Mansfield Minerals Inc.
TSX VENTURE : MDR

Mansfield Minerals Inc.

January 18, 2007 16:00 ET

Mansfield Minerals Inc.: Drilling Expands Lindero, NW Argentina

VANCOUVER, BRITISH COLUMBIA--(CCNMatthews - Jan. 18, 2007) - Mansfield Minerals Inc. (TSX VENTURE:MDR) (the "Company") has received assay results for an additional 12 diamond drill holes at its 100% owned Lindero property, bringing the total reported holes to 50. Management is pleased to report that the deposit remains open for expansion in several directions as new zones of "blind" (non-outcropping) mineralization have been encountered, significantly increasing the tonnage potential for the deposit.



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Hole No. From (m) To (m) Interval (m) Au g/t
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LDH-39 62.00 212.39 150.39 0.68
includes 84.00 148.00 64.00 0.80
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LDH-40 218.00 420.00 202.00 0.97
includes 242.00 334.00 92.00 1.28
and 248.00 290.00 42.00 1.81
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LDH-41 50.00 138.00 88.00 1.15
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LDH-42 14.00 114.00 100.00 0.96
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LDH-43 2.00 114.38 112.38 0.80
includes 76.00 92.00 16.00 1.19
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LDH-44 86.00 270.00 184.00 0.71
includes 148.00 170.00 22.00 1.01
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LDH-45 100.00 230.00 130.00 0.85
includes 112.00 164.00 52.00 1.15
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LDH-46 128.00 204.00 76.00 0.97
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LDH-47 158.00 300.00 142.00 1.06
includes 284.00 298.00 14.00 2.25
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LDH-48 1.22 166.00 164.78 0.76
includes 10.00 54.00 44.00 0.89
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LDH-49 148.00 252.00 104.00 0.75
includes 224.00 252.00 28.00 1.09
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LDH-50 34.00 136.00 102.00 1.10
includes 34.00 100.00 66.00 1.22
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Trench results reported in the Company's October 13, 2006 news release (0.98 g/t over 22 metres in the northwest body) have been undercut by LDH-50 which shows a substantial widening of the zone at depth. The intercept in LDH-50 is offset to the west 100 metres where LDH-48 also intersected a broad zone of mineralization at depth. In turn, LDH-47 steps out 250 metres southwest from LDH-48 and returned a 142 metre intercept of greater than one gram/tonne gold mineralization.

As a consequence of these intercepts, the southwest body and northwest body are now interpreted to be contiguous, with the previously recognized unmineralized core of the deposit occupying a much smaller volume than previously thought. The Company's geologists now believe that all the mineralized zones comprising the Lindero deposit are one contiguous body with the central barren core decreasing volumetrically with depth. Contained within the newly identified zones of mineralization are several higher grade feeder zones that have the potential for expansion. Assays for drill holes 51, 52 and 53 are pending. Extensions to the southwest body were indicated in drill holes LDH-40, LDH-41, LDH-42, LDH-44 and LDH-45. Drill holes LDH-47, LDH-48 and LDH-50 indicate that the northwest body is substantially larger than previous projections suggested.

A map of the drill hole locations has been posted on the Company's website and can be viewed at www.mansfieldminerals.com/s/Lindero.asp.

Security - Chain of Custody and Quality Control

Two metre lengths of HQ core samples were halved with a diamond saw and bagged at the field facility. The bags were tied with plastic color-coded security ties. Sample bags were then placed in shipping boxes and couriered by company vehicle to the Acme Analytical Laboratories S.A. prep lab in Mendoza, Argentina. The prepped samples were then shipped by Acme to their lab in Santiago, Chile where they were fire assayed for gold. The Company employs a Quality Control program consisting of re-assaying randomly selected coarse reject samples, insertion of coarse standard samples and blanks.

This news release has been reviewed by Gordon P. Leask, P.Eng., President of the Company, and a Qualified Person ("QP") as defined by National Instrument 43-101 (Standards of Disclosure for Mineral Projects).

About Mansfield Minerals Inc.

Mansfield is a mining exploration company which has focused its activities in northwestern Argentina since August 1994. The Company's current significant properties and projects consist of mineral rights covering approximately 260 square miles in three Argentine provinces and one Canadian province. The Company is currently focused on three primary projects which include Lindero (gold), Rio Grande (copper-gold) and La Frontera (silver-gold).

On behalf of the Board of Directors,

Gordon P. Leask, P.Eng., President

The TSX Venture Exchange does not accept responsibility for the adequacy or accuracy of this release.

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