Further drill results from Fwiki and Muswema

RNS Number : 1265I

Arc Minerals Limited

09 December 2020

 

9 December 2020

Arc Minerals Ltd

('Arc' or the 'Company')

Further Exciting Drill Results from Fwiji and Muswema

Arc Minerals Ltd the Zambian focussed copper exploration and development company, is pleased to provide further exploration drill results from the Fwiji and Muswema Prospects.

Highlights:

· Further drill results from Fwiji with sulphide Copper intercepts

· Sulphide copper and cobalt mineralisation intersected at Muswema

· Muswema results support interpretation from geochemical characterisation and targeting

· Early drill results from Muswema indicate potential for larger system 

Nick von Schirnding, Executive Chairman of Arc stated:

"The exploration drilling programmes at Fwiji and early initial results from Muswema are another milestone in the company's drilling success.  Results from both drilling programmes indicate possible large-scale metal discoveries, with further follow up work that we are already progressing.  We are not satisfied with simply identifying further targets but are focusing razor-like on the next stage of developing the most prospective of our 14 targets. 

With most holes drilled showing copper intersections, we believe this provides further definitive evidence for our highly prospective license areas to host one or more large orebodies. With these additional results and continued interest by third parties we are extremely excited about the near term future."

Drilling Background

Following the Geochemical Characterisation and Targeting exercise completed on the 2,500 soil sample dataset selected by Anglo American as part of their due diligence under the exclusivity agreement, the company mobilised a drill rig to continue testing the re-ranked targets, starting off with the Muswema Prospect. 

At Muswema, holes drilled 400m apart have intersected sulphide copper and cobalt mineralisation confirming that the Muswema basin is mineralised, with the mineralisation related to the zones of potassic alteration within the host rock unit.

At Fwiji, further assay results from the holes drilled show further copper intercepts from the wide spaced drill program, providing support for a mineralised system in this part of the license area.

Drilling Results

The table below sets out the recent results of the holes for which assays have been received by Zamsort from SGS Inspection Service Ltd in Kalulushi, Zambia.

Table 1. Fwiji Prospect Drilling Intercepts

BHID	From	To	Length (m)	Cu (%)	State
FWDD001*	12.40	36.55	24.15	0.45	Oxide
	includes from 20.40m		7.00	0.72
	includes from 30.90m		3.50	0.73
FWDD002*	58.90	92.90	34.00	0.52	Oxide
	includes from 75.90m		3.75	1.61
	includes from 90.90m		2.00	0.91
	163.00	166.50	3.50	2.26	Sulphide
	includes from 165.50m		1.00	7.17
FWDD003	164	168	4.00	0.34	Mixed
FWDD004	No Mineralisation Intersected
FWDD005	42.40	46.90	4.50	0.45	Oxide
	81.40	82.40	1.00	0.66	Sulphide
	131.00	132.40	1.40	0.58	Sulphide
FWDD006	No Mineralisation Intersected
FWDD007	15.80	17.30	1.50	0.24	Oxide
FWDD008	15.50	18.50	3.00	0.23	Oxide
	130.00	132.00	2.00	0.23	Sulphide
FWDD009	93.00	94.50	1.50	0.24	Sulphide

* Results announced in October

Table 2. Muswema Prospect Drilling Intercepts

BHID	From	To	Length	TCu (%)	TCo (%)	Cu Eq. (%)	Oxidation State
MUSDD005	34.1	38.6	4.5	0.22	0.01	0.26	Oxide
	175	179	4	0.42	0.04	0.62	Sulphide
MUSDD006	215.5	220	4.5	0.39	0.03	0.54	Sulphide

Notes:  ​

1) Reported intervals are downhole widths.

2) Reported intervals are calculated for zones assaying > 0.2% Copper or 0.02% Cobalt and containing generally less than 3 metres of internal waste.

3) The Copper equivalent values are estimated using the approximate prevailing metal prices of $7,500/t copper and $32,000/t cobalt and are presented for ease of interval comparison only. Metallurgical factors are assumed to be 100% although the recovery factors and smelter returns may vary significantly.

4) The Copper equivalent values may differ slightly due to rounding.

Drilling Summary

At Fwiji, wide-spaced drilling consisting of ten diamond drill holes tested a surface area of more than 1km² confirming a plunging anticlinal feature that has now been shown to be mineralised.

At Muswema, MUSDD005 collared down dip of MUSDD004 intersected the down dip sulphide extensions to the oxide mineralisation intersected in MUSDD004. MUSDD006 collared 400m to the south of MUSDD005, confirmed the along strike extensions to the sulphide copper and cobalt mineralisation intersected in MUSDD005, demonstrating the continuity of the mineralisation between holes.

Many deposits in the Copperbelt are located in the vicinity of macrostructural features that would have ultimately had a bearing on deposit formation. At both Fwiji and Muswema, copper bearing fluids are proven to be have been present. Identifying and targeting of the potential structural traps will be the next steps to locating potential large-scale metal accumulations.

Fwiji Target Area

The Fwiji target area has been confirmed by both the soil sampling and airborne geophysical programmes and is situated on the northern limb of the Nyembwezu Syncline. The area is dominated by an open, south westerly plunging anticline, as defined by the Lower Roan quartzite ridge.

The pXRF analysis of the soil samples collected over the target area defined an arc-shaped low order copper ("Cu") anomaly (>100 ppm) extending for circa 4km, within which a core, high order Cu anomaly (>200 ppm) was traced for circa 2km.

Muswema Target Area

The Muswema Target Area ('MTA') was identified by both the soil sampling and airborne geophysical programmes. The MTA is situated on the northwest margin of the Kabompo Dome in an embayment produced by a series of northwest-southeast trending transfer faults. Four prospects have been defined over the MTA, namely Muswema, Muswema South, Chihidi and Kazozu.

Quality Assurance/Quality Control (QA/QC)

The core from the diamond drill was sampled at up to 1.5m intervals with the split core (PQ - ¼ core; HQ - ¼ core) bagged and sent to SGS Inspection Service Ltd in Kalulushi, Zambia, an ISO accredited laboratory for assaying.

The samples were sorted, dried, crushed and pulped before final chemical analysis using ICP-OES methods. Standards, blanks and duplicates were inserted regularly in the sample stream and checks were done for copper.

Qualified Persons

The exploration data contained in this disclosure has been read and approved by Mr Vassilios Carellas (BSc (Hons), MAusIMM) who is the Chief Operating Officer for Arc and has sufficient experience 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 under the JORC Code (2012). 

**ENDS**

Contacts

Arc Minerals Ltd Nick von Schirnding (Chairman)	[phone]
SP Angel (Nominated Adviser & Broker) Ewan Leggat / Adam Cowl	[phone]

Market Abuse Regulation (MAR) Disclosure

Certain information contained in this announcement would have been deemed inside information for the purposes of Article 7 of Regulation (EU) No 596/2014 until the release of this announcement.

Forward-looking Statements

This news release contains forward-looking statements that are based on the Company's current expectations and estimates. Forward-looking statements are frequently characterised by words such as "plan", "expect", "project", "intend", "believe", "anticipate", "estimate", "suggest", "indicate" and other similar words or statements that certain events or conditions "may" or "will" occur. Such forward-looking statements involve known and unknown risks, uncertainties and other factors that could cause actual events or results to differ materially from estimated or anticipated events or results implied or expressed in such forward-looking statements. Such factors include, among others: the actual results of current exploration activities; conclusions of economic evaluations; changes in project parameters as plans continue to be refined; possible variations in ore grade or recovery rates; accidents, labour disputes and other risks of the mining industry; delays in obtaining governmental approvals or financing; and fluctuations in metal prices. There may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. Any forward-looking statement speaks only as of the date on which it is made and, except as may be required by applicable securities laws, the Company disclaims any intent or obligation to update any forward-looking statement, whether as a result of new information, future events or results or otherwise. Forward-looking statements are not guarantees of future performance and accordingly undue reliance should not be put on such statements due to the inherent uncertainty therein.

Notes to the Editors

Arc Minerals is a dynamic AIM listed exploration and mine development company focused on the discovery and development of large-scale copper and copper cobalt deposits in the Western part of the Zambian Copperbelt.

Arc Minerals current holdings include:

● A 66% equity interest in Zamsort Limited ("Zamsort"), a private company focused on a prospective copper licence in the Zambia Copperbelt.

● A 72.5% equity interest in Zaco Investments Limited ("Zaco"), a private company focused on a prospective copper and cobalt licence adjacent to Zamsort.

For more information visit  www. arcminerals.com

  Glossary of Technical Terms

"anomaly or anomalous"	something in mineral exploration that geologists interpret as deviating from what is standard, normal, or expected.
"assay"	The laboratory test conducted to determine the proportion of a mineral within a rock or other material. For copper, usually reported as percentage which is equivalent to percentage of the mineral (i.e. copper) per tonne of rock.
"azimuth"	the "compass direction" refers to a geographic bearing or azimuth as measured by a magnetic compass, in true or magnetic north.
"bornite"	Bornite, also known as peacock ore, is a copper sulphide mineral with the formula Cu5FeS4.
"breccia"	Breccia is a rock classification, comprises millimetre to metre-scale rock fragments cemented together in a matrix, there are many sub-classifications of breccias.
"chalcocite"	Chalcocite is a copper sulphide mineral with the formula Cu2S and is an important copper ore mineral. It is opaque and dark-gray to black with a metallic luster.
"chalcopyrite"	Chalcopyrite is a copper sulphide mineral with formula CuFeS2. It has a brassy to golden yellow colour.
"chargeability"	Chargeability is a physical property related to conductivity. Chargeability is used to characterise the formation and strength of the induced polarisation within a rock, under the influence of an electric field, suggesting sulphide mineralisation at depth.
"covellite"	Covellite is a copper sulphide mineral with the formula CuS. This indigo blue mineral is ubiquitous in some copper ores.
"diamond drilling"	A drilling method in which penetration is achieved through abrasive cutting by rotation of a diamond encrusted drill bit. This drilling method enables collection of tubes of intact rock (core) and when successful gives the best possible quality samples for description, sampling and analysis of an ore body or mineralised structure.
"dip"	A line directed down the steepest axis of a planar structure including a planar ore body or zone of mineralisation. The dip has a measurable direction and inclination from horizontal.
"grab sample"	are samples of rock material collected from a small area, often just a few pieces or even a single piece of rock "grabbed" from a face, dump or outcrop or roughly 2-5kg. These are common types of rock samples collected when conducting mineral exploration. The sample usually consists of material that is taken to be representative of a specific type of rock or mineralisation.
"grade"	The proportion of a mineral within a rock or other material. For copper mineralisation this is usually reported as % of copper per tonne of rock.
"g/t"	grams per tonne; equivalent to parts per million ('ppm')
"hematite"	Hematite is the mineral form of iron(III) oxide (Fe2O3), one of several iron oxides.  Magnetite alteration is also typically associate with porphyry copper systems, at or close to the central core.
"Indicated Resource"	An "Indicated Mineral Resource" is that part of a Mineral Resource for which quantity, grade or quality, densities, shape and physical characteristics, can be estimated with a level of confidence sufficient to allow the appropriate application of technical and economic parameters, to support mine planning and evaluation of the economic viability of the deposit. The estimate is based on detailed and reliable exploration and testing information gathered through appropriate techniques from locations such as outcrops, trenches, pits, workings and drill holes that are spaced closely enough for geological and grade continuity to be reasonably assumed.
"Inferred Resource"	An "Inferred Mineral Resource" is that part of a Mineral Resource for which quantity and grade or quality can be estimated on the basis of geological evidence and limited sampling and reasonably assumed, but not verified, geological and grade continuity. The estimate is based on limited information and sampling gathered through appropriate techniques from locations such as outcrops, trenches, pits, workings and drill holes.
"Induced Polarisation Geophysics"	Induced polarisation (IP) is a geophysical survey used to identify the electrical chargeability of subsurface materials, such as sulphides. The survey involves an electric current that is transmitted into the subsurface through two electrodes, and voltage is monitored through two other electrodes.
"intercept"	Refers to a sample or sequence of samples taken across the entire width or an ore body or mineralised zone. The intercept is described by the entire thickness and the average grade of mineralisation.
"JORC Code"	The Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves ('the JORC Code') is a professional code of practice that sets minimum standards for Public Reporting of minerals Exploration Results, Mineral Resources and Ore Reserves.
"K"	The element potassium, abundance on surface can be inferred from radiometric surveys
"Magnetics"	Rocks are made up of different minerals and the magnetic properties of a rock depends on the amount and type of iron rich minerals it contains. Earth's magnetic field interacts with these iron rich minerals to generate variations in the magnetic field.  Measuring and mapping these variations allows remotely mapping of the distribution and patterns of magnetic rocks and, as a result, map the subsurface geology
"magnetite"	Magnetite is main iron ore mineral, with chemical formula Fe3O4. Magnetite is ferromagnetic, and it is attracted to a magnet and can be magnetized to become a permanent magnet itself.
"massive"	In a geological sense, refers to a zone of mineralisation that is dominated by sulphide minerals.  The sulphide-mineral-rich material can occur in centimetre-scale, metre-scale or in tens of metres wide veins, lenses or sheet-like bodies containing sphalerite, galena, and / or chalcopyrite etc.
"Measured Resource"	A "Measured Mineral Resource" is that part of a Mineral Resource for which quantity, grade or quality, densities, shape, and physical characteristics are so well established that they can be estimated with confidence sufficient to allow the appropriate application of technical and economic parameters, to support production planning and evaluation of the economic viability of the deposit. The estimate is based on detailed and reliable exploration, sampling and testing information gathered through appropriate techniques from locations such as outcrops, trenches, pits, workings and drill holes that are spaced closely enough to confirm both geological and grade continuity.
"Mineral Resource"	A "Mineral Resource" is a concentration or occurrence of diamonds, natural solid inorganic material, or natural solid fossilised organic material including base and precious metals, coal, and industrial minerals in or on the Earth's crust in such form and quantity and of such a grade or quality that it has reasonable prospects for economic extraction. The location, quantity, grade, geological characteristics and continuity of a Mineral Resource are known, estimated or interpreted from specific geological evidence and knowledge.
"mineralisation"	In geology, mineralisation is the deposition of economically important metals (copper, gold, lead, zin etc) that in some cases can be in sufficient quantity to form mineral ore bodies.
"open pit mining"	A method of extracting minerals from the earth by excavating downwards from the surface such that the ore is extracted in the open air (as opposed to underground mining).
"outcrop"	A section of a rock formation or mineral vein that appears at the surface of the earth.  Geologists take direct observations and samples from outcrops, used in geologic analysis and creating geologic maps. In situ (in place) measurements are critical for proper analysis of the geology and mineralisation of the area under investigation.
"polymict"	A geology term, often applied to breccias or conglomerates, which identifies the composition as consisting of fragments of several different rock types.
"Preliminary Economic Assessment"	NI 43-101 defines a PEA as "a study, other than a pre-feasibility study or feasibility study, which includes an economic analysis of the potential viability of mineral resources".
"Pyrrhotite"	Pyrrhotite is an  iron sulfide   mineral  with the formula Fe(1-x)S (x = 0 to 0.2). It is a  nonstoichiometric  variant of FeS, the mineral known as  troilite . Pyrrhotite is also called magnetic  pyrite
"Radiometrics"	The radiometric, or gamma-ray spectrometric method is a geophysical process used to estimate concentrations of the radioelements potassium, uranium and thorium by measuring the gamma-rays which the radioactive isotopes of these elements emit during radioactive decay
"sediments"	Sedimentary rocks formed by the accumulation of sediments. There are three types, Clastic, Chemical and Organic sedimentary rocks.
"sphalerite"	Sphalerite is a zinc sulphide in crystalline form but almost always contains variable iron, with formula (Zn,Fe)S. It can have a yellowish to honey brown or black colour.
"supergene"	Supergene ore processes occur near surface, and form deposits of secondary minerals, such as malachite, azurite, chalcocite, covellite, digenite, etc.
"surface rock chip samples"	Rock chip samples approximately 2kg in size that are typically collected from surface outcrops exposed along rivers and mountain ridgelines.
"Th"	The element thorium, abundance on surface can be inferred from radiometric surveys
"U"	The element uranium, abundance on surface can be inferred from radiometric surveys
"veins"	A vein is a sheet-like or anastomosing fracture that has been infilled with mineral ore (chalcopyrite, covellite etc) or mineral gangue (quartz, calcite etc) material, within a rock. Veins form when minerals carried by an aqueous solution within the rock mass are deposited through precipitation and infill or coat the fracture faces.
"volcanics"	Volcanic rock such as andesite or basalt that is formed from magma erupted from a volcano, or hot clastic material that erupts from a volcano and is deposited as volcaniclastic or pyroclastics.

 

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