Mansfield Discovers Gold Copper Porphyry System
03 Febbraio 2011 - 7:02PM
Marketwired
Mansfield Minerals Inc. (the "Company") (TSX VENTURE: MDR) is
pleased to announce the discovery of a porphyry gold - copper gold
system while completing a 2,000 metre condemnation drill program on
its 100% owned Lindero gold project in Northwestern Argentina. The
Arizaro gold-copper porphyry is located 3 km southeast of the
Lindero gold deposit. Significant copper-gold mineralization was
encountered in five of the six holes that were drilled.
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Arizaro Drill Results
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Drill Hole # Interval Length Gold (g/t) Copper (%)
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ARD 3 10 - 34 m 24 m 0.70 0.36
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ARD 4 0 - 184 m 184 m 0.42 0.17
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ARD 5 0 - 268 m 268 m 0.38 0.17
incl. 84 - 246 m 162 m 0.50 0.16
incl. 110 - 154 m 44 m 0.93 0.28
incl. 130 - 148 m 18 m 1.44 0.36
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ARD 6 NSV NSV
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ARD 7 0 - 206 m 206 m 0.30 0.15
incl. 0 - 54 m 54 m 0.33 0.26
incl. 44 - 54 m 10 m 0.75 0.37
incl. 74 - 96 m 22 m 0.39 0.18
incl. 124 - 146 m 22 m 0.45 0.20
incl. 190 - 206 m 16 m 0.54 0.12
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ARD 8 24 - 36 m 12 m 0.64 0.24
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Arizaro Background
The Arizaro porphyry body was identified prior to the discovery
of the Lindero gold deposit in 1999. Management initially believed
that the surface alteration zone reflected a more deeply eroded
porphyry system with geologic similarities to the nearby Rio Grande
property. During a field traverse in late 2010, a well mineralized
copper-gold breccia fragment was discovered in an otherwise
un-mineralized fragmental body. The mineralized fragment was
interpreted to be sourced from a mineralized system at depth.
Discussion of Drill Results
Hole ARD-5 encountered an intercept of 162 metres grading 0.50
g/t gold and 0.16% copper with a sub-interval grading 0.93 g/t gold
and 0.28% copper over 44 metres. The higher grade interval is
believed to part of a higher grade feeder zone. The copper
mineralization identified in Hole ARD-7 is a mix of bornite and
chalcopyrite.
Given the proximity of Arizaro to Rio Grande, the Company will
continue to evaluate Arizaro with a minimum of 3,000 metres of
drilling to commence shortly.
Lindero Update
The Company is currently 80% complete on its bankable
feasibility study at Lindero. In early November 2010, the Company
submitted a global mining permit with the provincial mining
ministry which is progressing through the appropriate channels with
final approval expected in Q2/2011.
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).
ON BEHALF OF THE BOARD OF DIRECTORS,
Gordon P. Leask, P. Eng., President
Security - Chain of Custody and Quality Control
The Company has implemented a quality assurance (QA) and quality
control (QC) program to ensure the reliability of all
litho-geochemical sampling and analysis of both surface samples and
drill samples from all of its projects. All samples are shipped
directly to Alex Stewart International LLC, a certified laboratory
sample prep facility in Mendoza, in sealed bags with unique
Mansfield identification numbers. Analyses were executed using fire
assay and multi-element ICP. Samples are prepared and analyzed only
at internationally certified labs (e.g., international standards
ISO 9001:2000 and ISO 17025:1999), which control their data quality
with the use of reagent blanks, reference materials, and
replicates. All lab control results pertinent to the Company, such
as standards, blanks, and duplicates must be reported to Mansfield.
In addition, Mansfield independently inserts certified control
standards, coarse field blanks, sample checks and duplicates into
the sample stream to monitor data quality. These standards are
inserted "blindly" into the sample sequence and delivered to the
laboratory. Mansfield knows the values that should be determined
for these standard samples, but the laboratory does not, and the
standards act as an independent test of the laboratory's accuracy
of analysis. Mansfield inserts a minimum of 5% control samples in
all sample batches and 10% control samples for drilling samples.
The results of all data quality controls are carefully reviewed
prior to the public release of any data.
Cautionary Note to US Investors: This news release may contain
information about adjacent properties on which we have no right to
explore or mine. We advise U.S. Investors that the SEC's mining
guidelines strictly prohibit information of this type in documents
filed with the SEC. U.S. Investors are cautioned that mineral
deposits on adjacent properties are not indicative of mineral
deposits on our properties. This news release may contain
forward-looking statements including but not limited to comments
regarding the timing and content of upcoming work programs,
geological interpretations, receipt of property titles, potential
mineral recovery processes, etc. Forward-looking statements address
future events and conditions and therefore involve inherent risks
and uncertainties. Actual results may differ materially from those
currently anticipated in such statements.
The TSX Venture Exchange has not reviewed and does not accept
responsibility for the adequacy or the accuracy of this
release.
Contacts: Mansfield Minerals Inc. Gordon P. Leask President and
CEO (604) 681-4462 info@mansfieldminerals.com
www.mansfieldminerals.com
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