TIDMALBA
RNS Number : 3937A
Alba Mineral Resources PLC
28 December 2017
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Alba Mineral Resources plc
("Alba" or the "Company")
Summary of Geochemical Sampling at Amitsoq
Alba Mineral Resources plc (AIM: ALBA) is pleased to report the
geochemical assays from the Amitsoq project (the "Project") in
southern Greenland. The samples consist of stream sediment and grab
samples as part of a gold exploration programme, grab samples to
test the presence of platinum group metals (PGMs) in an ultramafic
dyke, and grab samples of graphite occurrences throughout the
licence area.
Highlights
-- Thirty-three graphite samples were analysed from ten (10)
areas and contained an average graphitic carbon content of 20.88%
carbon.
-- Graphitic carbon content at the new Kalaaq graphite showing
averaged 25.62% carbon, with a maximum content of 29.0% carbon.
-- Trace element geochemistry of graphite samples showed that
they were low in potentially deleterious elements (As, Cd, Hg)
-- Grab samples collected from a sulphide-rich area of the
Amitsoq hornblende peridodite dyke contained 0.3 g/t platinum, 0.3
g/t palladium, and 0.3 g/t gold.
-- Stream sediment and grab samples collected over the licence
area indicate that only the Søndre Sermilik target contains
elevated gold (up to 0.4 g/t) and copper (up to 0.77%)
concentrations in previously untested structures.
Graphite Sampling
As reported on 18 July 2017 and 26 September 2017, the first
phase of 2017 fieldwork on the Project in southern Greenland
produced the following results:
-- Identification of several graphite horizons along strike and
proximal to the Amitsoq graphite mine coincident with airborne EM
anomalies.
-- Two new areas of thick (greater than 1 m) graphite beds were identified:
o The first area is located 8.75 km to the north-east of the
former Amitsoq mine, and corresponds to a strong EM anomaly, with a
true thickness of at least 4.85 m. This area was named Target 42,
based on the EM anomaly number.
o The second area is located on the mainland portion of Alba's
licence, 11.5 km north-northeast from Nanortalik, and is known as
the "Kalaaq" discovery zone. The zone consists of at least three
beds of apparently purer graphite than within the Amitsoq mine
area, with true thicknesses of up to 7 m, and where they have been
folded the beds are postulated to attain thickness up to 15 m. The
beds are mapped over a distance of at least 460 m.
Fieldwork conducted during the summer 2017 field programme
included the collecting of grab and channel samples for all
graphite units encountered which had a thickness greater than 0.5
m.
A total of 33 graphite samples collected during the summer 2017
fieldwork programme have now been analysed by OMAC Laboratories (a
subsidiary of ALS Limited), Loughrea, Ireland. The analysis is
presented in Table 1 below.
Table 1: Graphite analyses
Graphitic +/- As Cd Hg No.
Carbon STD (ppm) (ppm) (ppm) of
(%) samples
----------------- ---------- ----- ------- ------- ------- ---------
Sønder
Sermilik 17.25 - 0.11 0.11 0.01 1
----------------- ---------- ----- ------- ------- ------- ---------
Target
42 11.98 8.08 5.01 0.5 0.02 8
----------------- ---------- ----- ------- ------- ------- ---------
Valley 25.5 2.82 10.6 0.03 0.02 3
----------------- ---------- ----- ------- ------- ------- ---------
Portussoq 18.45 1.27 5.65 0.49 0.02 2
----------------- ---------- ----- ------- ------- ------- ---------
North Anchorage 2.75 - 1.4 1.35 0.01 1
----------------- ---------- ----- ------- ------- ------- ---------
Target
4 26.3 - 2.1 0.03 0.02 1
----------------- ---------- ----- ------- ------- ------- ---------
Amitsoq
Mine 23.91 3.79 0.66 5.86 0.02 4
----------------- ---------- ----- ------- ------- ------- ---------
Kalaaq 25.62 2.22 4.75 2.72 0.01 13
----------------- ---------- ----- ------- ------- ------- ---------
The Kalaaq discovery zone contains the thickest graphite
accumulations (with the exception of the lower bed at the Amitsoq
mine) and the highest average graphitic carbon (GC) grade of
25.62%, with one sample from a 3m wide bed containing 29.00% GC.
The average graphitic carbon grade at Kalaaq obtained from grab
samples is almost identical to the channel samples collected from
the lower 16.5 m thick bed at the former Amitsoq mine, where the
average grade was 25.6% GC (Alba RNS, 12/04/2017).
The Valley graphite showing comprised of three samples present
on the north side of a large valley that bisects the middle of
Amitsoq Island. Three grab samples from this bed that attain true
thicknesses up to 5 m averaged 25.50% GC, and warrant follow-up
based on the carbon content.
The richest graphite-bearing grab sample collected during the
field work was from Target 42, and contained 30.90% GC. However,
the average graphitic carbon content from this 100 m long and up to
16 m wide outcropping zone was 11.98% (with a standard deviation of
8.08% GC).
Potentially deleterious elements such as arsenic (As), cadmium
(Cd), and mercury (Hg) were also analysed (Table 1), but the
concentrations recorded were very low and considered background for
sedimentary rocks.
Platinum Group Metal (PGM) Sampling
Six grab samples were also collected during the summer 2017
fieldwork from a 50 m wide hornblende amphibolite dyke that cuts
the granitic gneiss comprising the northern part of Amitsoq Island.
Two of the samples were collected from the west side of the island,
and four samples were collected from the east side. None of the
western samples were considered anomalous with respect to platinum,
palladium, gold, or associated base metals (copper, nickel, or
cobalt). However, one sulphide-rich sample collected from the east
contact zone of the dyke contained 0.33 g/t Pt, 0.38 g/t Pd, 0.13
g/t Au, 0.46% Ni, 0.21% Cu, and 602 ppm Co. The three other samples
collected from the eastern side of the dyke contained 0.04 g/t Pt,
0.05 g/t Pd, and 0.01 g/t Au. The elevated PGM concentrations in
the sulphide-rich sample suggest that the mineralizing system is
PGM-bearing, and additional work along the dyke margins should be
performed.
Sampling by Platinova in 1988 indicated that PGM grades were
higher in the eastern side of the dyke compared to the western
side. From 16 samples collected, the average metal concentrations
were 0.082 g/t Pt, 0.080 g/t Pd and 0.023 g/t Au.
Stream Sediment Sampling and lithogeochemical prospecting for
gold and base metals
A total of 70 samples were collected and submitted for
geochemical assaying, with an appropriate number of standards and
blanks, to OMAC Laboratories Limited, Ireland, and analysed for
gold and 51 other elements. The primary purpose of the sampling
program was to determine if gold was present on the Amitsoq
licence, since it is adjacent to the licence containing the Nalunaq
gold mine, and it has similar rocks and structural features.
Thirty-eight (38) of the samples were coarse stream sediment
samples, 11 scree samples collect from the upper reaches of scree
cones (and used as a proxy for stream sediment samples), 7 float
samples, and 14 grab samples collected from outcrops. A summary of
the results is tabulated in Table 2.
Table 2 shows that no appreciable concentrations of gold were
recorded within the stream sediment samples. The highest
concentration was present on the north in the southern part of
Amitsoq (22 ppb Au) and the second highest sample (containing 17
ppb Au) was located in the southern part of the licence. The
highest gold concentration record from a scree sample was 10 ppb,
near the centre of Amitsoq.
Table 2: Lithogeochemical samples analysed for gold (Au)
Type No. Average Sample > Max Au concentration
of samples Au Limit of (ppb)
(ppb) detection
(1 ppb)
--------------------- ------------ -------- ----------- ---------------------
Stream
Sediment 30 4.55 20 22
--------------------- ------------ -------- ----------- ---------------------
Scree 11 6.5 4 10
--------------------- ------------ -------- ----------- ---------------------
Grab (outcrop) 14 59.8 10 404
--------------------- ------------ -------- ----------- ---------------------
Float (transported) 7 4.0 3 5
--------------------- ------------ -------- ----------- ---------------------
Only 7 float samples were collected and analysed during the
fieldwork, and two of the samples sulphide-rich samples from the
Søndre Sermilik area contained the highest gold concentrations of 5
ppb. Additionally, both of these samples contain anomalous levels
of zinc (1550 and 789 ppm) and silver (1.21 and 1.34 ppm).
With the exception of one grab sample on Amitsoq, all of the
samples containing more than the limit of detection of gold were
from the Søndre Sermilik area of the licence. The samples were
collected from a gossanous zone associate with mafic sill that had
intruded between a lower biotite gneiss unit and an overlying
quartzite unit over a distance of 700 m, and a small granite
intrusion cut by a late southwest-trending fault. The fault cutting
the intrusion contained malachite stained quartz that assayed 404
ppb Au (0.404 g/t Au), 4.82 ppm Ag, and 0.77% Cu, and a second
sample 50 m away that contained 98 ppb Au, 5.09 ppm Ag, and 0.67%
Cu. The third highest gold concentration from the area was within
the gossan zone (61 ppb).
The presence of gold mineralization was previously noted in the
Sønder Sermilik area by Atlas Precious Metals in 1993, but the vast
majority of sampling in the area focused on the gossanous zones,
where weak gold anomalism (10-30 ppb) was noted. No methodical
sampling of the fault zone containing patches of malachite-staining
was undertaken.
This announcement contains inside information for the purposes
of Article 7 of EU Regulation 596/2014.
For further information, please contact:
Alba Mineral Resources plc
George Frangeskides, Executive Chairman
+44 20 7264 4366
Cairn Financial Advisers LLP (Nomad)
James Caithie / Liam Murray
+44 20 7213 0880
First Equity Limited (Broker)
Jason Robertson
+44 20 7374 2212
Competent Person's Declaration
The information in this announcement that relates to the
geology, exploration results and work programme is based on
information compiled by and reviewed by EurGeol Dr Sandy M.
Archibald, PGeo, Aurum Exploration Services, who is a Professional
Geologist and Member of the Institute of Geologists of Ireland,
Association of Professional Geoscientists of Ontario, and a Fellow
of the Society of Economic Geologists. He is a geologist with
fifteen years' experience in the exploration industry, and ten
years post-graduate studies.
Sandy M. Archibald is a Technical Advisor to Alba Mineral
Resources plc and has sufficient experience which is relevant to
the style of mineralization and type of deposit under
consideration, and to the type of activity which he is undertaking
to qualify as a Competent Person as defined in the June 2009
Edition of the AIM Note for Mining and Oil & Gas Companies.
Sandy M. Archibald consents to the inclusion in the announcement of
the matters based on the information in the form and context in
which it appears and confirms that this information is accurate and
not false or misleading.
Alba's Project Portfolio
Oil & Gas
Horse Hill (Oil & Gas, UK): Alba holds a 18.1 per cent
interest in Horse Hill Developments Limited, the company which has
a 65 per cent participating interest and operatorship of the Horse
Hill oil and gas project (licences PEDL 137 and PEDL 246) in the UK
Weald Basin.
Brockham (Oil & Gas, UK): Alba has a direct 5 per cent
interest in Production Licence 235, which comprises the previously
producing onshore Brockham Oil Field.
Mining
Amitsoq (Graphite, Greenland): Alba owns a 90 per cent interest
in the Amitsoq Graphite Project in Southern Greenland and has an
option over the remaining 10 per cent.
Thule Black Sands (Ilmenite, Greenland): Alba owns 100 per cent
of mineral exploration licences 2017/29 and 2017/39 in the Thule
region, north-west Greenland.
Clogau (Gold, Wales): Alba owns 49 per cent of Gold Mines of
Wales Limited, the owner of the Clogau Gold Project in north Wales
incorporating the historic Clogau-St David's Mine.
Melville Bay (Iron Ore, Greenland): Alba is entitled to a 51 per
cent interest in mineral exploration licence 2017/41 in Melville
Bay, north-west Greenland. The licence area benefits from an
existing inferred JORC resource of 67 Mt @ 31.4% Fe.
Inglefield Land (Copper, Cobalt, Gold): Alba owns 100 per cent
of mineral exploration licence 2017/40 in north-west Greenland.
Limerick (Base Metals, Ireland): Alba has 100 per cent of the
Limerick base metal project in the Republic of Ireland.
El Mreiti (Uranium, Mauritania): Alba has applied for the
reissue of a uranium permit in northern Mauritania, centred on
known uranium-bearing showings.
Website: www.albamineralresources.com
This information is provided by RNS
The company news service from the London Stock Exchange
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