Norden Crown Intersects High Grade and Significant Widths of Broken Hill Type Mineralization IN All Three Holes Drilled at Its Fredriksson Gruva Prospect IN Sweden
NEWS RELEASE
MARCH 1ST, 2021
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NORDEN CROWN INTERSECTS HIGH GRADE AND SIGNIFICANT WIDTHS
OF BROKEN HILL TYPE MINERALIZATION IN ALL THREE HOLES DRILLED
AT ITS FREDRIKSSON GRUVA PROSPECT IN SWEDEN
Vancouver, B.C., March 1, 2021. Norden Crown Metals Corp. ("Norden Crown" or the
"Company") (TSXV:NOCR, OTC:NOCRF, Frankfurt: 03E) is pleased to announce an
exceptional discovery at its 100% owned Fredriksson Gruva prospect (“Fredriksson
Gruva”) demonstrated by significant results from the first three holes drilled below
historical mine workings. The discovery holes intersected significant mineralized widths
ranging from 8.15 to 13.60 metres of precious and base metal, massive and semi-
massive sulphide mineralization, within a geological setting unique to mineralization
belonging to the Broken Hill Type (“BHT”) clan of silver rich zinc-lead ore deposits.
“We are delighted to present to our shareholders robust silver-zinc-lead intersections
which are part of a bonafide Broken Hill Type mineralizing system at Fredriksson Gruva;
the widths and grades intersected beneath the historical mine workings suggest that the
Gumsberg Project has exceptional growth potential”. Stated Patricio Varas, Chairman
and CEO of Norden Crown. “Massive sulphide deposits are special because it is possible
to delineate large tonnages from comparatively small drill footprints due to the high
density of the mineralization. To put these results into perspective, Norden Crown’s
GUM-20-09 intercept is comparable in width to the height of a three storey building.”
The results of the drilling program at Fredriksson Gruva are further described in Tables
1, 2 and 3 below.
Table 1. Results from drilling at Fredriksson Gruva mine
Drill Prospect From To Length Zinc Lead Silver Silver
Hole Name (metres) (metres) (metres) (%) (%) (g/t) Equivalent
GUM-20-09 Fredriksson Gruva 123.70 134.05 10.35 5.24 1.84 43.86 257.61
GUM-20-10 Fredriksson Gruva 134.90 148.50 13.60 6.05 1.39 43.20 272.40
GUM-20-11 Fredriksson Gruva 151.85 160.00 8.15 3.83 0.503 18.13 152.71
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*Insufficient drilling has been completed to definitively determine true thickness; true thickness is estimated to be
between 90-95% for holes GUM-20-09 to -11 based on angle to core axis and 3D interpretation. Metal ratios are
calculated assuming 100% recoveries at US $1806 Gold, US $27.65 Silver, US $ 1.05 Lead and US $ 1.29 Zinc.
Drilling Program at Fredriksson Gruva
The three discovery drill holes (totaling 569 metres) completed at Fredriksson Gruva
were part of an eleven hole 2,365.6 metre diamond drill program completed at the
Company’s 100% owned Gumsberg Project, located in the Bergslagen Mining Region
of southern Sweden. The objective of the drill program was to demonstrate that
mineralization continues beneath the historical mine workings, which extend to 91
metres below surface. The program was also designed to confirm historical silver-zinc-
lead grades, thicknesses, and to test the continuity of this mineralization. Holes GUM-
20-09 and GUM-20-10 are positioned 30 metres down plunge of the historical
underground workings and are spaced 40 metres apart. Hole GUM-20-11 is 30 metres
below GUM-20-10 (60 metres below the historical workings) (see Figure 1).
An important aspect of the mineralization is that the massive to semi-massive sulphide
intervals are developed within a broader sequence of highly magnetic iron and
manganese-rich chemical sediments. This distinctive and thick sequence of chemical
sedimentary rocks will provide an important marker horizon that will be used to track the
mineralization along strike and at depth. Future diamond drilling at Fredriksson Gruva
will continue testing the continuity of BHT style massive sulphide mineralization and
associated iron formation below the historical mine workings where ongoing 3D
geological modeling demonstrates that silver- zinc-lead mineralization extends to at
least 290 metres in depth.
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Figure 1. Oblique section looking southwest showing recent drill intercept pierce points (red), historical
pierce points (grey) and currently modeled silver-zinc-lead mineralization (pink) at the Fredriksson Gruva
BHT Prospect.
Table 2. Drill results from the recently completed 2020-2021 drilling at
Fredriksson Gruva
Drill Prospect From To Length Zinc Lead Silver Silver
Hole Name (metres) (metres) (metres) (%) (%) (g/t) Equivalent
GUM-20-09 Fredriksson Gruva 123.70 134.05 10.35 5.24 1.84 43.86 217.57
GUM-20-09 Fredriksson Gruva 123.70 128.00 4.30 4.54 2.69 73.53 246.45
GUM-20-10 Fredriksson Gruva 122.00 130.20 8.20 1.55 0.38 14.98 63.14
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GUM-20-10 Fredriksson Gruva 120.00 120.40 0.40 8.18 0.01 2.98 216.11
GUM-20-10 Fredriksson Gruva 122.00 126.50 4.50 1.72 0.40 14.99 67.84
Incl. Fredriksson Gruva 128.00 130.20 2.20 2.15 0.61 19.63 87.93
GUM-20-10 Fredriksson Gruva 134.90 148.50 13.60 6.05 1.39 43.20 229.08
Incl. Fredriksson Gruva 134.90 146.50 11.60 6.93 1.60 50.17 263.14
and Fredriksson Gruva 139.00 143.00 4.00 10.00 2.16 70.08 374.33
GUM-20-11 Fredriksson Gruva 151.85 160.00 8.15 3.83 0.50 18.13 152.71
Incl. Fredriksson Gruva 151.85 158.60 6.75 4.47 0.54 20.69 148.12
and Fredriksson Gruva 151.85 154.50 2.65 8.21 0.25 23.61 242.35
*Insufficient drilling has been completed to definitively determine true thickness; true thickness is estimated to be
between 90-95% for holes GUM-20-09 to -11 based on angle to core axis and 3D interpretation. Metal ratios are
calculated assuming 100% recoveries at US $1806 Gold, US $27.65 Silver, US $ 1.05 Lead and US $ 1.29 Zinc.
Table 3. Drill hole locations and Orientation Information
Drill Hole Drill Hole Drill Hole Drill Hole Drill Hole Drill Hole Drill Hole
ID Easting Northing Elevation Depth Azimuth Inclination
GUM-20-09 521500 6684250 231 179 260 60
GUM-20-10 521502 6684293 236 178.5 250 59
GUM-20-11 521522 6684286 235 211.5 260 60
A geological review of this newly recognized mineralization indicates that the mineralized
formation is folded, forming a moderate to steeply eastward-plunging open anticline.
BHT mineralization at Fredriksson Gruva is associated with an extensive regional-scale
magnetite-rich iron formation(s) and corresponding magnetic anomaly which Norden
Crown intends to further delineate in the subsurface using detailed UAV magnetic
geophysical surveys. Regional magnetic geophysical data sourced from the Geological
Survey of Sweden suggests that the prospective magnetic anomaly (and coincident
magnetite-bearing iron formation) extends over 21 kilometres across the Gumsberg
West Licence (southwest of Fredriksson Gruva) greatly enhancing the exploration
potential for further BHT discoveries (see Figure 2).
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The nearest occurrence of BHT mineralization is located immediately south of the
Gumbsberg claims at Stollgruvan, where the Gammsberg mine (6.7M Tonnes1) has been
described as a BHT deposit hosted in banded iron formations 2,3,4.
Figure 2. The location of the Fredriksson Gruva BHT deposit with the greater ~ 21 kilometre long BHT
prospective magnetic anomaly.
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About Broken Hill Type Deposits
BHT Ag-Zn-Pb deposits constitute some of the largest and highest-grade ore deposits
in the world2 (see Table 4). The namesake deposit, Broken Hill, is located in western New
South Wales, Australia, and represents the largest accumulation of Pb, Zn, and Ag on
Earth2. BHT deposits constitute a distinctive type of stratiform, sediment hosted lead-
zinc mineral deposits. BHT deposits are characterized and distinguished from other
silver-zinc-lead deposits by the chemistry of the sediment that host them and that they
are usually associated spatially and temporally with volcanism.
Characteristic features of these types of deposits include:
• High grade Ag + Zn + Pb mineralized ores
• Metamorphic grades ranging to amphibolite-granulite facies
• Paleoproterozoic oxidized clastic metasedimentary host rocks in the absence of
metamorphosed carbonates/calcsilicate horizons
• Spatially associated with bimodal (felsic and mafic) intrusive and volcanic rocks,
and stratabound gahnite- and garnet-bearing rocks and iron formations
• Stacked orebodies with characteristic Pb:Zn:Ag ratios and skarn-like (generally
pyroxenoid dominated) Fe-Mn-Ca-F gangue assemblages
• Sulfur-poor assemblages
• A spatial relationship to continental rifts
Significantly, the intimate association with magnetite iron formations is considered an
important guide for Norden Crown to follow and explore for continuous mineralized
BHT deposits along the +21 kilometre belt of prospective iron formation. In addition,
the association of manganiferous garnets (spessartine), the presence of stratabound
gahnite in the metamorphosed sedimentary rocks, and anomalous base metals in
these deposit types provide an excellent first pass screening that will be useful for
evaluating these prospective iron formations for their potential to host BHT deposits.
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Table 4. Globally Significant BHT Deposits Tonnage and Grades
Millions Silver Lead Zinc Lead + Zinc Silver Equiv.*
Deposit Tonnes (g/t) (%) (%) (%) (g/t)
Australia Broken Hill 6 280 148 10 8.5 18.5 656.27
Cannington (BHP Maiden reserves) 6 45 520 11.9 4.8 16.7 954.65
Cannington (S-32 Underground 2017) 7 61 187 5.25 3.21 8.46 413.73
Cannington (S-32 Open Cut 2017) 7 29 91 2.89 2.27 5.16 231.92
Pegmont (QLD) 6 11 11 8.4 3.7 12 327.79
Sweden Zinkguravan (Vielle Montagne 2002) 8 40 100 5.5 10 15.5 550.06
Zinkgruvan (North/RioTinto/Lundin) Mined 94-16 8 19.3 84 4 9.9 13.9 495.44
Zinkgruvan (Current Lundin) 8 15.7 84 3.7 9.3 13 469.14
Stollberg 9 6.7 60 2.6 7.7 10.3 367.94
South Africa Gamsberg (S Af) 6 150 6 0.6 7.1 7.7 247.51
Big Syncline (S. AF) 6 101 13 1 2.5 3.5 116.66
Black Mt (S. Af) 6 82 30 2.7 0.6 3.3 112.96
Broken Hill (S.AF) 6 38 82 6.4 2.9 9.3 325.96
*Silver Equivalent values are calculated using metal ratios assuming 100% recoveries at US $1806 Gold, US $27.65 Silver, US $ 1.05 Lead, US $ 1.29 Zinc.
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Quality Control, Quality Assurance and Core Handling Protocols
Drill core is logged and prepped for sampling before submittal to ALS in Malå, Sweden
where it is cut, bagged and prepped for analysis. Accredited control samples (blanks
and accredited standards) are inserted into the sample intervals regularly. Samples are
dried (if necessary), weighed, crushed (70% < 2mm), and riffle split into two fractions.
One is retained (coarse reject) and the other is pulverized to 85% < 75µm. Pulps are
analyzed by ultra-trace ICP-MS (ME-MS41) and ICP-AES Au (Au-ICP22). Over detection
limit samples are reanalyzed using ore grade ICP-AES by aqua regia (ME-OG62) or by
AAS in the case of high-grade zinc (ZnAAORE).
References to other Mines and Deposits
References to other mines and deposits made in this news release provide context for
the Fredriksson Gruva and Gumsberg Project, which occurs in a similar geologic
setting, but this is not necessarily indicative that the Projects host similar grades and
tonnages of mineralization.
References
1 Raat, H., Jansson, N.F., and Lundstam, E., 2013, The Gränsgruvan Zn -Pb-Ag deposit, an outsider in the Stollberg ore field,
Bergslagen, Sweden: Geology Applied to Mineral Deposits, Biennial Meeting, 12th, Uppsala, Sweden, August 12 –15, 2013,
Proceedings, p. 12–15.
2 Spry, P.G., O’Brien, J.J., Frank, K.S., Teale, G. S., Koenig, A., Jansson, N., Allen, R. et al., 2015, Trace element compositions of
silicates and oxides as exploration guides to metamorphosed massive sulphide deposits: examples from Broken Hill, Australia, and
Stollberg, Sweden. 27th International Association of Applied Geochemists: Indicator Mineral Workshop, Tucson, April 2015, p. 23-29.
3 Beeson, R., 1990, Broken Hill-type lead-zinc deposits – an overview of their occurrence and geological setting: Transactions of the
Institution of Mining and Metallurgy, v. 99, p. 63-B175
4Spry, P.G., O’Brien, J.J., Frank, K.S., Teale, G. S., Koenig, A., Jansson, N., Allen, R.. et al. 2015, Trace element composit ions of
silicates and oxides as exploration guides to metamorphosed massive sulphide deposits: examples from Broken Hill, Australia, and
Stollberg, Sweden. 27th International Association of Applied Geochemists: Indicator Mineral Workshop, Tucson, April 2015, p. 23-29.
5Edberg, L., and Flood, B., 1982. Rapport Grb 262 SLUTRAPPORT FRAN DIAMANTBORRNINGARNA VID
FREDRIKSSONGRUVAN (GYLLINGEN) 1981/1982© Sveriges geologiska undersökning (SGU) (Geological Survey of Sweden)
6Large, R., Bull, S., Selley, D., Yang, J., Cooke, D., Garven, G., and McGoldrick, P., 2002 Controls on the formation of giant
stratiform sediment-hosted Zn-Pb-AG deposits: with particular reference to the north Australian Proterozoic, in Giant ore deposits,
CODES special publication 4, Universitiy of Tasmania, Australia. 269pp and BHP Billiton Corporate Presentation - Stewart 2002