OceanaGold公布截至2025年底的矿产储量与资源量报告

，/CNW/ — OceanaGold Corporation（TSX: OGC）（OTCQX: OCANF）（“OceanaGold”或​“公司”）欣然提供其截至2025年12月31日止年度的矿产储量与矿产资源声明。

要点, /CNW/ — OceanaGold Corporation（TSX: OGC）（OTCQX: OCANF）（“OceanaGold”或“公司”）欣然提供截至2025年12月31日止年度的矿产储量与矿产资源声明。

• 其四个在产资产的总矿产资源储量为 5.83 百万盎司黄金（“Moz Au”）。
• 探明及控制资源量合计为 8.63 百万盎司金（Moz Au）¹，推断资源量为 2.5 百万盎司金（Moz Au）。
• Haile 宣布 Ledbetter Underground（“LUG”）初步地下矿产储量 0.44 Moz 黄金，并通过确定 Ledbetter 最适合作为地下矿山推进，剔除了利润率较低露天矿盎司，同时提高了资产净现值（“NPV”）。
• 黄金价格假设已上调至审慎水平：储量按 $2,200/​oz 计算，资源量按 $2,450/​oz 计算。
• 储量增加主要得益于Macraes露天矿的扩建，并受到金价上涨的支撑，使矿山寿命延长至2032年，以及Haile的Horseshoe Underground矿区的增长。
• At Wharekirauponga, 0.16 Moz of Inferred Resources was added, while a significant increase in resource conversion and growth drilling is planned for 2026. 
• Haile 和 Macraes 的 NI 43 – 101 技术报告将于 2026 年 3 月 31 日前发布，提供仅基于矿产储量的最新矿山寿命计划。Didipio 的 NI 43 – 101 技术报告将于 2026 年上半年发布。

Gerard Bond, President and CEO of OceanaGold, said ​“Our 2025 Reserves and Resources reflect the value added through our successful exploration efforts in 2025, particularly at Horseshoe Underground at Haile and Wharekirauponga Underground at Waihi. The technical work to convert the final open pit phase at Ledbetter to an underground Reserve at Haile resulted in increasing Haile’s NPV. We are recognizing the benefits of operating in a higher gold price environment with the addition of 5 years mine life at Macraes, while maintaining a prudent $2,200 per ounce Reserve gold price assumption to ensure we produce profitable gold. We have a tremendous track record of organically growing our Reserve and Resources through exploration and we are increasing our investment in exploration by 50%, with a planned expenditure of $60M in 2026.”

1. 探明及控制矿产资源量包含矿产储量。

Haile 和 Macraes 的最新矿山计划

Haile 更新后的矿产储量反映出 Ledbetter 露天矿最终阶段（第 4 阶段）的采矿方法变更为地下开采。这一变更去除了低利润的露天矿盎司，同时提高了 Haile 的净现值。除经济效益外，向地下开采的过渡还带来运营效益，包括大幅减少废石移动量、减少倒运、降低温室气体排放以及降低尾矿设施容量需求。在即将发布的技术报告矿山计划中，LUG 井口建设于 2028 年启动，预计 2029 年产出首批开拓矿石，2030 年实现稳态生产。Palomino 地下矿（“PUG”）的首批矿石仍按计划于 2028 年产出。该矿山的矿山寿命将延长至 2036 年。

预计Haile在2027年至2031年期间年均产金210,000 盎司，与之前的技术报告相比，为该矿提供了更可持续、风险更低的生产状况。值得注意的是，Haile的其他露天矿坑的露天开采将持续至2033年，这些矿坑仍与地下作业一起构成计划开采序列的一部分。

Macraes 储量增加反映了该矿对更高金价的杠杆效应，此前处于边际状态的露天矿坑在上升的金价环境中变得具有经济性，从而使储量矿山寿命增加了 5 年。在采用 $2,200 的金价假设（此前为 $1,750）下，Innes Mills、Coronation、Coronation North 和 Golden Bar 的额外露天矿坑扩帮具有经济性，这与 Golden Point 地下矿一起，将 Macraes 的矿山寿命延长至 2032 年。

Haile和Macraes的更新版National Instrument 43 – 101 – Standards of Disclosure for Mineral Projects（“NI 43 – 101”）技术报告将于2026年3月底前在SEDAR+上提交，并将包含仅基于矿产储量的矿山寿命计划、资本和成本估算。Didipio NI 43 – 101技术报告将于2026年上半年发布。

矿产储量

矿产储量总计 5.83 百万盎司，较上一年净减少 0.39 百万盎司（见图 1）。这一变化主要由 Haile 驱动，该处储量因消耗以及 LUG 采矿方法由露天开采转为地下开采而下降，后者剔除了利润率较低的露天矿存量，同时提升了整体资产净现值。这一影响被 Horseshoe 地下矿深部新增储量部分抵消。此外，更高的金价假设使 Macraes 得以新增多个露天矿阶段。

https://mma.prnewswire.com/media/2916222/OceanaGold_Corporation_OceanaGold_Reports_Mineral_Reserves_and_R.html 查看配图：Figure 1: Changes to Proven and Probable Reserves (CNW Group/OceanaGold Corporation)

注：

• “耗竭”指 2025 年的采矿耗竭。
• “储量模型更新”指针对储量或初始储量申报的钻探和/或模型更新。
• “经济因素”涉及金价、采矿成本和边界品位的变化。
• “调整”涉及未在其他类别中体现的变化。这包括LUG采矿方法的变更。

The Proven and Probable Mineral Reserves estimates as at December 31, 2025 are presented in Table 1 below.

注：

• 矿产储量依据以下假设的矿山设计进行界定：金价US$2,200/盎司、铜价US$4.00/磅、银价US$25/盎司；新西兰元/美元汇率为0.60。
• 所报告的所含金属估算值未扣除加工损失。
• 对于地下储量，边界品位适用于稀释后的品位。
• Mineral Reserves are reported on a 100% basis. OceanaGold holds an 80% attributable interest in the Didipio Mine.
• Haile：
  • 露天矿：主要边界品位为 0.5 g/t Au，而氧化矿物的边界品位定为 0.6 g/t Au。
  • 地下矿：边界品位为 1.86 g/t Au。
• Didipio：
  • 金当量（AuEq）基于所列金价和铜价以及选矿回收率计算。AuEq = Au 克/吨 + 1.27 x Cu%。
  • 13.2 Mt 地表堆存库存包括 5.3 Mt 低品位矿石，其开采边界品位约为 0.27 克/吨 AuEq。
  • 地下：采用 1.16 克/吨 AuEq 的边界品位。靠近已规划通往主要采场区域的开拓工程的增量采场，按较低的边界品位 0.76 克/吨 AuEq 报告。
• Macraes：
  • 露天开采：主要边界品位为 0.25 g/​t，而 Golden Bar 为 0.30 g/​t
  • 地下开采：Golden Point 边界品位为 1.08 g/​t Au。对于已具备通道的采场，按较低的边界品位 0.94 g/​t 报告。
• Waihi：
  • Martha 地下矿此前未开采的采场区域截止品位为 2.60 g/t Au，对于靠近残采矿区的采场区域则提高至 3.2 g/t Au。
  • Wharekirauponga 地下矿采场截止品位为 2.40 g/t Au。

矿产资源

探明及控制资源量（含储量）合计 8.63 百万盎司，较上年净减少 0.31 百万盎司（图 2）。这一变化主要由于所有矿山的开采消耗所致；在 Haile，资源量因 Ledbetter 采矿方法变更为地下开采而下降。Macraes 的增长部分抵消了这一减少，该处资源量因更高的金价假设使多个露天矿扩建成为可能而增加，其中 Innes Mills 和 Coronation 的模型更新带来的增量尤其促成了增长。其他增量来自 Haile 的 Horseshoe Underground 以及 Waihi，其中 Wharekirauponga 有所增加。

https://mma.prnewswire.com/media/2916223/OceanaGold_Corporation_OceanaGold_Reports_Mineral_Reserves_and_R.html 查看配图：Figure 2: Changes to Measured and Indicated Resources (CNW Group/OceanaGold Corporation)

注：这部分被Macraes的增长部分抵消，该处资源量增加，原因是更高的金价假设使多个露天矿得以扩建，其中Innes Mills和Coronation的模型更新带来的增量尤其促进了增长。其他增量来自Haile的Horseshoe Underground和Waihi，Wharekirauponga也有所增加。

• “耗竭”指 2025 年的采矿耗竭。
• “资源模型更新”指对储量或初始储量声明的钻探和/或模型更新
• “经济因素”涉及金价、采矿成本和边界品位的变化。
• “调整”涉及其他类别未涵盖的变化。

推断资源量总计 2.5 百万盎司，较上一年净增加 0.3 百万盎司（图 3）。这一增长主要来自 Waihi 的 Wharekirauponga 地下矿的新增资源量、Macraes 因金价上涨而进行的露天矿扩建，以及 Didipio 深部的新增资源量，抵消了推断资源量转换所导致的减少。

https://mma.prnewswire.com/media/2916224/OceanaGold_Corporation_OceanaGold_Reports_Mineral_Reserves_and_R.html 查看配图：Figure 3: Changes to Inferred Resources (CNW Group/OceanaGold Corporation)

注：见图 1的注释。

截至2025年12月31日的探明、控制及推断矿产资源量估算（含矿产储量）列于下方表2。

Notes:

• Mineral Resources are reported inclusive of Mineral Reserves. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability.
• All resources are based on the following assumptions: metal prices of US$2,450/​oz gold, US$4.50/​lb copper and US$28.50/​oz silver; NZD/USD exchange rate of 0.60.
• Macraes Open Pit resources are constrained by optimised shells based upon economic assumptions above. Waihi Open Pit resources reported within a pit design limited by infrastructural considerations. Haile Open Pit resources reported within the reserve design pit.
• Underground resources are reported within volumes guided by conceptual stope designs which are based upon economic assumptions above and exclude dilution.
• Mineral Resources are reported on a 100% basis. OceanaGold holds an 80% attributable interest in the Didipio Mine.
• Haile
  • Open Pit primary cut-off grade is 0.50 g/​t Au, while oxide cut-off grade is 0.60 g/​t Au. Horseshoe, Ledbetter and Palomino underground resources at 1.70 g/​t Au cut-off. 
• Didipio
  • 13.2 Mt surface stockpile inventory based on mining cut-off grades at the time ranging from 0.27 g/​t to 0.40 AuEq.
  • Underground resources reported at a cut-off grade of 0.67 g/​t AuEq between the 2,460mRL and 1,800mRL with AuEq cut-off grade based on presented gold and copper prices. AuEq = Au g/​t + 1.27 x Cu %. 
• Macraes
  • Open Pits cut-off grades between 0.25 g/​t Au and 0.40 g/​t Au.
  • Golden Point underground cut-off grade is 0.97 g/​t Au.
• Waihi
  • Martha underground cut-off grade is 2.15 g/​t Au, Wharekirauponga cut-off grade is 1.70 g/​t Au.
  • Martha Open Pit cut-off grade is 0.5 g/​t Au and Gladstone Open Pit cut-off grade is 0.56 g/​t Au. 

About OceanaGold

OceanaGold is a growing intermediate gold and copper producer committed to safely and responsibly maximizing the generation of Free Cash Flow from our operations and delivering strong returns for our shareholders. We have a portfolio of four operating mines: the wholly-owned Haile Gold Mine in the United States of America; the wholly-owned Macraes and Waihi operations in New Zealand; and the 80%-owned Didipio Mine in the Philippines.

For further information please contact:

Investor Relations:

Rebecca Henare, VP, Investor Relations
Tel: +1 604−678−4095
ir@​oceanagold.​com 

Valerie Burns, Manager, Investor Relations
Tel: +1 604−235−0742
ir@​oceanagold.​com 

Media Relations:

Louise Burgess, VP, Communications
Tel: +1 604−403−2019
media@​oceanagold.​com 

Notes to Mineral Reserves and Mineral Resources Estimates

All Mineral Reserves and Mineral Resources were estimated as of December 31, 2025 and have been prepared in accordance with NI 43 – 101.

Mineral Reserves and Mineral Resources estimates are reported on a 100% basis. OceanaGold holds an 80% attributable interest in the Didipio Mine. All tonnage, grade and contained metal content estimates have been rounded; rounding may result in apparent summation differences between tonnes, grade, and contained metal content. All $ references are in U.S. dollars.

Mineral Resources are reported inclusive of Mineral Reserves. Mineral Resources that are not Mineral Reserves do not have demonstrated economic viability. It is reasonably expected that the majority of Inferred Mineral Resources could be upgraded to Indicated Mineral Resources with continued exploration; however, there is no guarantee that all or any part of an Inferred Mineral Resource will ever be upgraded to a higher category.

The Mineral Resource estimates for Haile open pit and Horseshoe underground have been verified and approved by, or is based on information prepared by, or under the supervision of, J. Moore, the Company’s Head of Resource Development. The Mineral Resource estimates for the Haile Palomino and Ledbetter undergrounds have been verified and approved by, or is based on information prepared by, or under the supervision of, D. Corley, the Company’s Principal Resource Geologist. The Mineral Reserves estimate for Haile open pits has been verified and approved by, or is based on information prepared by, or under the supervision of, G. Hollett, the Company’s Head of Mine Engineering and the Mineral Reserves estimate for Haile underground has been verified and approved by or is based upon information prepared by, or under the supervision of, B. Drury, Superintendent – Engineering Services (underground), Haile.

The Mineral Resources estimate for Didipio has been verified and approved by, or is based on information prepared by, or under the supervision of, J. Moore, while the Mineral Reserves estimate for Didipio underground has been verified and approved by or is based upon information prepared by, or under the supervision of, P. Jones, the Company’s Head of Underground Mining. 

The Mineral Resources estimate for Macraes open pit and underground operations has been verified and approved by, or is based on information prepared by, or under the supervision of, M. Grant, the Company’s Senior Geologist – Resource Development, Macraes. The Mineral Reserves estimate for Macraes open pits has been verified and approved by, or is based on information prepared by, or under the supervision of, K. Madambi, the Company’s Manager – Technical Services & Projects, Macraes. The Mineral Reserves estimate for Macraes underground has been verified and approved by, or is based upon information prepared by, or under the supervision of, E. Leslie, the Company’s Group Mining Engineer.

The Mineral Resources estimate for Waihi’s Wharekirauponga underground, Martha underground, Gladstone open pit and Martha Open Pit has been verified and approved by, or is based on information prepared by, or under the supervision of, L. Crawford-Flett, the Company’s Manager – Exploration and Geology, Waihi. The Mineral Reserves estimate for Martha underground has been verified and approved by, or is based on information prepared by, or under the supervision of, D. Townsend, the Company’s Manager – Mining (Underground), Waihi. The Mineral Reserves estimate for the Wharekirauponga underground has been verified and approved by, or is based upon information prepared by, or under the supervision of, E. Leslie, the Company’s Group Mining Engineer.

All such persons noted above are ​“qualified persons” for the purposes of NI 43 – 101. Messrs. Crawford-Flett, Madambi, Jones, Leslie, Moore and Townsend are Members and Chartered Professionals with the Australasian Institute of Mining and Metallurgy. Messrs. M. Grant and D. Corley are members of the Australian Institute of Geoscientists. Mr. Hollett is a Professional Engineer registered with Engineers and Geoscientists of British Columbia. Ms. Drury is a Registered Member with the Society of Mining, Metallurgy & Exploration.

For further scientific and technical information supporting the disclosure in this news release (including disclosure regarding Mineral Resources and Mineral Reserves, data verification, key assumptions, parameters, methods used to estimate the Mineral Resources and Mineral Reserves, and risks and other factors), please refer to the following NI 43 – 101 technical reports available on the SEDAR+ website at www​.sedarplus​.com under the Company’s name:

1. “NI 43 – 101 Technical Report Macraes Gold Mine Otago, New Zealand” dated March 28, 2024 with an effective date of December 31, 2023, prepared by M. Grant, J. Moore, K. Madambi, E. Leslie and D. Carr (OceanaGold);
2. “NI 43 – 101 Technical Report Didipio Gold / Copper Operations Luzon Island, Philippines” dated March 31, 2022 with an effective date of December 31, 2021, prepared by D. Carr, P. Jones, and J. Moore (OceanaGold);
3. “NI 43 – 101 Technical Report – Waihi District Pre-feasibility Study, New Zealand” dated December 11, 2024 with an effective date of June 30, 2024, prepared by D. Townsend, L. Crawford-Flett, K. Hollis, E. Leslie, and T. Maton (OceanaGold); and
4. “NI 43 – 101 Technical Report Haile Gold Mine Lancaster County, South Carolina” dated March 28, 2024 with an effective date of December 31, 2023, prepared by D. Carr, D. Londono, J. Moore and B. Drury (OceanaGold), L. Standridge and R. Cook (Call & Nicholas, Inc.), J. Newton Janney-Moore and W. Lucas Kingston (NewFields Mining & Technical Services LLC) and M. Sullivan and B. Miller Clarkson (SRK Consulting (U.S.), Inc.).

Cautionary Statement Regarding Mineral Resources and Mineral Reserves

The scientific and technical disclosure in this news release has been prepared in accordance with NI 43 – 101, which differs from the scientific and technical disclosure requirements of the United States Securities and Exchange Commission (“SEC”) applicable to United States domestic companies. Accordingly, Mineral Resource and Mineral Reserve information and other scientific and technical information contained or referenced in this news release may not be comparable to similar information disclosed by United States companies subject to the scientific and technical disclosure requirements of the SEC. Historical results or feasibility models presented herein are not guarantees or expectations of future performance.

Cautionary Statement Regarding Forward-Looking Information

This news release contains certain ​“forward-looking statements” and ​“forward-looking information” (collectively, ​“forward-looking statements”) within the meaning of applicable Canadian securities laws which may include, but is not limited to, statements with respect to: the future price of gold; the future financial and operating performance of the Company and its mining projects; the estimation of Mineral Reserves and Mineral Resources; the realization of Mineral Reserves and Mineral Resources estimates; estimates of exploration expenditures, costs and timing of future exploration programs; timing of filing of updated technical information, including each of the Haile, Macraes and Didipio technical reports; estimated mine life of the Company’s operations, including an extension to the mine life at Macraes to 2032; the expected increase in NPV at Haile; the timing for portal construction, first development ore and steady-state production at LUG; the timing for first ore from PUG; the production profile at Haile from 2027 through 2031; the timing for continued open pit mining at Haile; and information relating to future performance. Forward-looking statements relate to future performance and reflect the Company’s expectations regarding the execution of business strategy, future growth, future production, estimated costs, results of operations, business prospects and opportunities of OceanaGold and its related subsidiaries. Any statements that express or involve discussions with respect to predictions, expectations, beliefs, plans, projections, objectives, assumptions or future events or performance (often, but not always, using words or phrases such as ​“expects” or ​“does not expect”, ​“is expected”, ​“anticipates” or ​“does not anticipate”, ​“plans”, ​“estimates” or ​“intends”, or stating that certain actions, events or results ​“may”, ​“could”, ​“would”, ​“might” or ​“will” be taken, occur or be achieved) are not statements of historical fact and may be forward-looking statements.

Forward-looking statements involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements of the Company to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements.Such risks include, among others, the accuracy of Mineral Reserves and Mineral Resources estimates and related assumptions, inherent operating risks and those risk factors identified and described in more detail in the section entitled ​“Risk Factors” contained in the Company’s most recent Annual Information Form and the Company’s other filings with Canadian securities regulators, which are available on SEDAR+ at www​.sedarplus​.com under the Company’s name. There are no assurances the Company can fulfil forward-looking statements. This list is not exhaustive of the factors that may affect the Company’s forward-looking statements.

The Company’s forward-looking statements are based on the applicable assumptions and factors Management considers reasonable as of the date hereof, based on the information available to Management at such time. These assumptions and factors include, but are not limited to, assumptions and factors related to: the Company’s ability to carry on current and future operations, including development and exploration activities, the timing, extent, duration and economic viability of such operations, including any Mineral Resources or Mineral Reserves identified thereby, the accuracy and reliability of estimates, projections, forecasts, studies and assessments, the Company’s ability to meet or achieve estimates, projections and forecasts; the availability and cost of inputs; the price and market for outputs, including gold; foreign exchange rates; taxation levels; the timely receipt of necessary approvals or permits; the ability to meet current and future obligations; the ability to obtain timely financing on reasonable terms when required; the current and future social, economic and political conditions; and other assumptions and factors generally associated with the mining industry.

The Company’s forward-looking statements are based on the opinions and estimates of Management and reflect their current expectations regarding future events and operating performance and speak only as of the date hereof. The Company does not assume any obligation to update forward-looking statements if circumstances or Management’s beliefs, expectations or opinions should change other than as required by applicable law. There can be no assurance that forward-looking statements will prove to be accurate, and actual results, performance or achievements could differ materially from those expressed in, or implied by, these forward-looking statements. Accordingly, no assurance can be given that any events anticipated by the forward-looking statements will transpire or occur, or if any of them do, what benefits or liabilities the Company will derive therefrom. For the reasons set forth above, undue reliance should not be placed on forward-looking statements.

https://mma.prnewswire.com/media/2916221/OceanaGold_Corporation_OceanaGold_Reports_Mineral_Reserves_and_R.html 查看配图：OceanaGold Logo (CNW Group/OceanaGold Corporation)

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