TIDMRRR
RNS Number : 5746O
Red Rock Resources plc
11 October 2021
Red Rock Resources PLC
("Red Rock" or the "Company")
DRC Copper-Cobalt Project - Drill Programme Interim Update
11 October 2021
Red Rock Resources Plc, the natural resource development company
with interests in gold, copper/cobalt, and other minerals,
announces an update on the reverse circulation (RC) drill programme
at the Luanshimba copper-cobalt project in the Haut-Katanga
Province of the Democratic Republic of Congo.
The Luanshimba project is operated by Red Rock Galaxy SA, an 80%
owned Congolese subsidiary of Red Rock.
Highlights
-- Programme recently completed with 2,469m of RC drilling, in 29 holes of 60m to 100m.
-- Three prospects drilled, at Kilembwe South, Kilembwe East, and Bukulu.
-- 2,763 samples including QAQC samples prepared at ALS Global's
preparation laboratory before sending in batches to the ALS
laboratory in South Africa for analysis.
-- The majority of assay results received, but those from later
holes including some with significant visible mineralisation still
awaited.
-- Holes intercepted clastics from carbonaceous shales and
carbonates of the Lower Roan subgroup in Zambian Copperbelt-type
strata.
-- Multiple fault zones and fault gouges encountered in Kilembwe
South where Cu/Co anomalism identified from previous soil
geochemistry.
-- Cu-Co Heterogenite oxide mineralisation found in multiple
fault gouges, with sulphides identified at the bottom of some
holes.
-- At the Bukulu prospect, a pyritic zone overlying
chalcopyrites encountered under the carbonaceous shales, supporting
the thesis of a vertical mineral zonation similar to copper-bearing
Lower Roan strata of the Zambian Copperbelt.
-- Full interpretation and reporting of grades will be
undertaken following receipt of final assay results.
The drill programme is being carried out by Rubaco SARL, with
geological support being provided by Minerals Exploration
Associates SARL ("Minex Consulting SARL").
Red Rock Chairman Andrew Bell comments : "Further results
support the interpretation of a typical Lower Roan assemblage with
prominent cobalt accompanied by copper in oxides near surface
underlain by sulphide-bearing rocks with indications of vertically
zoned copper minerals.
The limited penetration of the RC rig used in this initial
programme means that the sulphide-bearing strata were in many holes
not reached, but the drill campaign has achieved its primary
objective in evidencing that potentially significant
mineralisation, both hypogene and supergene, has taken place within
the license area.
It is too soon to speak of a discovery or of economic potential,
as we await the full results from the laboratory and will then have
to assess both the grades, the volume of data from the relevant
strata, and the continuity between holes.
However we can already feel encouraged by the many positive
indications from this small maiden drill programme. We look forward
to giving a full report within the next weeks."
Background
Red Rock owns 80% of the Luanshimba Project, which is situated
65 km south-east of the provincial capital of Lubumbashi in
Haut-Katanga, in a 420 hectare prospecting license (PR13513) in the
Congolese Copperbelt.
The tenement is situated along a disrupted anticline with
undifferentiated Roan sediments of the Mwashya Subgroup draping off
a nearby basement dome, similar to some other Cu-deposits in the
immediate area.
A comprehensive termite mound sampling programme combined with
reconnaissance geological mapping was conducted in 2018 over an
area underlain by prospective Roan Group sediments. 452 samples
were collected on a 100x100m grid, and then split, with one batch
sent to ALS Laboratories in Johannesburg while the other was
retained for XRF analysis.
Red Rock identified in the southern part of the licence a 2km
long anomaly up to 500m wide striking ENE, with anomalous metal
assays with peak values of 519ppm Cu and 425ppm Co, corroborating
earlier XRF values and partly coincident with above average
contents of pathfinder elements Bi and V. Given the regionally low
background, these results were considered indicative of likely
Cu-Co mineralisation at depth.
In the north, a SE- striking copper-cobalt anomaly some 1,400m
by 300m wide, while more subdued, was considered significant as it
clearly mimics the regional metalliferous stratigraphic and
structural trend.
70.72 line-kilometres of magnetic data was collected in December
2020 by a ground survey conducted on north-south lines with a 100m
line spacing and subjected to interpretation in early 2021 by
Ronacher McKenzie Geoscience of Sudbury, Ontario. This was then
followed up by an induced polarisation (IP) and resistivity
programme across the three target areas.
In the current drill programme 2,469 metres has been completed
at the Luanshimba Project over all three identified prospects,
Kilembwe South, Kilembwe East and Bukulu. Depth of the RC holes
varies between 60 and 100 metres.
A total of 2,763 samples including QAQC samples have been
collected from the RC Drilling. Sample batches were sent to Congo
Analytical Laboratory (COAL) in Lubumbashi for preparation. COAL is
operating the ALS Preparation facility in Lubumbashi. The pulp
samples have been and are being sent to ALS Laboratory in South
Africa for analysis. Multi-element ICP method has been requested
for all samples; then each sample that will returns over 1,000 ppm
Cu/Co will then be re-assayed using a specific ICP method
(ME-OG62).
Completed RC holes intercepted lithological units comprising
both clastics (from sandstone sandy siltstone to
mudstone-carbonaceous shale) and carbonate rocks (dolomites)
belonging to the Lower Roan Subgroup of the Zambian type
Copperbelt.
Multiple fault zones and fault gouges have been identified
occurring in the Kilembwe South Prospect where Cu and Co anomalies
were identified from the previous soil geochemistry survey.
Heterogenite (Cu-Co oxides) have been found in replacement mode in
the multiple fault gouges overlying a pink arkosic sandstone.
In addition to the fault zones and fault gouges, RC holes
completed in the Bukulu Prospect, situated north to the Kilembwe
Prospect, intercepted a pyritic zone overlying a chalcopyrite zone
hosted in a light greenish grey dolomitic siltstone underlying the
carbonaceous shale that might be interpreted as a key
stratigraphical marker of the Lower Roan Subgroup of the
Zambian-type Copperbelt. This indicates the same vertical mineral
zonation including chalcocite-bornite-chalcopyrite-pyrite that
characterises the hypogene mineralogy of many Zambian Cu
deposits.
The technical information in this report has been compiled and
reviewed under the supervision of Kazadi S-B. Barry (MSc),
Pr.Sc.Nat., MGSSA. who is a member of the South African Council for
Natural Scientific Professions. Mr. Kazadi has sufficient
experience in the style of mineralisation and type of deposit under
consideration. Mr. Kazadi consents to the inclusion in this
announcement of the matters based on his information in the form
and context in which it appears. Mr Kazadi is a Managing Director
of Mineral Exploration Associates SARL, consultants (under the name
Minex Consulting) to the Company.
This announcement contains inside information for the purposes
of Article 7 of the Market Abuse Regulation (EU) 596/2014 as it
forms part of UK domestic law by virtue of the European Union
(Withdrawal) Act 2018 ("MAR"), and is disclosed in accordance with
the Company's obligations under Article 17 of MAR.
GLOSSARY
Arkose: a weathered sedimentary sandstone primarily composed of quartz and feldspar
Bornite: a sulphide copper mineral with chemical composition Cu(5) FeS(4)
Clastic: a rock consisting of broken pieces of other rock
Chalcocite: an important sulphide copper mineral with chemical composition Cu(2) S
Chalcopyrite:the most abundant sulphice copper mineral with
chemical formula CuFeS
Dolomite: a sedimentary calcium magnesium carbonate rock
Fault gouge: crushed and fragmented rock produced by friction
between the two sides of a moving fault
Heterogenite:a mineral oxide of cobalt, sometimes containing
copper and iron
Hypogene: used of processes within the earth's crust
Lower Roan Subgroup: the sediments deposited in a continental
rift basin after 880 Ma, that host the majority of Zambian
Copperbelt Cu-Co deposits
Pyrite: the most abundant sulphide mineral, an iron sulphide
with chemical composition FeS(2)
Supergene: used of processes near the earth surface
For further information, please contact:
Andrew Bell 0207 747 9990 Chairman Red Rock Resources Plc
Scott Kaintz 0207 747 9990 Director Red Rock Resources Plc
Roland Cornish/ Rosalind Hill Abrahams 0207 628 3396 NOMAD Beaumont Cornish Limited
Jason Robertson 0207 374 2212 Broker First Equity Limited
This information is provided by RNS, the news service of the
London Stock Exchange. RNS is approved by the Financial Conduct
Authority to act as a Primary Information Provider in the United
Kingdom. Terms and conditions relating to the use and distribution
of this information may apply. For further information, please
contact rns@lseg.com or visit www.rns.com.
RNS may use your IP address to confirm compliance with the terms
and conditions, to analyse how you engage with the information
contained in this communication, and to share such analysis on an
anonymised basis with others as part of our commercial services.
For further information about how RNS and the London Stock Exchange
use the personal data you provide us, please see our Privacy
Policy.
END
MSCBIBDGSSGDGBC
(END) Dow Jones Newswires
October 11, 2021 02:00 ET (06:00 GMT)
Red Rock Resources (LSE:RRR)
Gráfica de Acción Histórica
De Mar 2024 a Abr 2024
Red Rock Resources (LSE:RRR)
Gráfica de Acción Histórica
De Abr 2023 a Abr 2024
