Angold Discovers Carlin-Style Alteration at Iron Butte, Deploys RC Rig
Angold Discovers Carlin-Style Alteration at Iron Butte, Deploys RC Rig
Vancouver, British Columbia--(Newsfile Corp. - August 16, 2022) - Angold Resources Ltd. (TSXV: AAU) (FSE: 13L) (OTCQB: AAUGF) ("Angold" or the "Company") is pleased to provide an update of drilling at its Iron Butte Project, located approximately 60 km south of Battle Mountain, Nevada.
温哥華,不列顛哥倫比亞省-(Newsfile Corp.-2022年8月16日)-安金資源有限公司 (多倫多證券交易所:AAU)(證券交易所:13L)(OTCQB:AAUGF)("安金“或”公司“)很高興提供其位於內華達州巴特山以南約60公里的鐵巴特項目的最新鑽探情況。
Drilling Highlights
鑽探亮點
- Drillhole AAU22-001 was stopped at 273 metres (894.5') depth due to lost tooling, and has been redrilled as AAU22-001A, as PQ-HQ core;
- In hole AAU22-001A, the Company drilled into a shear zone, hosted by dolomitic and siliceous siltstone, with pyrite and carbon, some fine quartz veinlets and continued within Carlin-style alteration (decalcification and dolomitization) at the proposed termination depth of 670 metres (2,200');
- AAU22-001A was continued with a reduction to NQ core to a termination depth of 710 metres (2,329');
- Alteration at the TD of 710 metres (2,329') remains open;
- Core samples from AAU22-001 and AAU22-001A await assay results;
- The Company will complete the planned 2,926 metre (9,600') drill program with a TH-75 reverse circulation ("RC") drill rig that will be deployed to site shortly, and meets the Company's requirement to drill up to 1,000 metres from surface.
- AAU22-001號井因工具丟失在273m(894.5‘)深度停鑽,重新鑽成AAU22-001A型井,為PQ-HQ巖心;
- 在AAU22-001A孔,公司鑽進了以白雲巖和硅質粉砂巖為主體的剪切帶,含黃鐵礦和碳,以及一些細小的石英細脈,並繼續在卡林式蝕變(脱鈣和白雲石化)內繼續進行,擬議終止深度為670米(2,200‘);
- 繼續AAU22-001a,將NQ巖心的終端深度減少到710米(2329‘);
- 運輸署710米(2,329‘)的改建工程仍在進行中;
- AAU22-001和AAU22-001a的巖心樣品等待檢測結果;
- 公司將使用TH-75型反循環(RC)鑽機完成計劃中的2926米(9600‘)鑽探計劃,不久將部署到現場,滿足公司在離地面1000米處進行鑽探的要求。
Adrian Rothwell, President & Chief Executive Officer, said, "Despite difficult drilling in broken ground, drilling has indicated the potential presence of significant alteration in targeted geophysical and fault structures, in a geological setting never before tested and with surprisingly positive results at the planned termination of our first hole at ~2,200'. We are cautiously optimistic for assay results, which we expect in the next few weeks."
總裁&首席執行官禤浩焯·羅斯韋爾表示,儘管在破碎的地面上鑽探很困難,但鑽探表明,目標地球物理和斷層結構可能存在重大變化,地質環境從未進行過測試,計劃在2,200英尺處終止第一個孔時,結果出人意料地積極。我們對化驗結果持謹慎樂觀態度,我們預計未來幾周內會有化驗結果。
Angold has now completed logging of the core from AAU22-001 and AAU22-001A. The observations and data from the completed logging are consistent with the Company's exploration model within the Red Ridge Zone of the project, confirming a discovery of Carlin-style alteration below Ordovician Valmy Formation (see Figure 2), part of the Roberts Mountains Thrust plate, which appears to be continuous along a 6 km (~3.7 mi) strike length from Red Ridge Zone to the Northern Extension Zone. This supports the Company's interpretation of geophysical results from the Company's 2021 pre-drilling program demonstrating a large MT and IP anomaly at target depths. See the Company's previous news releases on April 19, 2022 and February 22, 2022.
AnGold現在已經完成了AAU22-001和AAU22-001a巖心的測井。完成測井的觀測和數據與公司在該項目紅脊地帶的勘探模式一致,證實在羅伯茨山脈逆衝板塊的一部分奧陶系瓦爾米組(見圖2)下方發現了卡林式蝕變。從紅脊帶到北部延伸帶的6公里(~3.7英里)走向似乎是連續的。這支持了公司對公司2021年鑽探前計劃的地球物理結果的解釋,該計劃顯示了目標深度的大型大地電磁異常和激電異常。見該公司之前於2022年4月19日和2022年2月22日發佈的新聞稿。
Drillhole AAU22-001 was stopped in late May at 273 metres (894.5') due to hole caving at ~183 metres (~600'), which Angold's drill contractor believes was the result of challenges associated with voids within the bedrock, sanded and broken ground in the upper plate zone. Drilling restarted on same pad with drillhole AAU22-001A, successfully installed PQ-sized drill rods to a depth of 251 metres (824') to effectively case off through the challenging interval, and continued to core drill with HQ rods to 514 metres (1,687') and NQ to the termination of the hole at 710 metres (2,329'). AAU22-01A was terminated below target depth within highly altered and fractured dolomitic siltstone, with decalcification, dolomitization, fine pyrite and carbon representing Carlin-style epithermal alteration (see Image 2).
Aau22-001號鑽孔在5月下旬因~183米(~894.5‘)處的鑽孔坍塌而停止,AnGold的鑽探承包商認為這是與基巖內的空洞、上板塊區域的砂礫和破碎地面相關的挑戰的結果。隨着AAU22-001a鑽孔在相同的墊板上重新開始鑽井,成功地將PQ尺寸的鑽桿安裝到251米(824‘)的深度以有效地通過具有挑戰性的區間,並繼續使用HQ鑽桿和NQ鑽桿取心鑽頭至514米(1,687’)和NQ至710米(2,329‘)的井底。AAU22-01a終止於目標深度以下的高度蝕變和破碎的白雲質粉砂巖中,有脱鈣、白雲石化、細粒黃鐵礦和碳代表卡林式淺成熱液蝕變(見圖2)。
Core Logging Summary
Drilling to date within and at depth below the Red Ridge zone encountered many epithermal quartz vein-veinlet zones displaying polyphase banding, some quartz after calcite pseudomorphs, and, in some cases, silver sulfide-selenide mineral (acanthite-aguilarite-naumannite) grains in specific bands. These textures and minerals together demonstrate the fertility of the system at this level and provide encouragement for significant precious metals potential at depth, where a boiling horizon in an idealized low-sulfidation epithermal system could occur.
巖心測井摘要
到目前為止,在紅脊帶內和之下的鑽探遇到了許多淺成熱液石英脈細脈帶,顯示出多相條帶狀,一些石英在方解石假象之後,在某些情況下,特定條帶中的銀硫化物-硒礦物(針鐵礦-針鐵礦-紐曼礦)顆粒。這些結構和礦物共同證明瞭該系統在這一水平上的肥力,並鼓勵在深部具有顯著的貴金屬潛力,在那裏可能會出現理想的低硫化淺成熱液系統中的沸騰地層層。
Logging shows several areas with good potential for Au-Ag mineralization between 266 metres and 443 metres (874' and 1,452'), which is the main targeted area within this hole (Image 1). Abundant disseminated sulfides correlate well with the strong chargeability anomaly being tested, along with quartz veining in an interpreted steeply dipping structure from the MT section. Localized strong sooty sulfide-silica appears especially prospective. Of surprise and note is the apparent Carlin-style alteration starting at 428 metres (1,403'), which also correlates with the projected triple intersection of mineralized faults mapped at surface.
記錄顯示,在266米至443米(874‘至1,452’)之間有幾個具有良好金銀礦化潛力的區域,這是該孔內的主要目標區(圖1)。豐富的浸染性硫化物與測試的強充電性異常以及來自MT剖面的解釋的急傾斜構造中的石英脈很好地關聯。局部化的強煤煙硫化物-二氧化硅顯得特別有前景。令人驚訝和值得注意的是,從428米(1,403‘)開始的明顯的卡林式蝕變,也與在地表繪製的礦化斷層的預測三重交叉相關聯。
Rock chip samples at surface in the Red Ridge zone, comprised of breccias and banded veinlets, have demonstrated silver grades to 600 g/t and gold grades to 4 g/t. It is encouraging to see silver sulfides at depth in veins within the same zone.
紅嶺帶地表巖屑樣品由角礫巖和條狀細脈組成,銀品位達600克/噸,金品位達4克/噸。在同一帶內的礦脈中發現深部的銀硫化物是令人鼓舞的。
Stratigraphy, Alteration and Oxidation
The high-angle faults and fractures seen in AAU22-001/AAU22-001A are associated with both intense oxidation, silicification and hydrothermal argillic alteration, evidencing the importance of these high-angle features in supporting and focusing vertical fluid flow along the margin of the Cateano Caldera. Importantly, as seen in AAU22-001A, the Carlin-style alteration features are contained within the Upper Plate of and may also be below the Roberts Mountains Thrust, supporting Angold's geologic model of an extensive Eocene-Oligocene hydrothermal system, consistent with the timing of Nevada's Carlin-type mineralizing events (approximately 40 - 35 Mya) and younger alteration-mineralization hosted in Oligocene Caetano Tuff (32-30 Ma).
地層、蝕變和氧化作用
在AAU22-001/AAU22-001a中發現的高角度斷層和裂縫與強烈的氧化、硅化和熱液泥化蝕變有關,證明瞭這些高角度特徵在支持和集中沿卡特諾火山口邊緣的垂直流體流動方面的重要性。重要的是,正如在AAU22-001A中所看到的,卡林式蝕變特徵包含在羅伯茨山脈逆衝斷層的上板塊內,也可能在羅伯茨山脈逆衝帶之下,支持AnGold的廣泛的始新世-漸新世熱液系統的地質模型,與內華達州卡林型礦化事件(約40-35Mya)和賦存於漸新世Caetano凝灰巖(32-30 Ma)的年輕蝕變礦化的時間一致。
The alteration products of the fracture-controlled fluid flow - projected to be travelling upwards and into the Antler Overlap Sequence, below the Golconda Thrust (the upper mineralized zone at the project) - are associated with the highly anomalous, sooty sulfides and green illite clay. Importantly, these sulfide concentrations along the fractures generally increase with depth within the Carlin-style alteration in dolomitic rocks encountered at the bottom of AAU22-01A. It is not clear at this time if the altered carbonate rocks encountered at the bottom of AAU22-01A are within the Roberts Mountains Thrust or below it. The shearing and alteration encountered is not likely to allow age dating of these carbonate rocks, which would be required to unequivocally say whether these rocks are Lower Plate carbonates or carbonate rocks within the Upper Plate of the Roberts Mountains Thrust (Valmy or Cormus).
斷裂控制的流體流動的蝕變產物--預計向上移動並進入鹿角疊覆層序,位於戈爾孔達逆衝斷層(該項目的上部礦化帶)下方--與高度異常的煙塵狀硫化物和綠色伊利石粘土有關。重要的是,這些沿着裂縫的硫化物濃度通常隨着AAU22-01a底部遇到的白雲巖中卡林式蝕變內的深度而增加。目前還不清楚在AAU22-01a底部遇到的蝕變碳酸鹽巖是在羅伯茨山脈逆衝推覆還是在其下方。所遇到的剪切和蝕變不太可能對這些碳酸鹽巖進行年齡測定,這將需要明確地説出這些巖石是下盤碳酸鹽還是羅伯茨山脈逆衝上板塊(Valmy或Cormus)內的碳酸鹽巖。
Geology and Structure
The results of Angold's drill program confirm that gold-silver mineralization is believed to be controlled by a series of north-south, north-northeast and east-west structures that host silicification and epithermal quartz-pyrite-gold-silver mineralization within Pennsylvanian to Permian siltstones and argillites of the Cedars Sequence (Havallah) and Oligocene felsic volcanic rocks (Caetano Tuff). Mineralization is completely oxidized from surface up to 175 metres depth and continues as sulphides to depths beyond 250 metres. Mineralization is also disseminated between veins, silicified structures and brecciated zones, and can occur as silicified breccia zones at the contact between volcanic and underlying sedimentary rocks. Opaline silica, bladed quartz-chalcedony after calcite, polyphase banded quartz veins and natroalunite veins are exposed at surface, supporting the deduction that the epithermal system at Iron Butte is largely intact. Surface rock chip and soil sampling assay results also support this deduction, with highly elevated mercury, selenium and arsenic present. Quartz textures, alteration and mineralogy described support a low-sulfidation epithermal model, which will be used to guide-inform future exploration efforts at Iron Butte.
地質和構造
AnGold的鑽探計劃結果證實,金銀礦化被認為受控於一系列北-南、北-東北和東西向構造,這些構造賦存於賓夕法尼亞至二疊紀錫達斯序列(Havallah)和漸新世長英質火山巖(Caetano Tuff)的粉砂巖和泥質巖中的硅化和低温石英-黃鐵礦-金銀礦化。礦化從地表到175米深度被完全氧化,並以硫化物的形式持續到250米以上的深度。礦化還分佈在礦脈、硅化構造和角礫巖帶之間,並可作為硅化角礫巖帶出現在火山巖和下伏沉積巖的接觸處。地表露出乳白色二氧化硅、方解石後的片狀石英玉髓、多相條帶狀石英脈和鈉長石脈,支持鐵角巖的低温熱液系統基本完好的推斷。地表巖屑和土壤採樣分析結果也支持這一推論,汞、硒和砷的含量都很高。所描述的石英結構、蝕變和礦物學支持低硫化淺成熱液模型,該模型將用於指導未來在Iron Butt的勘探工作。
Figure 1: Cross-sections of some selected drill holes in Phase 1A program, including AAU22-001/001A.
圖1:包括AAU22-001/001A在內的一些選定的1A階段計劃中鑽孔的橫截面。
Figure 2: Interpreted major structure and stratigraphy below the Red Ridge zone encountered in core holes AAU22-01 and 01A. Dashed yellow line represents the depth of all historic drilling at Red Ridge. Units encountered are: Qa: Quaternary alluvium; Trt: Oligocene rhyolite tuff; PPhs: Pennsylvanian-Permian Havallah shale-siltstone; PPhcs: Pennsylvanian-Permian Havallah calcareous sandstone-siltstone; Pzol: Permian Overlap Assemblage conglomerate-sandstone; Ovcas: Ordovician Valmy chert-argillite-siltstone; Ovqa: Ordovician Valmy quartzite-argillite; Pzcb: Paleozoic carbonate rock- dolomitic siltstone-limestone. Yellow blocks A and B represent locations of core photographs provided below.
圖2:在AAU22-01和01a巖心孔中遇到的紅脊地帶以下的主要構造和地層解釋。黃色虛線代表紅嶺所有歷史性鑽探的深度。遇到的單元有:Qa:第四紀沖積巖;Trt:漸新世流紋巖凝灰巖;PPhs:賓夕法尼亞-二疊系哈瓦拉頁巖-粉砂巖;PPhcs:賓夕法尼亞-二疊系哈瓦拉鈣質砂巖-粉砂巖;Pzol:二疊系超覆組合礫巖-砂巖;Ovcas:奧陶系Valmy硅質巖-泥質巖-粉砂巖;Ovqa:奧陶系Valmy石英巖-泥質巖;Pzcb:古生代碳酸鹽巖-白雲質粉砂巖-灰巖。黃色方塊A和B代表下面提供的巖心照片的位置。
Image 1: AAU22-01A 1141'-1161': Strong silicification-sooty sulfide along margins of sulfidized mafic dike or sill, within Overlap Assemblage conglomerate-sandstone (Pzol). These pictures correspond with yellow block A in Figure 2.
圖1:AAU22-01A1141‘-1161’:強烈的硅化作用--硫化鎂鐵質巖脈或巖牀邊緣的煤質硫化物,位於礫巖-砂巖(Pzol)的重疊組合內。這些圖片對應於圖2中的黃色方塊A。
Image 2: AAU22-01A 2279'-2329': Decalcified-silicified dolomitic siltstone-limestone (Pzcb) with fine pyrite, dolomite veinlets and carbon slicks. Hole was terminated in dolomite matrix breccia with increased pyrite content. These pictures correspond with yellow block B in Figure 2.
圖2:AAU22-01A2279‘-2329’:脱鈣硅化白雲質粉巖灰巖(Pzcb),含有細小的黃鐵礦、白雲石細脈和碳片。隨着黃鐵礦含量的增加,孔洞終止於白雲巖基質角礫巖中。這些圖片對應於圖2中的黃色方塊B。
Qualified Person
Clyde Smith, PhD, P.Eng., a Qualified Person in accordance with National Instrument 43-101, is responsible for supervising the exploration programs at the Company's projects and has reviewed and approved the technical information contained in this news release.
有資格的人
Clyde Smith,Phd,P.Eng是符合National Instrument 43-101標準的合格人員,負責監督公司項目的勘探計劃,並已審查和批准本新聞稿中包含的技術信息。
About Angold
安戈德公司簡介
Angold is an exploration and development company targeting large-scale mineral systems in the proven districts of the Maricunga Gold Belt in Chile, Nevada and Ontario. Angold owns a 100% interest in the Dorado, Cordillera and South Bay-Uchi projects, and certain claims that append the optioned Iron Butte project.
AnGold是一家勘探和開發公司,目標是智利、內華達州和安大略省Maricunga金礦帶探明地區的大型礦產系統。AnGold擁有Dorado、Cordillera和South Bay-Uchi項目的100%權益,並擁有某些附加於可選的Iron Butte項目的權利。
ON BEHALF OF THE BOARD OF ANGOLD RESOURCES LTD.
代表安金資源有限公司董事會。
"Adrian Rothwell"
Chief Executive Officer
《禤浩焯·羅斯威爾》
首席執行官
Further information on Angold can be found on the Company's website at and at , or by contacting the Company by email at investors@angoldresources.com or by telephone at (855) 917 4091.
欲瞭解有關安金公司的更多信息,請訪問公司網站,網址為:,或通過電子郵件(Investors@angoldresource ces.com)或電話(855)917 4091與公司聯繫。
This news release shall not constitute an offer to sell or a solicitation of an offer to buy, nor shall there be any sale of these securities in any jurisdiction in which an offer, solicitation or sale would be unlawful prior to registration or qualifications under the securities laws of any such jurisdiction.
本新聞稿不應構成出售要約或徵求購買要約,也不應在任何司法管轄區出售這些證券,如果在任何司法管轄區的證券法規定的註冊或資格之前,要約、徵求或出售是非法的。
Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release.
多倫多證券交易所創業板交易所及其監管服務提供商(該術語在多倫多證券交易所的政策中定義)均不對本新聞稿的充分性或準確性承擔責任。
Forward-Looking Statements: This news release contains forward-looking statements and forward-looking information within the meaning of applicable securities laws. These statements relate to future events or future performance and includes expectations of the resumption of trading of the Company's common shares on the Exchange. All statements other than statements of historical fact may be forward-looking statements or information. Forward-looking statements and information are often, but not always, identified by the use of words such as "appear", "seek", "anticipate", "plan", "continue", "estimate", "approximate", "expect", "may", "will", "project", "predict", "potential", "targeting", "intend", "could", "might", "should", "believe", "would" and similar expressions. Forward-looking statements and information are provided for the purpose of providing information about the current expectations and plans of management of the Company relating to the future. Readers are cautioned that reliance on such statements and information may not be appropriate for other purposes, such as making investment decisions. Since forward-looking statements and information address future events and conditions, by their very nature they involve inherent risks and uncertainties. Actual results could differ materially from those currently anticipated due to a number of factors and risks. Accordingly, readers should not place undue reliance on the forward-looking statements, timelines and information contained in this news release.
前瞻性陳述:本新聞稿包含符合適用證券法的前瞻性陳述和前瞻性信息。這些陳述與未來事件或未來業績有關,包括對公司普通股在聯交所恢復交易的預期。除歷史事實以外的所有陳述都可能是前瞻性陳述或信息。前瞻性陳述和信息常常但不總是通過使用諸如“出現”、“尋求”、“預期”、“計劃”、“繼續”、“估計”、“近似”、“預期”、“可能”、“將”、“項目”、“預測”、“潛在”、“目標”、“打算”、“可能”、“可能”、“應該”、“相信”、“將”和類似的表達方式來確定。提供前瞻性陳述和信息的目的是提供有關公司目前對未來管理層的期望和計劃的信息。提醒讀者,依賴此類報表和信息可能不適合用於其他目的,如做出投資決定。由於前瞻性陳述和信息涉及未來的事件和情況,它們本身就具有內在的風險和不確定性。由於一些因素和風險,實際結果可能與目前預期的結果大不相同。因此,讀者不應過分依賴本新聞稿中包含的前瞻性聲明、時間表和信息。
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