For immediate release
22
June 2022
Serabi Gold
plc(“Serabi” or
the “Company”)
Coringa Development Update
Serabi Gold plc (AIM:SRB, TSX:SBI), the Brazilian-focused gold
mining and development company, is pleased to report further
positive results from its Coringa development project in the
Tapajos region of Para State, Northern Brazil.
A PDF version of this announcement,
including all images, can be accessed using the following
link - https://bit.ly/3xGWpwB
Highlights
- Initial ore sorting test work confirms amenability to ore
sorting of Coringa ore with a greater than three times improvement
in grade
- Metallurgical recovery of 96.0% achieved from processing
Coringa bulk sample through the Palito processing plant
- Underground development continues to generate high grade ore at
Coringa with over 200 metres of on-lode development completed.
Selected channel sample results include:
- 0.65 metres @ 99.26g/t Au (SRR-320-042 - development
320_V3S)
- 0.42 metres @ 116.18g/t Au (SRR-320-044 - development
320_V3S)
- 0.17 metres @ 302.36g/t Au (SRR-340-031 - development
340_V3N)
- 0.55 metres @ 46.53g/t Au (SRR-320-050 - development
320_V3S)
- 0.52 metres @ 55.57g/t Au (SRR-340-039 - development
340_V3S)
- 0.22 metres @ 123.62g/t Au (SRR-320-052 - development
320_V3S)
- 0.32 metres @ 133.92g/t Au (SRR-340-042 - development
340_V3S)
- 0.50 metres @ 68.59g/t Au (SRR-320-056 – development
320_V3S)
Mike Hodgson CEO said
“The results from Coringa continue to be
excellent and it is particularly pleasing to demonstrate that ore
sorting works so well and in addition to achieve an impressive
metallurgical recovery of 96%. While these processing results are
in line with our expectations based on the significant
metallurgical test work that has been completed, achieving gold
recovery of 96% on a bulk sample through our full-scale processing
facility is a major step in further de-risking Coringa. The ability
to sort the Coringa ore also brings significant economic benefits,
reducing the waste material passing through the plant and therefore
processing cost and the volume of tailings generated.
“Underground mine development is continuing,
with over 200 metres of on-lode development now completed. This is
enhancing our understanding of the ore-body and also providing a
stockpile of high-grade ore that in the near term we will truck to
Palito to generate additional gold production and revenue. I look
forward to providing further updates in the coming weeks.”
RESULTS
Ore sorting resultsCrushed and
screened Coringa ore with a size fraction of between 15mm and 38mm
was passed through the ore sorter and scanned using the photometric
colour scanner. This initial test work applied a range of scanning
parameters to assess the optimal configuration for sorting Coringa
ore based on colour. The grade of the sample sent to the ore sorter
was 6.24g/t Au and the average grade of the sorted product was
19.61g/t Au within approximately 30% of the mass with the balance
reporting as waste with a grade of 0.51 g/t Au.
To access 4 images illustrating the colour
contrast, please use the following links
Image 1 – https://bit.ly/3n70wgA
Image 2 – https://bit.ly/3OsnSJl
Image 3 – https://bit.ly/3NeoaCq
Image 4 – https://bit.ly/3OthykL
Figure 1: Photos illustrating the
contrasting colour of the white and grey mineralisation and the
pink granite waste rock.
Process plant recovery
In the period to 19th June 2022, a total of 566
tonnes of Coringa ore was treated through the Palito processing
plant with an average feed grade of 6.34 g/t Au. From this a total
of 110.6 ounces was produced with a recovery rate of 96.0%.
Coringa Mine Development
Total on-lode development extended to over 200
metres on V1, V2 and V3 veins of the Serra orebody as illustrated
in Figures 2, 3 and 4. Geological mapping and channel sampling is
undertaken along this development with channel sample results from
the V1, V2 and V3 veins, assayed at Serabi’s in-house laboratory,
set out in the table below.
Sample I.D. |
Interval and grade |
Level, vein and heading |
SRR-320-041 |
0.31 metres @ 11.56g/t Au |
320_V3N |
SRR-320-042 |
0.65 metres @ 99.26g/t
Au |
320_V3S |
SRR-340-028 |
0.09 metres @ 1.65g/t Au |
340_V1S |
SRR-320-043 |
0.73 metres @ 3.53g/t Au |
320_V1N |
SRR-320-044 |
0.43 metres @ 6.94g/t Au |
320_V3S |
SRR-320-044 |
0.42 metres @ 116.18g/t
Au |
320_V3S |
SRR-320-045 |
0.17 metres @ 41.75g/t Au |
320_V3N |
SRR-340-029 |
0.17 metres @ 21.06g/t Au |
340_V3S |
SRR-340-030 |
0.16 metres @ 31.58g/t Au |
340_V2S |
SRR-320-046 |
0.24 metres @ 1.56g/t Au |
320_V1N |
SRR-320-046 |
0.59 metres @ 2.38g/t Au |
320_V1N |
SRR-320-047 |
0.28 metres @ 0.33g/t Au |
320_V1S |
SRR-320-048 |
0.28 metres @ 1.69g/t Au |
320_V1S |
SRR-320-048 |
0.60 metres @ 0.38g/t Au |
320_V1S |
SRR-340-031 |
0.17 metres @ 302.36g/t
Au |
340_V3N |
SRR-320-049 |
0.15 metres @ 45.13g/t Au |
320_V3N |
SRR-340-032 |
0.44 metres @ 48.07g/t
Au |
340_V3S |
SRR-340-033 |
0.10 metres @ 67.23g/t Au |
340_V2S |
SRR-340-034 |
0.54 metres @ 0.83g/t Au |
340_V1N |
SRR-340-034 |
0.37 metres @ 0.6g/t Au |
340_V1N |
SRR-340-035 |
0.24 metres @ 0.8g/t Au |
340_V1S |
SRR-340-035 |
0.38 metres @ 0.11g/t Au |
340_V1S |
SRR-340-036 |
0.37 metres @ 0.48g/t Au |
340_V1S |
SRR-320-050 |
0.55 metres @ 46.53g/t
Au |
320_V3S |
SRR-320-051 |
0.38 metres @ 22.29g/t Au |
320_V3N |
SRR-340-037 |
0.11 metres @ 23.83g/t Au |
340_V3N |
SRR-340-038 |
0.21 metres @ 36.29g/t Au |
340_V3N |
SRR-340-039 |
0.52 metres @ 55.57g/t
Au |
340_V3S |
SRR-320-052 |
0.22 metres @ 123.62g/t
Au |
320_V3S |
SRR-320-052 |
0.70 metres @ 0.35g/t Au |
320_V3S |
SRR-320-052 |
0.25 metres @ 1.72g/t Au |
320_V3S |
SRR-320-053 |
0.26 metres @ 10.99g/t Au |
320_V3N |
SRR-320-053 |
0.22 metres @ 3.65g/t Au |
320_V3N |
SRR-340-040 |
0.28 metres @ 25.14g/t Au |
340_V1S |
SRR-320-054 |
0.48 metres @ 1.49g/t Au |
320_V1N |
SRR-320-054 |
0.25 metres @ 10g/t Au |
320_V1N |
SRR-340-041 |
0.13 metres @ 22.59g/t Au |
340_V3N |
SRR-340-042 |
0.32 metres @ 133.92g/t
Au |
340_V3S |
SRR-340-043 |
0.19 metres @ 51.87g/t
Au |
340_V2S |
SRR-320-055 |
0.32 metres @ 31.14g/t
Au |
320_V3N |
SRR-320-056 |
0.50 metres @ 68.59g/t
Au |
320_V3S |
SRR-320-056 |
0.28 metres @ 0.1g/t Au |
320_V3S |
SRR-320-056 |
0.13 metres @ 1.42g/t Au |
320_V3S |
SRR-320-057 |
0.23 metres @ 3.23g/t Au |
320_V1S |
SRR-320-057 |
0.27 metres @ 0.08g/t Au |
320_V1S |
SRR-320-057 |
0.24 metres @ 2.45g/t Au |
320_V1S |
SRR-320-057 |
0.67 metres @ 0.06g/t Au |
320_V1S |
SRR-320-057 |
0.42 metres @ 0.83g/t Au |
320_V1S |
SRR-320-057 |
0.37 metres @ 2.33g/t Au |
320_V1S |
SRR-320-058 |
0.33 metres @ 1.69g/t Au |
320_V1S |
SRR-320-058 |
0.18 metres @ 28.42g/t Au |
320_V1S |
SRR-340-044 |
0.17 metres @ 55.73g/t Au |
340_V3N |
SRR-340-045 |
0.17 metres @ 32.51g/t Au |
340_V3S |
SRR-340-046 |
0.13 metres @ 10.9g/t Au |
340_V2S |
SRR-320-059 |
0.46 metres @ 37.29g/t
Au |
320_V3S |
SRR-340-047 |
0.14 metres @ 1.46g/t Au |
340_V3S |
SRR-340-048 |
0.16 metres @ 12.61g/t Au |
340_V2S |
SRR-320-060 |
0.46 metres @ 17.7g/t Au |
320_V1N |
SRR-320-061 |
0.25 metres @ 1.11g/t Au |
320_V1N |
SRR-320-062 |
0.56 metres @ 1.84g/t Au |
320_V1S |
SRR-320-062 |
0.31 metres @ 0.09g/t Au |
320_V1S |
SRR-320-062 |
0.37 metres @ 0.03g/t Au |
320_V1S |
SRR-320-063 |
0.51 metres @ 4.49g/t Au |
320_V3N |
SRR-340-049 |
0.17 metres @ 3.77g/t Au |
340_V3N |
SRR-320-064 |
0.32 metres @ 26.83g/t Au |
320_V3S |
SRR-320-065 |
0.39 metres @ 21.53g/t Au |
320_V3N |
SRR-340-050 |
0.15 metres @ 4.08g/t Au |
340_V3N |
SRR-340-051 |
0.14 metres @ 6.22g/t Au |
340_V3S |
SRR-340-052 |
0.17 metres @ 61.53g/t
Au |
340_V2S |
SRR-320-066 |
0.49 metres @ 35.1g/t
Au |
320_V1N |
SRR-320-066 |
0.46 metres @ 13.49g/t Au |
320_V1N |
SRR-320-066 |
0.48 metres @ 1.41g/t Au |
320_V1N |
SRR-320-066 |
0.39 metres @ 8.8g/t Au |
320_V1N |
SRR-320-066 |
0.53 metres @ 35.18g/t
Au |
320_V1N |
SRR-320-067 |
0.27 metres @ 2.22g/t Au |
320_V3S |
SRR-320-067 |
0.25 metres @ 21.4g/t Au |
320_V3S |
SRR-340-053 |
0.16 metres @ 12.45g/t Au |
340_V3N |
The assay results reported above are those provided by the
Company's own on-site laboratory facilities at Palito and have not
been independently verified. Serabi closely monitors the
performance of its own facility against results from independent
laboratory analysis for quality control purpose. As a matter of
normal practice, the Company sends duplicate samples derived from a
variety of the Company's activities to accredited laboratory
facilities for independent verification. Since mid-2019, over
10,000 exploration drill core samples have been assayed at both the
Palito laboratory and certified external laboratory, in most cases
the ALS laboratory in Belo Horizonte, Brazil. When comparing
significant assays with grades exceeding 1 g/t gold, comparison
between Palito versus external results record an average
over-estimation by the Palito laboratory of 6.7% over this period.
Based on the results of this work, the Company's management are
satisfied that the Company's own facility shows sufficiently good
correlation with independent laboratory facilities for exploration
drill samples. The Company would expect that in the preparation of
any future independent Reserve/Resource statement undertaken in
compliance with a recognised standard, the independent authors of
such a statement would not use Palito assay results without
sufficient duplicates from an appropriately certificated
laboratory. |
Table 1: Channel sample results from V3
vien of Serra orebody from 340m and 320m level on-lode
development.
To access an image of the Geological Map of the
Main Ramp of 320, please use the following link -
https://bit.ly/3n8V3pM
Figure 2: Geological Map
of the Main Ramp of 320 showing the position of V3
and V1 in relation to the opening of the sill drives and the
geological model.
To access an image of the Geological Map of the
Inner Ramp of 340, please use the following link -
https://bit.ly/3y5WMSW
Figure 3: Geological Map of the Inner
Ramp of 340 showing the position of V3 and V1 in relation to the
opening of the sill drives and the geological model.
To access an image of the intersection of V3 and
V2 please use the following link - https://bit.ly/3zQke85
Figure 4: Intersection of V3 (right) and
V2 (left) in the 340_V3S showing strong contrast between the
mineralized quartz sulphide vein and the pink granite country rock
suggesting the deposit should be amenable to ore
sorting.
The information contained within this
announcement is deemed by the Company to constitute inside
information as stipulated under the Market Abuse Regulations (EU)
No. 596/2014 as it forms part of UK Domestic Law by virtue of the
European Union (Withdrawal) Act 2018.
The person who arranged for the release of this
announcement on behalf of the Company was Clive Line, Director.
Enquiries:
Serabi Gold plc |
|
Michael Hodgson |
Tel: +44 (0)20 7246 6830 |
Chief Executive |
Mobile: +44 (0)7799 473621 |
|
|
Clive Line |
Tel: +44 (0)20 7246 6830 |
Finance Director |
Mobile: +44 (0)7710 151692 |
|
|
Email: contact@serabigold.com |
|
Website: www.serabigold.com |
|
|
|
Beaumont Cornish LimitedNominated Adviser and Financial
Adviser |
|
Roland Cornish / Michael Cornish |
Tel: +44 (0)20 7628 3396 |
|
|
Peel Hunt LLPJoint UK Broker |
|
Ross Allister / Alexander Allen |
Tel: +44 (0)20 7418 9000 |
|
|
Tamesis Partners LLPJoint UK Broker |
|
Charlie Bendon / Richard Greenfield |
Tel: +44 (0)20 3882 2868 |
|
|
Camarco Financial
PR |
|
Gordon Poole / Emily Hall |
Tel: +44(0) 20 3757 4980 |
Copies of this announcement are available from
the Company's website at www.serabigold.com.
Neither the Toronto Stock Exchange, nor any
other securities regulatory authority, has approved or disapproved
of the contents of this announcement.
See
www.serabigold.com for more information
and follow us on twitter @Serabi_Gold
GLOSSARY OF TERMS
“Ag” |
means silver. |
“Au” |
means gold. |
“assay” |
in economic geology, means to analyse the proportions of metal in a
rock or overburden sample; to test an ore or mineral for
composition, purity, weight or other properties of commercial
interest. |
“CIM” |
means the Canadian Institute of Mining, Metallurgy and
Petroleum. |
“chalcopyrite” |
is a sulphide of copper and iron. |
“Cu” |
means copper. |
“cut-off grade” |
the lowest grade of mineralised material that qualifies as ore in a
given deposit; rock of the lowest assay included in an ore
estimate. |
“dacite porphyry intrusive” |
a silica-rich igneous rock with larger phenocrysts (crystals)
within a fine-grained matrix |
“deposit” |
is a mineralised body which has been physically delineated by
sufficient drilling, trenching, and/or underground work, and found
to contain a sufficient average grade of metal or metals to warrant
further exploration and/or development expenditures; such a deposit
does not qualify as a commercially mineable ore body or as
containing ore reserves, until final legal, technical, and economic
factors have been resolved. |
“electromagnetics” |
is a geophysical technique tool measuring the magnetic field
generated by subjecting the sub-surface to electrical
currents. |
“garimpo” |
is a local artisanal mining operation |
“garimpeiro” |
is a local artisanal miner. |
“geochemical” |
refers to geological information using measurements derived from
chemical analysis. |
“geophysical” |
refers to geological information using measurements derived from
the use of magnetic and electrical readings. |
“geophysical techniques” |
include the exploration of an area by exploiting differences in
physical properties of different rock types. Geophysical methods
include seismic, magnetic, gravity, induced polarisation and other
techniques; geophysical surveys can be undertaken from the ground
or from the air. |
“gossan” |
is an iron-bearing weathered product that overlies a sulphide
deposit. |
“grade” |
is the concentration of mineral within the host rock typically
quoted as grams per tonne (g/t), parts per million (ppm) or parts
per billion (ppb). |
“g/t” |
means grams per tonne. |
“granodiorite” |
is an igneous intrusive rock similar to granite. |
“hectare” or a “ha” |
is a unit of measurement equal to 10,000 square metres. |
“igneous” |
is a rock that has solidified from molten material or magma. |
“IP” |
refers to induced polarisation, a geophysical technique whereby an
electric current is induced into the sub-surface and the
conductivity of the sub-surface is recorded. |
“intrusive” |
is a body of rock that invades older rocks. |
"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 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. |
“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. |
“mineralisation” |
the concentration of metals and their chemical compounds within a
body of rock. |
“mineralised” |
refers to rock which contains minerals e.g. iron, copper,
gold. |
"Mineral
Resource” |
is a concentration or occurrence of diamonds, natural solid
inorganic material, or natural solid fossilized 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. |
“Mineral Reserve” |
is the economically mineable part of a Measured or Indicated
Mineral Resource demonstrated by at least a Preliminary Feasibility
Study. This Study must include adequate information on mining,
processing, metallurgical, economic and other relevant factors that
demonstrate, at the time of reporting, that economic extraction can
be justified. A Mineral Reserve includes diluting materials and
allowances for losses that may occur when the material is mine |
“Mo-Bi-As-Te-W-Sn” |
Molybdenum-Bismuth-Arsenic-Tellurium-Tungsten-Tin |
“monzogranite” |
a biotite rich granite, often part of the later-stage emplacement
of a larger granite body. |
“mt” |
means million tonnes. |
“ore” |
means a metal or mineral or a combination of these of sufficient
value as to quality and quantity to enable it to be mined at a
profit. |
“oxides” |
are near surface bed-rock which has been weathered and oxidised by
long term exposure to the effects of water and air. |
“ppm” |
means parts per million. |
“Probable Mineral Reserve” |
is the economically mineable part of an Indicated and, in some
circumstances, a Measured Mineral Resource demonstrated by at least
a Preliminary Feasibility Study. This Study must include adequate
information on mining, processing, metallurgical, economic, and
other relevant factors that demonstrate, at the time of reporting,
that economic extraction can be justified. |
“Proven Mineral Reserve” |
is the economically mineable part of a Measured Mineral Resource. A
Proven Mineral Reserve implies a high degree of confidence in the
Modifying Factors |
“saprolite” |
is a weathered or decomposed clay-rich rock. |
“sulphide” |
refers to minerals consisting of a chemical combination of sulphur
with a metal. |
“vein” |
is a generic term to describe an occurrence of mineralised rock
within an area of non-mineralised rock. |
“VTEM” |
refers to versa time domain electromagnetic, a particular variant
of time-domain electromagnetic geophysical survey to prospect for
conductive bodies below surface. |
Assay ResultsAssay results
reported within this release include those provided by the
Company's own on-site laboratory facilities at Palito and these
will not have been independently verified. Serabi closely monitors
the performance of its own facility against results from
independent laboratory analysis for quality control purpose. As a
matter of normal practice, the Company sends duplicate samples
derived from a variety of the Company's activities to accredited
laboratory facilities for independent verification. Since mid-2019,
over 10,000 exploration drill core samples have been assayed at
both the Palito laboratory and certified external laboratory, in
most cases the ALS laboratory in Belo Horizonte, Brazil. When
comparing significant assays with grades exceeding 1 g/t gold,
comparison between Palito versus external results record an average
over-estimation by the Palito laboratory of 6.7% over this period.
Based on the results of this work, the Company's management are
satisfied that the Company's own facility shows sufficiently good
correlation with independent laboratory facilities for exploration
drill samples. The Company would expect that in the preparation of
any future independent Reserve/Resource statement undertaken in
compliance with a recognised standard, the independent authors of
such a statement would not use Palito assay
Qualified Persons StatementThe
scientific and technical information contained within this
announcement has been reviewed and approved by Michael Hodgson, a
Director of the Company. Mr Hodgson is an Economic Geologist by
training with over 26 years' experience in the mining industry. He
holds a BSc (Hons) Geology, University of London, a MSc Mining
Geology, University of Leicester and is a Fellow of the Institute
of Materials, Minerals and Mining and a Chartered Engineer of the
Engineering Council of UK, recognising him as both a Qualified
Person for the purposes of Canadian National Instrument 43-101 and
by the AIM Guidance Note on Mining and Oil & Gas Companies
dated June 2009.
Forward Looking
StatementsCertain statements in this announcement are, or
may be deemed to be, forward looking statements. Forward looking
statements are identified by their use of terms and phrases such as
‘‘believe’’, ‘‘could’’, “should” ‘‘envisage’’, ‘‘estimate’’,
‘‘intend’’, ‘‘may’’, ‘‘plan’’, ‘‘will’’ or the negative of those,
variations, or comparable expressions, including references to
assumptions. These forward-looking statements are not based on
historical facts but rather on the Directors’ current expectations
and assumptions regarding the Company’s future growth, results of
operations, performance, future capital and other expenditures
(including the amount, nature and sources of funding thereof),
competitive advantages, business prospects and opportunities. Such
forward looking statements reflect the Directors’ current beliefs
and assumptions and are based on information currently available to
the Directors. A number of factors could cause actual results to
differ materially from the results discussed in the forward-looking
statements including risks associated with vulnerability to general
economic and business conditions, competition, environmental and
other regulatory changes, actions by governmental authorities, the
availability of capital markets, reliance on key personnel,
uninsured and underinsured losses and other factors, many of which
are beyond the control of the Company. Although any forward-looking
statements contained in this announcement are based upon what the
Directors believe to be reasonable assumptions, the Company cannot
assure investors that actual results will be consistent with such
forward looking statements.
ENDS
- Coringa update - June 2022
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