Navarre Creek Geophysical Results

RNS Number : 9024Z

Phoenix Copper Limited

28 January 2022

 

Phoenix Copper Limited / Ticker: PXC / Sector: Mining

28 January 2022

Phoenix Copper Limited

('Phoenix' or the 'Company')

Navarre Creek Geophysical Results

Phoenix Copper Ltd (AIM: PXC, OTCQX ADR: PXCLY), the AIM-quoted USA-focused base and precious metals emerging producer and exploration company, is pleased to provide the results from its ground-based field magnetics survey and airborne hyperspectral mineral survey at the Company's Navarre Creek project in Custer County, Idaho, USA.

Highlights

· 169-line kilometres ('km') of ground-based total field magnetics and airborne hyperspectral imaging completed for the entirety of the Navarre Creek claim block

· Two distinct intrusive bodies identified, partially concealed below glacial till showing strong magnetic signatures which complement the existing jasperoid outcrops

· A northeast trending, approximately 2.3-mile-long by 1-mile-wide corridor of hydrothermal alteration also identified, consistent with the gold and silver bearing Carlin-style epithermal deposits

· Markers for Carlin-style gold deposits are the presence of jasperoids, and the association of gold, antimony, silver and zinc. These markers are found at Navarre Creek and may signify the potential for this style of deposit

· The results of these surveys, together with the results of previous exploration, highlight the prospectivity of the claim block.  These positive results will drive further exploration and drill targeting in 2022

Ryan McDermott, Chief Executive Officer, said, "I am excited to finally report the results of two geophysical surveys conducted at our Navarre Creek property this past summer, a ground-based field magnetics survey and an airborne hyperspectral mineral survey. Both surveys covered the entirety of the 3,577-acre claim block, including the 1,054 acres of additional claims filed in July 2021, and identified two magnetic bodies partially concealed below glacial till and overburden, a roughly 2.3-mile-long by 1-mile-wide zone of hydrothermal alteration similar to that associated with Carlin-style epithermal deposits in the western US. The results confirm the geological and geochemical testing results reported by the Company from previous field studies, in particular the iron-rich Lehman Fault and Bear Cave gossan.   

"The geophysical results coincide well with the previous mapping and sampling conducted by the Phoenix team, as well as with the findings of the Idaho Geological Survey reported in " Geology and Geochemistry of Jasperoid Near Mackay, Idaho" 1988, Bulletin 27. This report states "Hydrothermal solutions that formed the jasperoids may also have formed large low-grade precious metal deposits within the jasperoid bodies or within altered country rocks associated with the jasperoids." Jasperoids and the association of gold, antimony, silver, copper and zinc, as found at Navarre Creek, can be the signatures of precious metal deposits. We believe the Navarre Creek area to be quite remarkable, with the combination of iron-rich faults and gossans, jasperoid bodies, and favourable surface geochemistry all supported by the results of the latest geophysical surveys.

"We developed an exploration model at Navarre targeting the geology, geochemistry, and geophysics typical of epithermal precious metal deposits.  Our findings thus far, including the recent geophysical results, support our exploration model and will provide the basis for further exploration, including a planned drilling program in 2022. In addition to the evaluation of these latest Navarre Creek results, we continue to focus our efforts on the Empire Open-Pit copper oxide feasibility study, scheduled for completion in Q2 of this year, and with the ongoing permitting of the Empire copper-oxide open pit."

Navarre Creek Geology, Geochemistry, and Geophysics 

During the 2021 field season, Phoenix contracted Magee Geophysical Services to acquire approximately 169 line-km of total field magnetic measurements at the Company's Navarre Creek project and SpecTIR, LLC of Reno, Nevada to complete an airborne hyperspectral survey of the same Navarre Creek area to identify prospective exploration targets in an area, many of which are largely concealed by glacial till.

The ground magnetics survey looked specifically for magnetite and magnetic-bearing minerals, some of which have been identified in limited outcroppings, while the hyperspectral imaging helps to identify alteration minerals often associated with precious metal deposition.

Hyperspectral imaging incorporates a small airplane with mounted infrared lights and sensors to detect a wide range of wavelengths, mineral absorption and reflectance within the target area. The wavelength data collected in this survey are VNIR (Visible and Near-Infrared), SWIR (Short-Wave Infrared), and LWIR (Long-Wave Infrared). The human eye can detect wavelengths (colors) from 390 nanometers ('nm') to 700nm. The VNIR and SWIR sensors collected wavelength data from 390nm to 2,450nm, while the LWIR sensors ranged from 8,000nm to 12,000nm.

The Navarre Creek project is located within an intrusive dome complex, where the magnetic components in overlying volcanic lithologies is destroyed by silicic alteration associated with steam-heated, acidic, and oxidized hydrothermal fluids. The survey highlighted several such areas including the Lehman Creek fault, one or more porphyry plugs, and several contacts/faults.

The survey identified volcanic associated alteration that is both acidic and of fairly high temperature as evidenced by pyrophyllite and dickite. As would be expected in the Challis Volcanic Field, the white mica is Al-rich (paragenetic) and also shows zoned crystallinity patterns, typical of intermediate-to-high sulfidation systems and is likely proximal to a magmatic heat source. The presence of iron oxide associated with some of these zones adds prospectivity. The alteration pattern is useful in developing an exploration model to optimise future drill targets.

During the summer of 2020, Konnex Resources' exploration team mapped and sampled the Company's Navarre Creek gold property, which was then comprised of 2,420 acres of unpatented mining claims, located approximately five kilometres north-northwest of the Empire Mine.  90 rock chip and grab samples were collected in the hydrothermally altered volcanic rocks that make up the Navarre Creek claims and sent to ALS Laboratories in Reno, USA for geochemical analysis.

Of the 90 samples, 53 were above the detection limit for gold with a high of 0.569 grammes per tonne ('g/t'), and 25 above the detection limit for silver.  There was also a strong correlation between elevated gold values and elevated antimony values, typical of epithermal gold and silver systems in the western US.  With the exception of one sample, all samples with a gold value greater than 0.1 g/t occurred within the same alteration type, that being predominantly a jasperoid-hosted quartz stockwork and micro-veining system. This provides valuable information for future sampling and drill targeting.  The quartz stockworking and micro-veining appear to occur predominantly in felsic volcanic tuff units in the Navarre Creek area.  One anomalous sample, 32519, registered a gold value of 0.387 g/t, in a magnetite skarn sample located on the southern end of the Navarre Creek claim block where the skarn body is exposed as subcrop through the surface volcanics tuffs. Additionally, the presence of limestone in surface float near the skarn sample location is evidence that the Paleozoic sedimentary rocks that occur at the Empire Mine may be near the surface.  The Empire orebody is partly comprised of a magnetite skarn body hosted in Paleozoic limestone.  It was also noted that volcanic outcropping across the Navarre Creek area is strongly weathered and highly leached to depths of two to four metres.

The Navarre Creek claim block now covers 3,577 acres (14.48 km²), representing over six kilometres of prospective strike length, including an area of secondary alteration thought to be epithermal in nature, with over 2.5-kilometres of highly brecciated, west-trending jasperoid intersecting argillically and silicically altered Eocene Challis volcanics.

Qualified Person

The foregoing technical information in this news release has been reviewed and verified by Zachary J. Black, SME-RM, General Manager. Mr. Black is a resource geologist with more than 17 years of domestic and international experience in the mining and construction industries. Mr. Black has a degree in Geological Engineering from the University of Nevada, Reno and is a registered member of the Society for Mining, Metallurgy, and Exploration, Inc. He is a Qualified Person under the AIM Rules. Mr. Black consents to the inclusion of the information in the form and context in which they appear.

Environmental, Social, and Corporate Governance

Phoenix is committed to meeting and exceeding the environmental standards required by law as a core value of the Company.  The baseline environmental data collected to date will be used for furthering the permitting process, but as importantly, will be used as the building blocks for the Company's ongoing Environmental, Social, and Corporate Governance (ESG) platform, overseen by the Company's ESG & Sustainability Committee.

Market Abuse Regulation (MAR) Disclosure

The Company deems the information contained within this announcement to constitute inside information as stipulated under the Market Abuse Regulations (EU) No. 596/2014, which has been incorporated into UK law by the European Union (Withdrawal) Act 2018. Upon the publication of this announcement via the Regulatory Information Service, this inside information is now considered to be in the public domain.

Contacts

For further information please visit https://phoenixcopperlimited.com   or contact:

Phoenix Copper Limited	Ryan McDermott Dennis Thomas Richard Wilkins	Tel: [phone]  Tel: [phone] Tel: [phone]
SP Angel Corporate Finance LLP (Nominated Adviser)	David Hignell / Caroline Rowe	Tel: [phone]
Tavira Securities Limited (Joint Broker)	Jonathan Evans / Oliver Stansfield	Tel: [phone]
WH Ireland (Joint Broker)	Harry Ansell / Adam Pollock / Katy Mitchell	Tel: [phone]
Panmure Gordon (UK) Limited (Joint Broker)	John Prior / Hugh Rich / Ailsa Macmaster	Tel: [phone]
EAS Advisors (US Corporate Adviser)	Matt Bonner / Rogier de la Rambelje	Tel: [phone]
Blytheweigh (Financial PR)	Tim Blythe / Megan Ray	Tel: [phone]

Notes

Phoenix Copper Limited is a USA focused, base and precious metals emerging producer and exploration company, initially targeting copper and zinc production from an open pit mine from late 2022.

Phoenix's primary operations are focused near Mackay, Idaho in the Alder Creek mining district, at the 80% owned Empire Mine property, which historically produced copper at grades of up to 8%, as well as gold, silver, zinc and tungsten, from an underground mine. 

Since 2017, Phoenix has carried out extensive drill programmes which resulted in the publication of a NI 43-101 PEA in October 2020 for an open pit heap leach solvent extraction and electrowinning ("SX-EW") mine, which was updated in October 2020. The contained metal in all NI 43-101 compliant categories of resources, measured, indicated, and inferred, stand at 129,641 tonnes of copper, 355,523 ounces of gold, 10,133,772 ounces of silver and 58,440 tonnes of zinc. Phoenix updated its economic model in February 2021 to include the processing of all contained metals through a two phased approach.

In addition to Empire, the district includes the historic Horseshoe, White Knob and Blue Bird Mines, past producers of copper, gold, silver, zinc, lead and tungsten from underground mines. A new discovery at Red Star, 330 metres northwest of the Empire Mine proposed open pit, has revealed high grade silver / lead sulphide ore and from three shallow exploration drill holes. A maiden resource of 103,000 tonnes containing 173.4 g/tonne silver, 0.85 g/tonne gold and 3.85% lead (1.6 million ounces silver equivalent) was reported in an NI 43-101 technical report published in May 2019. Additionally, the district includes the Navarre Creek Project, a volcanic hosted, precious metals target in a 14.48 sq km area. The Company's total land package at Empire comprises 8,034 acres (32.51 sq kms).

At Empire, it is estimated that less than 1% of the potential ore system has been explored to date and, accordingly, there is significant opportunity to increase the resource through phased exploration. The stated aim of the Company is to fund this phased exploration through free cashflow generated by its initial mine. A Plan of Operations in respect of the initial open pit mine was filed with the relevant regulatory authorities in June 2021.

Phoenix also has two wholly owned cobalt properties on the Idaho Cobalt Belt to the north of Empire. An Earn-In Agreement has been signed with Electra Battery Materials Corporation (formerly First Cobalt Corporation), Toronto, in respect of one of those properties.

Phoenix is listed on London's AIM (PXC), and trades on New York's OTCQX Market (PXCLF and PXCLY (ADRs)). More details on the Company, its assets and its objectives can be found on PXC's website at https://phoenixcopperlimited.com .

Glossary of Select Geological and Mining Terms

Breccia	Breccia is a term generally used for an enigmatic rock group that consists of a variety of individual mineral grains or broken fragments of rocks, often very angular and cemented together by a fine grain matrix, and sometimes glassy matrix which may or may not be similar to the composition of rock fragments.
Carlin-type	Carlin-type gold deposits are sediment-hosted disseminated gold deposits. These deposits are characterized by invisible (typically microscopic and/or dissolved) gold in arsenic rich pyrite and arsenopyrite. This dissolved kind of gold is called "Invisible Gold", as it can only be found through chemical analysis. The deposit is named after the Carlin mine, the first large deposit of this type discovered in the Carlin Trend, Nevada.
Copper Oxide & Copper Sulphide	The two main types of copper ore are copper oxide ores and copper sulphide ores. Both ore types can be economically mined, but they are processed in different ways. Copper sulphide ores are typically the most profitable copper ore type to mine because they have higher copper content and the copper in them can more easily be separated from unwanted minerals (the gange). Copper oxide ores have the advantage in that they are more abundant and tend to be nearer the surface.
Dickite	A mineral consisting of a basic silicate of aluminum found relatively well crystallized in clays.
Felsic volcanic tuff	Felsic volcanic rocks also include felsic tuff that was formed when tephra was consolidated. Tuff is composed of volcanic ash, glass shards and lithic fragments.
Gossan	An iron-containing secondary deposit, largely consisting of oxides and typically yellowish or reddish, occurring above a deposit of a metallic ore.
Glacial till	Till or glacial till is unsorted glacial sediment.
Hyperspectral imaging	Hyperspectral imaging, like other spectral imaging, collects and processes information from across the electromagnetic spectrum. The goal of hyperspectral imaging is to obtain the spectrum for each pixel in the image of a scene, with the purpose of finding objects, identifying materials, or detecting processes.
Jasperoids	A rare, peculiar type of metasomatic alteration that occurs in two main forms; sulfidic jasperoids and hematitic jasperoids.
Paragenetic	Paragenesis, the sequence in which the minerals are formed in an ore deposit. Variations in the pressure and temperature and in the chemical constituents of a hydrothermal solution will result in the precipitation of various minerals at different times within the same ore deposit.
Porphyry Ore	Porphyry ore deposits are the Earth's major resources of copper, molybdenum, and rhenium (Sillitoe, 2010) and also provide significant amounts of gold, silver, and other metals. Mineralization styles include stockwork veins, hydrothermal breccias, and wall-rock replacements.
Pyrophyllite	A soft usually white or greenish mineral that is a hydrous aluminum silicate, resembles talc, occurs in a foliated form or in compact masses, and is used especially in ceramic wares.
Skarn Deposits	Skarn is coarse-grained metamorphic rocks that forms by a metasomatism. Also called tactites. Skarn tend to be rich in calcium-magnesium-ironmanganese-aluminium silicate minerals that also referred to calc-silicate minerals. Skarn, in geology, metamorphic zone developed in the contact area around igneous rock intrusions when carbonate sedimentary rocks are invaded by large amounts of silicon, aluminium, iron, and magnesium. Many skarns also include ore minerals; several productive deposits of copper or other base metals have been found in and adjacent to skarns.

 

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