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Mandalay Resources Corporation extends mineralized zones at its Costerfield gold-antimony mine, Australia

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TORONTO, Jan. 7, 2013 /CNW/ - Mandalay Resources Corporation ("Mandalay" or the "Company") (TSX: MND) is pleased to provide drilling results from its 100%-owned Costerfield gold-antimony mine in Victoria, Australia. Results presented here were acquired between the cutoff date for the Company's previous exploration update for Costerfield on July 9, 2012 and December 31, 2012.

Highlights include:

  • N-Lode - New, widely spaced drill intercepts have confirmed much of the northward extension of the N-Lode mineralization toward the previously reported high-grade intercept located approximately 300 metres ("m") north of the previous limit of Inferred Mineral Resources. Infill drilling and mine development sampling in the area of the previously Inferred Resources has increased confidence in the resource and is supporting ongoing successful mining.

  • Cuffley Lode - New, widely spaced drill intercepts have confirmed partial southward and depth extension of Cuffley mineralization toward previously reported high-grade intercepts approximately 100 m south of and approximately 150 m below the previous limit of Inferred Mineral Resources.  Closely spaced infill drilling of two panels within the Cuffley Inferred Resource has established short-range continuity of the mineralization.

  • W-Lode - Infill drilling and development sampling in the area of previously Inferred Mineral Resource has increased confidence in the minability of W-Lode. Capital development to the 860 m level continues. A new vein intercept approximately 150 m below the previous limits of drilling, though itself of low-grade, suggests further exploration potential at depth.

These new drill results will be incorporated in an independent NI 43-101 compliant technical report updating Mineral Resources and Reserves, planned for release in the first quarter of 2013.

Brad Mills, CEO of Mandalay, commented, "We continue to achieve significant exploration success at Costerfield. In extending the drilled areas of high-grade gold and antimony mineralization in the N-Lode to the north and Cuffley to the south, we have not only demonstrated the potential for a larger resource than previously estimated, but also shown at least 300 m of strike length overlap of the two veins.  This new geometry requires careful reconsideration of capital development and mine design for Costerfield, which we expect will ultimately support significant improvements in the amount, timing, and rate of mill feed relative to previous concepts. Given this rapidly changing picture, we have postponed completion of the Preliminary Economic Analysis on the Cuffley project.  We will incorporate all of the currently reported drilling, plus further infill and extension drilling planned on Cuffley over the next two quarters, into a capital development plan and decision by mid-year 2013, accompanied by a determination of the optimum mining and processing rate."

Costerfield drilling, sampling, and assaying

During the second half of 2012, Mandalay drilled 11,712 m in 50 holes for a total investment of approximately US$2.3 million. In addition, the Company completed 2,726 m of on-vein operating development and associated sampling of the E-, W- and N-Lodes in the Augusta mine.

Drill core was logged and sampled by Costerfield geologists, who also performed mine sampling of the development advances.  All samples were sent to Onsite Labs in Bendigo, Victoria, Australia, for sample preparation and assay. Site geological and metallurgical personnel have implemented a QA/QC process that includes the regular submission of standard reference materials and blanks with drill and face samples submitted for assay. Standard reference materials have been certified by Geostats Pty Ltd. (see March 2012 technical report entitled "Mandalay Resources Corporation: Costerfield (Augusta) Gold-Antimony Mine: Mineral Resource and Mineral Reserve Estimate", available on SEDAR (www.sedar.com), which contains a complete description of drilling, sampling, and assaying procedures.)

Costerfield drill results

For the locations of the N-Lode, Cuffley Lode, and W-Lode, click here for Figure 1.

N-Lode

Drilling results for N-Lode appear in Table 1.  Click here for Figure 2, which displays drill results and mine sampling results in long section.

Table 1:  N-Lode drill results

Hole
ID
Hole
Completion
Depth
(m)
Hole
Completion
Date
Intercept
Northing
(Mine Grid)
(m)
Intercept
Easting
(Mine Grid)
(m)
RL
(Mine Grid)
(m)
*True
Width
(m)
Gold
Grade
(g/t)
Antimony
Grade
(%)
MH258 196.3 26/Mar/12 4487 15318 884 0.93 18.0 5.1
MH259 195.4 3/Apr/12 4367.6 15285.2 916.9 0.55 3.5 0.3
MH261 185.5 23/May/12 4458 15305 911 0.12 70.2 0.2
MH262 272.5 4/Jun/12 4404.5 15302.0 889.2 0.08 1.6 4.3
MH263 225.2 7/Jun/12 4451.0 15305.8 870.6 0.60 0.5 0.0
MH264 143.3 2/Jul/12 4582.5 15318.5 1028.9 0.74 15.2 15.2
MH265 147.4 5/Jul/12 4601.8 15316.7 995.5 2.72 13.3 6.7
MH266 141.1 10/Jul/12 4622.5 15324.8 1018.4 0.10 27.5 15.3
MH267 230.7 16/Jul/12 4563.1 15298.4 873.6 0.92 28.8 23.9
MH268 162.8 14/Jun/12 4560.3 15310.4 977.0 0.36 27.4 2.5
MH269 157.2 20/Jun/12 4563.7 15299.6 937.3 1.14 11.4 1.3
MH270 210.0 26/Jun/12 4559.9 15300.2 902.3 0.92 25.7 14.7
MH274 150.2 18/Jul/12 4616.2 15298.1 967.8 0.04 13.8 6.5
MH275 190.1 30/Jul/12 4615.0 15295.2 918.3 0.37 37.9 27.9
MH276 199.2 2/Aug/12 4611.5 15302.5 880.1 0.73 3.1 0.8
MH273 332.0 8/Aug/12 4612.8 15312.8 1065.2 0.07 1.1 2.0
AD027 327.7 21/Jun/12 4697.8 15335.9 1003.1 0.13 56.1 36.7
AD028 380.5 16/Jul/12 4730.9 15334.8 927.9 0.76 4.5 4.6
AD024 471.0 20/Aug/12 4847.0 15367.0 1109.0 0.43 3.3 1.1
MH298 168.3 17/Oct/12 4530.1 15303.9 960.8 0.47 150.10 30.90
MH299 171.4 22/Oct/12 4533.0 15303.4 929.4 0.28 181.90 0.97
MH300 187.8 24/Oct/12 4539.0 15305.9 900.9 0.19 8.28 6.80
MH314 189.2 12/Nov/12 4656.9 15342.5 1037.4 0.14 82.70 39.90
MH315 207.4 15/Nov/12 4660.5 15312.0 964.7 0.19 32.60 30.00
MH316 222.1 21/Nov/12 4658.9 15302.9 904.9 0.09 46.30 20.50
MH317 261.3 26/Nov/12 Assays Not Yet Received
MH318 285.3 28/Nov/12 Assays Not Yet Received
MB017 261.1 5/Oct/12 4785.8 15356.3 1046.4 0.26 13.8 16.0
MB018 402.3 30/Oct/12 4783.4 15342.8 942.5 0.05 7.78 4.79
MB020 256.8 15/Oct/12 4941.9 15365.7 1047.1 0.14 3.97 1.47
MB021 359.3 1/Nov/12 4936.4 15362.0 976.5 0.10 5.44 10.30
MB022
W2
353.5 3/Dec/12 4941.9 15358.3 891.2 0.08 31.5 0.48

*True width is a preliminary estimate only and may not reflect final true width used in resource estimate

On N-Lode, widely spaced drilling has generated multiple high-grade intercepts spanning the 300 m north-south gap between the limits of previously Inferred Resources (announced on July 9, 2012) and a high-grade intercept previously reported on the vein at approximately 4850 Northing.  The northern limit of N-Lode mineralization is currently understood to be represented by the vertical line of low-grade intercepts in MB020, MB021 and MB022 at approximately 4950 Northing.

In addition, closely spaced drilling and mine sampling at the southern end of N-Lode confirms and fills in the previous Inferred Resource.

With these reported results, the Company expects its 2012 Mineral Resource and Reserve estimate will include a significant increase in Inferred and Indicated Mineral Resources in N-Lode.

Cuffley Lode

Drilling results for Cuffley Lode appear in Table 2.  Click here for Figure 3, which displays drill results in long section.

Table 2:  Cuffley Lode drill results

Hole ID Hole
Completion
Depth
(m)
Hole
Completion
Date
Intercept
Northing
(Mine Grid)
(m)
Intercept
Easting
(Mine Grid)
(m)
RL
(Mine Grid)
(m)
*True
Width
(m)
Gold
Grade
(g/t)
Antimony
Grade
(%)
AD021 436.3 4/Jun/12 4604.9 15135.1 910.8 1.96 1.34 0.52
AD023W1 369.3 5/Jul/12 4763.5 15159.9 924.2 0.77 90.84 10.14
AD024 471.0 20/Aug/12 4851.2 15193.3 842.2 0.16 59.80 0.08
AD025 432.0 25/Jul/12 4768.0 15183.1 838.1 0.59 11.17 26.94
AD027 327.7 21/Jun/12 4738.0 15230.9 1102.6 0.25 8.45 6.70
AD028 380.5 13/Jul/12 4757.6 15224.6 1071.9 0.11 5.34 0.01
AD029 315.9 6/Sep/12 4856.1 15172.2 935.1 0.46 0.06 0.00
AD033 296.2 20/Sep/12 4945.7 15176.3 964.8 0.90 5.70 1.69
AD035 334.8 1/Aug/12 4994.8 15187.2 946.4 0.05 1.08 18.50
AD036 335.0 16/Aug/12 5032.6 15194.5 955.8 0.22 138.10 24.80
AD037 326.3 4/Sep/12 5048.1 15195.9 933.0 0.45 78.31 35.04
AD038 300.8 2/Oct/12 5068.2 15190.7 966.2 1.84 80.99 16.15
MH282 239.2 31/Oct/12 4493.4 15131.4 942.5 0.11 0.03 0.00
MH283 252.2 5/Nov/12 4494.4 15128.2 860.9 0.70 7.42 0.01

*True width is a preliminary estimate only and may not reflect final true width used in resource estimate

Holes AD021, AD023, AD024 and AD025 tested the Cuffley Lode toward two previously reported mineralized intercepts - one approximately 100 m south of, and the other approximately 150 m below, the previous limits of Inferred Resources. Encouraging results in these holes suggest that more drilling in this area, planned for the first half of 2013, will eventually delineate a significantly expanded resource, although only a modest increase is expected in the end-of-2012 estimation.

MH282 and MH283 are low-grade intercepts along the 4500 Northing. They may serve to bound the southern limit of Cuffley mineralization.

Holes AD033, AD035, AD036, AD037 and AD038 commenced closely spaced infill drilling on two mining panels to gain early confidence in continuity of grade and geology within the existing Cuffley Inferred Resource. Figure 3 shows that results were generally consistent with previous, widely spaced drilling.

W-Lode

Drilling results for W-Lode appear in Table 3.  Click here for Figure 4, which displays drill results and mine sampling results in long section.

MH 279, MH 280, MH 281 and MH284 were step-out holes designed to test extension of W-Lode at depth. The last of these, MH284, intersected W-Lode 130 m below the previous deepest intercept. It contains weakly mineralized vein material, which is interpreted to represent W- and/or N-Lodes offset by a possible low-angle fault. Future drilling to probe for high-grade segments below this fault is planned in 2013.

MH 258 through MH 263 were infill holes. These, in conjunction with geologic interpretations from underground mapping and sampling, increase confidence in the resource and provide support for optimized mining.

Table 3: W-Lode drill results

Hole ID Hole
Completion
Depth
(m)
Hole
Completion
Date
Intercept
Northing
(Mine Grid)
(m)
Intercept
Easting
(Mine Grid)
(m)
RL
(Mine Grid)
(m)
*True
Width
(m)
Gold
Grade
(g/t)
Antimony
Grade
(%)
MH258 196.3 26/Mar/12 4487.4 15318.0 883.9 0.42 47.5 12.8
MH259 195.4 3/Apr/12 4360.8 15302.1 924.9 0.18 9.0 4.7
MH261 185.5 23/May/12 4457.8 15307.9 912.7 0.10 1.2 7.3
MH262 272.5 4/Jun/12 4408.7 15309.5 895.2 0.19 4.4 3.4
MH263 225.2 7/Jun/12 4453.4 15318.1 882.6 0.14 11.4 18.7
MH279 338.6 6/Sep/12 4259.3 15273.4 902.0 0.47 9.48 0.00
MH280W1 130.5 12/Oct/12 4273.3 15283.8 935.7 1.54 7.41 1.18
MH284 387 10/Oct/12 4481.546 15252.56 698.247 0.19 0.25 0.07
MH281 184.9 26/Sep/12 No Significant Intersection

*True width is a preliminary estimate only and may not reflect final true width used in resource estimate

Qualified Person:

Chris Gregory, General Manager of Australasian Corporate Development and Exploration for Mandalay Resources, a Member of Australian Institute of Geoscientists (AIG) and a Qualified Person as defined by NI 43-101. He has reviewed and approved the technical and scientific information contained in this release.

About Mandalay Resources Corporation:

Mandalay Resources is a Canadian-based natural resource company with producing assets in Australia and producing and exploration projects in Chile. The Company is focused on executing a roll-up strategy, creating critical mass by aggregating advanced or in-production gold, copper, silver and antimony projects in Australia and the Americas to generate near-term cash flow and shareholder value.

Forward-Looking Statements:

This news release contains "forward-looking statements" within the meaning of applicable securities laws, including statements regarding the Company's mineral Resources, mineral Reserves, the timing of an updated technical report for Costerfield, the Company's expectation of significant increases in mineral Resources and Reserves at Costerfield, anticipated changes to the Costerfield life of mine production estimates and the Company's planned 2013 exploration program. Readers are cautioned not to place undue reliance on forward-looking statements. Actual results and developments may differ materially from those contemplated by these statements depending on, among other things, changes in commodity prices and general market and economic conditions. The factors identified above are not intended to represent a complete list of the factors that could affect Mandalay. A description of additional risks that could result in actual results and developments differing from those contemplated by forward-looking statements in this news release can be found under the heading "Risk Factors" in Mandalay's annual information form dated March 30, 2012, a copy of which is available under Mandalay's profile at www.sedar.com. In addition, there can be no assurance that any current or future Inferred Resources that are discovered as a result of additional drilling will ever be upgraded to Proven or Probable Reserves.  Although Mandalay has attempted to identify important factors that could cause actual actions, events or results to differ materially from those described in forward-looking statements, there may be other factors that cause actions, events or results not to be as anticipated, estimated or intended. There can be no assurance that forward-looking statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements.

SOURCE Mandalay Resources Corporation

PDF available at: http://stream1.newswire.ca/media/2013/01/07/20130107_C4214_DOC_EN_22298.pdf

PDF available at: http://stream1.newswire.ca/media/2013/01/07/20130107_C4214_DOC_EN_22299.pdf

PDF available at: http://stream1.newswire.ca/media/2013/01/07/20130107_C4214_DOC_EN_22300.pdf

PDF available at: http://stream1.newswire.ca/media/2013/01/07/20130107_C4214_DOC_EN_22301.pdf



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