 MRE.
Gold mineralisation at Heron South is continuous over a 650 metre strike and is currently defined to a
maximum vertical depth of 200 metres. There is excellent potential to further extend the known gold
mineralisation at Heron South down dip, down plunge and along strike to the north and south with
additional drilling.
Hyperno - Reliance Prospects
The Hyperno - Reliance prospects are located 18km southeast of the historic Gidgee Mill. Significant
gold intercepts from the FY23 RC drilling at Hyperno (36 holes for 2,468m) included:
8m @ 10.1g/t Au from 33m including 2m @ 35.2g/t Au from 35m (HYRC017)
12m @ 1.6g/t Au from 27m including 8m @ 2.2g/t Au from 31m (HYRC006)
5m @ 2.3g/t Au from 34m including 2m @ 4.9g/t Au from 34m (HYRC027)
10m @ 1.0g/t Au from 37m including 5m @ 1.5g/t Au from 40m (HYRC008)
The results confirmed the width and grades of shallow gold mineralisation identified in historic aircore
and RAB drilling. Gold mineralisation is both flat lying (supergene) and dips moderately to the east, is
defined to a maximum vertical depth of approximately 100 metres and has a continuous 600 metre
strike length (Figure 10).
2023 ANNUAL REPORT
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A combined maiden MRE of 0.45Mt @ 1.31g/t Au for 18,800 ounces which included Horizon’s FY23
drilling and historic RC drilling was announced for the Hyperno - Reliance prospects during the year.
Further drilling is required at depth and along strike at both prospects (Figure 10).
Figure 10: Reliance, Hyperno, Reliance South and Deep South prospects drill hole collar plan
coloured by maximum downhole gold, 2022 drilling intercepts >9 GxM (labelled), and
A$2800/oz optimised pit shell outlines over interpreted geology.
2023 ANNUAL REPORT
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Deep South – Reliance South
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