Duluth Metals continues to identify new mineralized areas on exploration lands

Duluth Metals continues to identify new mineralized areas on exploration lands

PR Newswire

TORONTO, March 20, 2013

  *In total four new areas of mineralization discovered since the start-up of
    drilling (October 2012) with two new areas reported in this press release
  *Part of a long-term multi-phase drilling program over an extensive land
    package of approximately 8,850 acres of favorable geology adjacent to
    Duluth's Twin Metals Project
  *Currently completing Phase 1 of the exploration program with Phase 2 to
    start-up in the spring/summer
  *Program continues to target Nickel Lake Macrodike as well as Platinum
    Group mineralization on the eastern margin of the South Kawishiwi

TORONTO, March 20, 2013 /PRNewswire/ - Duluth Metals Limited ("Duluth")  (TSX: 
DM) (TSX:DM.U) is pleased to present  results from Phase 1 of the  multi-phase 
exploration program  currently underway  on  Duluth's 100%  owned  exploration 
properties in the Duluth Complex, northeast Minnesota. In addition to the two
new areas of mineralization press released by the Company on February 5, 2013,
and referred to as Areas  1 and 2, the Phase  1 program has found  significant 
mineralization in two other new areas referred to Areas 3 and 4:

  *Area 3 - In the Northeast portion of the Nickel Lake Macrodike (NLM),
    drilling has found copper-nickel-PGE mineralization along the northern
    wall of the Macrodike.
  *Area 4 - Along the eastern edge of the South Kawishiwi Intrusion (SKI),
    drilling has identified a planar structure with predominant copper
    mineralization in the Bogberry Lake area.

Furthermore, continued  drilling  in the  Southwest  portion of  the  NLM  and 
previously reported  as Area  2, continues  to show  mineralization along  the 
north wall of  the Macrodike. (see  press release dated  Feb 05, 2013,  Duluth 
Metals  Identifies  Two  New  Mineralized   Areas  on  Exploration  Lands   at 
www.duluthmetals.com for earlier results)

The Phase  1 portion  of the  exploration program  has consisted  of  geologic 
mapping, geochemistry, geophysics, and initial drill testing of targets on the
properties which cover 8,850 acres  of favorable geology adjacent to  Duluth's 
Twin Metals Project (Fig. 1). Phase 2  of the program will take advantage  of 
the spring break-up to compile and interpret geological data and define future
drill targets for the balance of  2013. Drilling will also target the  deeper 
portions of the Nickel Lake Macrodike.

"The program  has been  successful identifying  four areas  of  mineralization 
along the eastern edge  of the SKI  and the NLM  that carry significant  metal 
values and that demand additional work. This  is a huge system, with the  very 
large qualified Twin  Metals Project resource  identified in one  area of  the 
SKI, and the  system has the  potential to provide  additional large areas  of 
mineralization." commented Dean Peterson, Senior Vice President-Exploration of
Duluth Metals.

Vern Baker,  President  of Duluth  Metals  commented, "We  are  continuing  to 
explore this  large parcel  of  land with  a  long term  multi-phase  drilling 
program. As the four  identified areas of mineralization  extend over a  small 
region of  the  land  package  we will  be  continuing  to  compile  drilling, 
geological and  geophysical  data  for  the  land  holdings  and  drill  other 
strategic targets. Two of  our main target areas  are the deeper portions  of 
the NLM and  the "delta" area  west of  the mouth of  the NLM as  the Phase  1 
drilling has been concentrated in the upper portions of the Macrodike."

Area Location Map

The new areas of mineralization, Areas 1, 2, 3 and 4, are shown in Figure 1.

NLM Drilling Overview

Drilling to date has confirmed that the NLM is a southwest-northeast  striking 
complex of intrusives, dipping steeply toward the southeast. The  southeastern 
flank of the NLM  is occupied by relatively  flat-lying, layered gabbroic  and 
troctolitic intrusions, forming a keel-shaped body akin to the Great Dyke. The
northwestern flank  of  the  NLM  was formed  by  multiple  pulses  of  magma, 
including heterogeneous ultramafic and inclusion- and sulphide-bearing phases,
intruded as vertical sheet-like bodies.

As previously  reported,  initial  drilling  in  the  NLM  has  confirmed  the 
existence of sulphide-bearing magmas in the feeder conduit to the  mineralized 
SKI. In  addition, this  drilling has  provided important  stratigraphic  data 
critical to developing a robust geological and geophysical model for exploring
for high grade Ni-rich  sulphide mineralization in and  near the mouth of  the 

Area 3 - Northeast NLM Mineralization

In Northeast NLM Area 3, drilling has intersected multiple zones of  Cu-Ni-PGE 
sulfide mineralization. The three holes completed to date, 13-DM-37, 13-DM-40,
and 13-DM-43, were all collared in mineralization. 13-DM-37 and 13-DM-40  were 
drilled to  the  north  and vertically,  respectively,  and  each  intersected 
significant intersections of Cu-Ni-PGE  mineralized material. Following up  on 
these initial results, 13-DM-43 was drilled down-dip (-50° inclination) in the
NLM, attempting to parallel the mineralized zone to depth. In addition to  the 
near-surface mineralization, 13-DM-43  intersected two additional  mineralized 
zones at depth. Following  these encouraging results,  13-DM-48 is drilling  a 
more steeply inclined hole (-75° inclination) in the same zone. In addition to
the  near-surface  mineralization,  13-DM-48   the  highest  grade   Cu-Ni-PGE 
mineralization identified thus far in the NLM.

Highlights of drilling include: (True thickness unknown.)

  *13-DM-037 returned a 89.5 foot intersection of 0.41% Cu with 0.142 g/t TPM
  *13-DM-040  returned a 187 foot intersection of 0.44% Cu with 0.176 g/t
  *13-DM-043 returned a 252 foot intersection of 0.38% Cu with 0.176 g/t TPM,
    including 18.6 feet of 0.57% Cu, 0.11% Ni, and 0.468 g/t TPM.
  *13-DM-048 returned a 204.9 foot intersection of 0.37% Cu and 0.144 g/t TPM
    including 30 feet of 0.56% Cu, 0.11% Ni and 0.274 g/t TPM, as well as a 6
    foot intersection of 2.059 g/t TPM and a 5 foot intersection of 0.702 g/t
    TPM. Note: This hole is currently being drilled and additional assays are

Full assay results are shown in the following Table 1:
Drill       From     To    Thickness  Cut-off  Cu    Ni    Pt     Pd     Au     TPM
Hole         (ft)     (ft)      (ft)                %      %      g/t     g/t     g/t     g/t
            16.2   105.7     89.5     @0.3%    0.41  0.09  0.038  0.075  0.030  0.142
13-DM-037                                 Cu
            6.5    193.7     187.2    @0.3%    0.44  0.10  0.052  0.091  0.033  0.176
13-DM-040                                 Cu
             8     213.3     205.3    @0.3%    0.39  0.07  0.046  0.079  0.035  0.161
13-DM-043                                 Cu
           194.7   213.3     18.6     @0.5%    0.57  0.11  0.134  0.241  0.094  0.468
including                                 Cu
           831.5   863.3     31.8     @0.3%    0.35  0.07  0.025  0.050  0.021  0.096
13-DM-043                                 Cu
           1791.7   1895     103.3    @0.3%    0.34  0.07  0.024  0.066  0.024  0.113
13-DM-043                                 Cu
            1935   1996.3    61.3     @0.3%    0.49  0.09  0.045  0.118  0.040  0.202
13-DM-043                                 Cu
           1948.5  1982.5     34      @0.5%    0.60  0.11  0.054  0.136  0.044  0.234
including                                 Cu
           2047.8  2082.6    34.8     @0.3%    0.45  0.09  0.037  0.100  0.038  0.175
13-DM-043                                 Cu
            23.7   228.6     204.9    @0.3%    0.37  0.08  0.035  0.076  0.033  0.144
13-DM-048                                 Cu
            121     151       30      @0.5%    0.56  0.11  0.068  0.145  0.060  0.274
including                                 Cu
           828.4   834.4       6      @0.5     0.79  0.18  0.543  1.080  0.436  2.059
13-DM-048                                 g/t TPM
            853     858        5      @0.5     0.15  0.02  0.405  0.275  0.022  0.702
13-DM-048                                 g/t TPM
Note - 13-DM-048 is currently being drilled and additional assays are pending.

Area 4 - Bogberry Lake Mineralization along the eastern edge of the SKI

Drilling in Area 4 targeted a  flat-lying conductive anomaly identified in  an 
airborne  geophysical   survey.   Drilling  identified   a   flat-lying   zone 
characterized by a graphitic layer overlying chalcopyrite mineralization.  The 
zone  has  been  intersected  by  all  seven  holes  completed  to  date.  The 
mineralization is  hosted by  anorthositic wallrock  adjacent to  the  eastern 
margin of the SKI, and is characterized  by a different tenor from most  other 
mineralization seen thus far in  the SKI. Mineralization corresponding to  the 
main conductive  body  is extremely  low  in  PGEs, however  13-DM-36  in  the 
northern part  of  the area  returned  higher grade  PGEs,  and to  the  south 
drilling and rock sampling has found PGE-enriched zones. These results suggest
mobilization and fractionation of sulphidic Cu-Ni-PGE bearing fluids into  the 
anorthositic wallrock of the SKI, and  highlight the potential for high  grade 
PGE mineralization in the wallrock of the mineralized SKI.

Highlights of drilling include: (True thickness estimated at 65% of the  cored 

  *13-DM-027 returned a 44.4 foot intersection of 0.35% Cu.
  *13-DM-036  returned a 3.6 foot intersection of 0.65% Cu with 0.811 g/t

Full assay results are shown in Table 2:
Drill      From   To     Thickness  Cut-off  Cu    Ni    Pt     Pd     Au     TPM
Hole        (ft)    (ft)      (ft)                %      %      g/t     g/t     g/t     g/t
12-DM-019  726.4  786.0    59.6       @0.2%  0.23  0.05  0.004  0.005  0.006  0.015
12-DM-023  828.4  857.8    29.4       @0.2%  0.24  0.04  0.009  0.031  0.008  0.049
12-DM-027  689.7  734.1    44.4       @0.3%  0.35  0.08  0.014  0.014  0.017  0.045
12-DM-027  849.7  859.4     9.7       @0.3%  0.44  0.05  0.024  0.015  0.026  0.065
12-DM-028  637.5  660.7    23.2       @0.2%  0.23  0.05  0.003  0.009  0.007  0.018
13-DM-032  696.7  735.2    38.5       @0.2%  0.22  0.03  0.009  0.010  0.007  0.026
13-DM-032  797.7  882.3    84.6       @0.2%  0.21  0.05  0.011  0.010  0.010  0.030
13-DM-035  644.4  648.3     3.9       @0.3%  0.34  0.08  0.017  0.021  0.016  0.054
13-DM-036  717.5  721.1     3.6       @0.3%  0.65  0.04  0.321  0.333  0.157  0.811

Additional holes in Area 2 - Nickel Lake Macrodike Mineralization

Drilling in southwest NLM  (Area 2) has been  focused on following  previously 
reported intercepts of  Cu-Ni-PGE bearing  sulphide mineralization  previously 
reported in holes 12-DM-17 and 12-DM-18.

Significant widths of mineralization in the NLM area have been identified both
in surface outcrop and two additional drill holes. Similar to the  previously 
reported results,  this  material is  characterized  by a  high  Cu:Ni  ratio, 
suggesting sulphide fractionation  occurred in  the NLM.  Highlights from  the 
latest drilling to date are as follows: (True thickness is estimated at  about 
95% of core length.)

  *12-DM-022 returned a 240 foot intersection of 0.30% Cu, 0.06% Ni and 0.17
    g/t TPM
  *12-DM-025 returned a 219 foot intersection of 0.33% Cu, 0.06% Ni and 0.18
    g/t TPM

The Cu-Ni-PGE  mineralization  intersected in  four  drill holes  to  date  is 
flanked to  the  southeast  by  a  second  sulphide  mineralized  phase.  This 
mineralization has been  intersected in three  drill holes, and  while low  in 
grade, has a  distinctly higher  Ni tenor than  other sulphide  mineralization 
identified in the NLM. This material,  characterized by a low Cu:Ni,  provides 
further evidence  indicating the  NLM was  a dynamic  magma conduit  that  saw 
multiple pulses of sulphide-bearing magma during the intrusion of the SKI.

Full assay results are shown in the following Table 3:
Drill      From   To     Int    Cut-off  Cu    Ni    Pt     Pd     Au     TPM    Notes
Hole        (ft)    (ft)    (ft)              %      %      g/t     g/t     g/t     g/t
12-DM-021  39.9   274.0  234.1          0.12  0.05  0.016  0.026  0.009  0.050       Low
12-DM-022  125.0  365.0  240.0    @0.3%  0.31  0.06  0.048  0.080  0.040  0.168         
12-DM-025  35.9   210.6  174.7          0.19  0.06  0.029  0.061  0.027  0.117       Low
12-DM-025  243.8  463.3  219.5    @0.3%  0.33  0.06  0.050  0.085  0.047  0.182         
13-DM-026  62.4   294.6  232.2          0.10  0.04  0.011  0.019  0.006  0.036       Low

Ongoing drilling efforts  are aimed  at demonstrating the  continuity of  this 
mineralization  on  strike   and  at   depth,  as  well   as  following   this 
mineralization to deeper sections of the NLM. Future drilling efforts  within 
deeper  sections  of  the  NLM  will   focus  on  looking  for  higher   grade 
mineralization analogous to  that found  in the Maturi  Deposit and  potential 
concentrations of Ni-rich massive sulphide. Drilling the most prospective area
for potential concentrations of massive sulphide at the mouth of the NLM  will 
require drier road building conditions in order to access that area.

Area 1 - East Shore PGE Mineralization

Exploration work is also  continuing on the first  new area of  mineralization 
referred to as Area 1. PGE mineralization within this area along the  eastern 
side of the SKI and within the  adjacent anorthositic rocks on the East  Shore 
Property was  previously reported  in  the Company's  February 5,  2013  press 
release. The near  term focus is  to compile and  analyze the geological  and 
assay data from both drilling as well as surface mapping and sampling in order
to determine the nature and geometry of this mineralization, which is  unusual 
in that it is highly enriched in PGEs relative to copper.

Ongoing Exploration Program

Duluth is continuing with an  extensive exploration program for the  remainder 
of 2013. The spring season will see a reduction in drilling activity as sites
become difficult to  access due to  the spring melt.  This press release  can 
also be found on the Company website at www.duluthmetals.com.

About the Sampling

Duluth Metals  adheres to  a rigorous  QA/QC  program as  a part  of  sampling 
procedures throughout  the  drill  program. Duplicate,  blank,  and  reference 
standards  are  inserted  into  the  sample  stream  prior  to  submittal  the 
laboratory. Half core samples  are crushed and pulverized  at ALS Minerals  in 
Thunder Bay,  Ontario,  and  then  shipped to  its  analytical  facilities  in 
Vancouver, British Columbia. Samples are analyzed  for Au, Pt, and Pd using  a 
30 gram fire assay  with an ICP-AES  finish, and for Cu,  Ni, and other  trace 
elements using a four acid (near total) digestion and a combination of  ICP-MS 
and ICP-AES finishes. Overlimits are re-analyzed using sodium peroxide fusion,
acid dissolution,  followed by  an ICP-MAES  finish. The  remaining half  core 
samples are stored in Minnesota.

Phillip Larson, P. Geo. is the  Qualified Person for Duluth Metals and  Senior 
Geologist for Duluth  Metals, in  accordance with  NI 43-101  of the  Canadian 
Securities Administrators,  and is  responsible for  Duluth Metal's  technical 
content of this press  release and quality assurance  of the exploration  data 
and analytical results.

About Duluth Metals Limited

Duluth Metals  Limited is  committed to  acquiring, exploring  and  developing 
copper, nickel and platinum  group metal (PGM) deposits.  Duluth Metals has  a 
joint venture with Antofagasta plc on the Twin Metals Project, located  within 
the rapidly emerging  Duluth Complex mining  camp in north-eastern  Minnesota. 
The Duluth Complex hosts one  of the world's largest undeveloped  repositories 
of copper, nickel and PGMs,  including the world's third largest  accumulation 
of  nickel  sulphides,  and  one  of  the  world's  largest  accumulations  of 
polymetallic copper and platinum group  metals. Aside from the joint  venture, 
Duluth Metals retains a 100% position on approximately 40,000 acres of mineral
interests on exploration  properties adjacent  to and nearby  the Twin  Metals 
Minnesota LLC joint venture.

This   press   release   contains   forward-looking   statements    (including 
"forward-looking  information"  within  the  meaning  of  applicable  Canadian 
securities legislation and "forward-looking statements" within the meaning  of 
the US Private Securities  Litigation Reform Act of  1995) relating to,  among 
other things,  the  results  of  drilling  operations  of  Duluth  Metals  and 
exploration and mine development. Generally, forward-looking statements can be
identified by  the  use of  words  such as  "plans",  "expects" or  "does  not 
expect",  "is  expected",  "budget",  "scheduled",  "estimates",  "forecasts", 
"intends",  "anticipates"  or  "does   not  anticipate",  or  "believes",   or 
variations of  such words  and  phrases or  statements that  certain  actions, 
events or results "may", "could", "would", "might" or "will be taken", "occur"
or "be achieved".  Duluth Metals  has relied on  a number  of assumptions  and 
estimates  in  making  such  forward-looking  statements,  including,  without 
limitation, the prices of copper, nickel and platinum group metals (PGMs)  and 
the costs associated with continuing exploration and mining development.  Such 
assumptions and estimates are made in light of the trends and conditions  that 
are considered to be  relevant and reasonable  based on information  available 
and the circumstances  existing at  this time. A  number of  risk factors  may 
cause actual  results, level  of  activity, performance  or outcomes  of  such 
exploration and/or  mine development  to be  materially different  from  those 
expressed or  implied by  such forward-looking  statements including,  without 
limitation, whether  such  discoveries  will  result  in  commercially  viable 
quantities of  such  mineralized  materials, the  possibility  of  changes  to 
project parameters as  plans continue to  be refined, the  ability to  execute 
planned exploration  and  future  drilling programs,  possible  variations  of 
copper, nickel  and PGM  grade  or recovery  rates,  the need  for  additional 
funding to continue exploration efforts,  changes in general economic,  market 
and business conditions,  and those other  risks set forth  in Duluth  Metals' 
most recent annual information  form under the heading  "Risk Factors" and  in 
its other public filings. Statements related to "reserves" and "resources" are
deemed forward-looking  statements as  they  involve the  implied  assessment, 
based  on  realistically  assumed  and  justifiable  technical  and   economic 
conditions, that  an  inventory  of mineralization  will  become  economically 
extractable.  Forward-looking  statements   are  not   guarantees  of   future 
performance and such information  is inherently subject  to known and  unknown 
risks, uncertainties and other factors that  are difficult to predict and  may 
be beyond the control of Duluth  Metals. Although Duluth Metals has  attempted 
to identify  important risks  and  factors that  could cause  actual  actions, 
events or results to differ materially from those described in forward-looking
statements, there may be other factors and risks that cause actions, events or
results not to be as  anticipated, estimated or intended. Consequently,  undue 
reliance should not be placed on such forward-looking statements. In addition,
all forward-looking statements in this press release are given as of the  date 
hereof. Duluth  Metals disclaims  any  intention or  obligation to  update  or 
revise any forward-looking statements, whether as a result of new information,
future events or otherwise, save and  except as may be required by  applicable 
securities laws. The forward-looking statements contained herein are expressly
qualified by this disclaimer.

Cautionary Note to United States  Investors Concerning Estimates of  Indicated 
and Inferred Mineral Resources
This press release uses the terms "Indicated Mineral Resources" and  "Inferred 
Mineral Resources"  in  accordance  with the  Canadian  Institute  of  Mining, 
Metallurgy and  Petroleum (CIM)  Definition Standards.  While such  terms  are 
recognized under Canadian securities legislation, the United States Securities
and Exchange Commission  does not  recognize these terms.  The term  "Inferred 
Mineral Resource" refers to 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. These estimates are based on limited information and it cannot  be 
assumed that  all  or any  part  of an  "Inferred  Mineral Resource"  will  be 
upgraded  to  a  higher  classification  resource,  such  as  "Indicated"   or 
"Measured", as a  result of  continued exploration.  Accordingly, an  estimate 
relating to an "Inferred Mineral Resource" is insufficient to allow meaningful
application of technical and economic parameters or to enable an evaluation of
economic viability.  Under Canadian  securities legislation,  estimates of  an 
"Inferred Mineral Resource"  may not form  the basis of  feasibility or  other 
economic studies. Investors are cautioned not  to assume that all or any  part 
of an  "Inferred  Mineral  Resource"  is  economically  or  legally  mineable. 
Investors are also cautioned not to assume that all or any part of "Indicated"
will ever  be  converted  into  "Mineral  Reserves"  (being  the  economically 
mineable part of an "Indicated" or "Measured Mineral Resource").

SOURCE Duluth Metals Limited

Image with caption: "Figure 1 - Project Area Location, Bedrock Geology and
Resources Map (CNW Group/Duluth Metals Limited)". Image available at:


Mara Strazdins
Vice President Investor Relations and Corporate Communications
Telephone: (416) 369-1500 ext. 222

Vern Baker
Telephone: (651) 389-9990

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