VANCOUVER, BC, Jan. 7, 2021 /CNW/ - Norden Crown Metals
Corp. ("Norden
Crown" or the "Company") (TSXV:
NOCR), (OTC: BORMF) (Frankfurt:
03E) is pleased to announce the completion of the first drill hole
at the Fredriksson Gruvan prospect (GUM-20-09; 179m) which has intersected 11.0 meters of
stratiform sulphide mineralization interpreted to be Broken Hill
Type (BHT) precious metal enriched base metal mineralization.
The 11.0 meter intercept consists of massive to semi-massive
sulphide mineralization, including sphalerite (zinc sulphide) and
galena (lead sulphide). The intercept occurs 35 meters below
historical mine workings which produced 45,000 tonnes grading 49
g/t silver, 5.77% zinc, 1.84% lead2. The
Fredriksson Gruvan prospect is located on the 100% owned
silver-zinc-lead-gold Gumsberg Project located in the Bergslagen
Province of Southern Sweden.
"The drilling of stratiform sulphides on our first drill hole
below the mine workings at Fredriksson Gruvan is of great
importance, as it most assuredly confirms the continuity of the
mineralization at depth below the old mine". Stated
Patricio Varas, Chairman and CEO of
Norden Crown Metals. "Furthermore, the confirmation that
we are testing a Broken Hill Type Zn-Pb-Ag mineralized prospect is
hugely encouraging as these style deposits are very few around the
world and include some of the largest accumulations of
Pb-Zn-Ag on Earth1,3.
Ongoing diamond drilling at Fredriksson Gruva will test the
continuity of massive sulphide mineralization below the historical
mine workings where recent 3D geological modeling demonstrates
that silver-zinc-lead mineralization could extend to at least 400
meters depth.
Visual core inspection by Norden's Senior technical staff
confirms that GUM-20-09 intersected an 11m massive to semi-massive sulphide body of
mineralization extending from 123m to 134m.
Drill core is currently being cut and sampled. Samples will
be shipped to ALS in Malå, Sweden
for analysis and assay results are expected in 4 to 6 weeks.
Drill Hole: GUM-20-09
Geological observations of the core confirm Norden's preliminary
interpretation that precious metal enriched base metal
mineralization at Fredrikssons Gruvan belongs to the Broken Hill
Type ore deposit clan.
Significant observations from GUM 20-09 that are suggestive of
BHT style mineralization include:
OBSERVATION
|
SIGNIFICANCE
|
Stratiform Zn-Pb
mineralization; variably tectonically
remobilized
|
Broken Hill-Type
deposits are dominated by stratiform mineralization,
variably remobilized during deformation and
metamorphism1,3,4.
|
Mineralization is
pyrite-poor, sphalerite-galena rich
|
BHT deposits tend
to be pyrite-poor and sphalerite-galena rich
compared to Volcanogenic Massive Sulphide
deposits4.
|
Hosted by
garnet-rich metamorphosed sedimentary
strata.
|
BHT deposits form
in association with stratabound garnet- and
gahnite-bearing metamorphosed sedimentary
rocks1,3,4.
|
Intimate
association with magnetite iron formation.
The garnet-magnetite-sulphide rock is interpreted to
be metamorphosed chemical sediment (exhalite).
|
BHT stratiform
sulfide deposits are commonly associated with
magnetite iron formation (e.g. Aggeneys, South Africa) or the
iron
formation may represent the lateral equivalent of the
stratiform
sulfide (Broken Hill, Australia)1,3,4.
|
Garnet within the
mineralized interval is orange-
brown, suggesting it is the Manganese-rich garnet
spessartine (i.e. this is a Mn-rich system).
|
Many BHTs are
relatively manganese (Mn)-rich. The Broken Hill Group
that hosts the Broken Hill Deposit, and the sulfide deposit itself,
are
characterised by the Mn-garnet
spessartine3,4.
|
Association with
calc-silicates: some calc-silicate
minerals (amphibole-pyroxene, and garnet) occur
within the mineralization, and a calc-silicate bed
occurs in the hanging-wall.
|
Some BHT deposits,
including the type example at Broken Hill,
Australia, are enriched in calc-silicate and calcium-bearing
minerals
(pyroxene, pyroxenoid, garnet, carbonates) and the host
stratigraphic
succession contains stratiform calc-silicate
rocks1,3,4.
|
Paucity of intense
Mg-rich alteration and intensely
mica-quartz altered rocks. Much of the alteration is
not feldspar-destructive.
|
This suggests that
the mineralization is not a Volcanogenic Massive
Sulphide (VMS) or Garpenberg-type system and is more similar to
a
stratiform BHT or Sedimentary Exhalative (SEDEX)
system1,3,4.
|
Metamorphism is
amphibolite grade
|
BHT deposits
almost invariably occur in host successions that have
been metamorphosed to amphibolite to granulite
grade1,3,4.
|
Host succession is
Paleo- to Meso-Proterozoic in age
|
BHT deposits
appear to be restricted to host successions of Paleo- to
Meso-Proterozoic age1,3,4.
|
Norden Crown's geological
modelling is based on historical mining and drilling data and
demonstrates that silver-lead-zinc mineralized zones are associated
with a moderately east plunging fold geometry and mineralization is
open in all directions (Figure 1). Test mining from an open pit
where these zones reach the surface produced 21,000 tonnes grading
53 g/t silver, 5.13% zinc, and 1.7% lead2. Subsequent
underground mining production down to 91 meters produced and
additional 45,000 tonnes grading 49 g/t silver, 5.77% zinc, 1.84%
lead2.
Figure 1. Oblique 3D interpretation of mineralization at
Fredriksson Gruvan showing the location of the 11.00 meters of semi
and massive sulphide mineralization in hole GUM-20-09. Note
that the mineralization is interpreted to extend beyond the limits
of historical drilling at depth and laterally.
About Fredriksson Gruvan (Fredriksson
Mine)
Fredriksson Gruvan was discovered in 1976 by LKAB Prospektering
AB2. Exploration was carried out in 1976 and 1977
including surface trenching, sampling and drilling of 9 diamond
drill holes, which identified precious metal enriched base metal
mineralization3. In 1977, AB Statsgruvor (ABS)
acquired the Fredrikssongruvan prospect and conducted open pit test
mining in 1978. Test mining was conducted to a depth of 20
meters below surface and produced 21,500 tonnes grading 53 g/t
Silver, 5.13% zinc, and 1.7% lead3. A total of 11
additional holes were drilled in 1979 to test the down plunge
extent of mineralization. Between 1980 and 1981 mining
activites resumed and an underground tram was installed. A
total of 45,000 additional tonnes grading 49 g/t silver,
5.77% zinc, 1.84% lead were produced from workings that extend to a
depth of 91 meters (4 underground levels)2. Norden
Crown Metals Corp. staked the the Fredriksson Gruva prospect as
part of a larger staking acquisition (Gumsberg nr 9) in March,
2017. This licence is refered to as "Gumsberg West" and forms
the western half of the highly prospective Gumsberg Project.
1Spry,
Paul & Teale, Graham & Steadman, Jeffrey. 2009.
Classification of Broken Hill-Type Pb-Zn-Ag Deposits: A Refinement.
AGU Spring Meeting Abstracts.
|
|
2Edberg, L., and Flood, B., 1982.
Rapport Grb 262 SLUTRAPPORT FRAN DIAMANTBORRNINGARNA VID
FREDRIKSSONGRUVAN (GYLLINGEN) 1981/1982© Sveriges geologiska
undersökning (SGU) (Geological Survey of Sweden)
|
|
3Beeson, Robert. (1990). Broken
Hill-type lead-zinc deposits - an overview of their occurrence and
geological setting. Transactions Institution of Mining &
Metallurgy. 99. 163-175.
|
|
4Walters S.G. 1998. Broken Hill-Type
deposits. AGSO Journal of Australian Geology and Geophysics, 17(4),
229-237.
|
About Norden
Crown Metals Corp.
Norden Crown is a mineral
exploration company focused on the discovery of silver, zinc,
copper, and gold deposits in exceptional, historical mining project
areas spanning Sweden and
Norway. The Company aims to discover new economic mineral
deposits in known mining districts that have seen little or no
modern exploration techniques. The Company is led by an
experienced management team and an accomplished technical team,
with successful track records in mineral discovery, mining
development and financing.
Qualified Person
Daniel MacNeil, P.Geo, a
Qualified Person as defined by National Instrument 43-101
Standards of Disclosure for Mineral Projects, has read and
approved all technical and scientific information contained in this
news release. Mr. MacNeil is Vice President Exploration for
Norden Crown.
On behalf of Norden
Crown Metals
Corp.
Patricio Varas, Chairman and
CEO
Neither TSX Venture Exchange nor its Regulation Services
Provider (as that term is defined in the policies of the TSX
Venture Exchange) accepts responsibility for the adequacy or
accuracy of this release.
Cautionary Note Regarding Forward-Looking Statements
This news release contains certain statements that may be deemed
"forward–looking statements". Forward–looking statements are
statements that are not historical facts and are generally, but not
always, identified by the words "expects", "plans", "anticipates",
"believes", "intends", "estimates", "projects", "potential" and
similar expressions, or that events or conditions "will", "would",
"may", "could" or "should" occur. Forward-looking statements
may include, without limitation, statements relating to future
outlook and anticipated events, such as the successful completion
of the Private Placement or the anticipated use of proceeds of the
Private Placement by the Company. Although Norden Crown believes the expectations expressed
in such forward–looking statements are based on reasonable
assumptions, such statements are not guarantees of future
performance, are subject to risks and uncertainties, and actual
results or realities may differ materially from those in the
forward–looking statements. Such material risks and
uncertainties include, but are not limited to, Norden Crown's ability to raise sufficient
capital to maintain its mineral tenures and concessions in good
standing, to explore and develop its projects, to repay its debt
and for general working capital purposes; changes in economic
conditions or financial markets; the ability of Norden Crown to obtain the necessary permits and
consents required to explore, drill and develop the projects and if
obtained, to obtain such permits and consents in a timely fashion
relative to Norden Crown plans and
business objectives for the projects; the general ability of
Norden Crown to drill test its
projects and find mineral resources; if any mineral resources are
discovered or acquired, the Company's ability to monetize any such
mineral resources; and changes in environmental and other laws or
regulations that could have an impact on the Company's operations.
Forward–looking statements are based on the reasonable beliefs,
estimates and opinions of Norden
Crown management on the date the statements are made. Except
as required by law, Norden Crown
undertakes no obligation to update these forward–looking statements
in the event that management's beliefs, estimates or opinions, or
other factors, should change.
SOURCE Norden Crown Metals Corp.