/NOT FOR DISTRIBUTION TO UNITED STATES WIRE SERVICES OR DISSEMINATION IN
THE UNITED STATES/
TORONTO, May 28, 2013 /CNW/ - Polar Star Mining Corporation (TSX: PSR) ("Polar Star" or the "Company") is pleased to announce the results of
its recent trenching program which has shown the existence of copper
mineralisation throughout the target area plus the identification of
two mineralised porphyry structures.
3,900 metres of trenching completed at the Melisa target within Polar
Star's 100% owned Montezuma exploration area
Mineralised porphyry identified in two locations within the Collapse
Zone at Melisa
Significant mineralisation identified within the Fault Elbow zone at
Melisa which showed 1.18% copper over 22 metres of trenching
Other trench areas within the Mina Negra and Haroldo zones at Melisa
returned significant results including an intersection of 14 metres at
0.93% copper and a separate vein recording 5.43% copper over 2 metres
Commencing in late 2012, Polar Star refocused its exploration program at
Montezuma. The structural interpretation of fault relationships,
detailed analysis of the previous drilling and the reprocessing of the
ground and airborne geophysics directed the program. Five new areas for
follow up exploration were identified. Melisa and Ignacia in the north
and Patricia, Dyana and Karina in the south-central section of the
Field observations confirmed that all five areas have the potential to
host copper porphyry deposits. After review Melisa was chosen as the
first area for immediate follow up based on:
Proximity to the Codelco Chuquicamata and Minstro Hales mines.
The size and intensity of the area of stock work
The significant concentration of artisanal copper oxide mining
The Melisa anomaly is a zone stock work, of collapsed structures and
copper and tourmaline veining covering an area of approximately 4km x
4km in the northeast sector of the Montezuma property.
The ongoing Niton spectrometer survey has outlined areas of coincident
copper, arsenic, bismuth and molybdenum values. A trenching program was
designed to test the anomalies outlined by geological mapping, the
Niton program, and the reinterpretation of the geophysics. 35 trenches
were completed totalling 3,900 metres. Polar Star has to date received
approximately 60% of the results back with the balance expected to be
received in the coming weeks.
As shown in the map in Appendix 1, three areas were initially targeted
in the western part of the stock work zone:
Mina Negra and Haroldo
Within the Mina Negra and Haroldo stock work areas, local artisanal
miners have historically worked the extensive vein systems. The
spectrometer and channel sample assays identified anomalous values for
copper, arsenic, molybdenum and bismuth over an area of 1km x 2km,
confirming that the stock work is mineralised across the whole zone.
The values include a 14 metres section grading at 0.93% copper and a
separate 2 metre section grading at 5.43%.
The Fault Elbow anomaly located 1 km south of Mina Negra is the result
of the interaction between N-S and NE-SW faulting. Artisanal vein
mining exploited not only copper but also lead and zinc from this area.
Grab samples taken from these vein sections include high copper values
of 4.05%, 4.87% and 6.25%. A sample taken from one of the lead / zinc
veins grades 2.54% Pb, 1.76% Zn and 49.9 ppm silver. Additionally,
seven trenches were cut in the central section of the Fault Elbow area
covering 22 metres. The average grade over this 22 metres of trenching
was 1.18% copper.
The focus of the exploration program has been in the Collapse Zone area.
This area is characterised by circular collapse structures and strong
hematite and tourmaline stock working. The ongoing Niton spectrometer
program, identified a 250m x 500m area in the west where coincident
high values for copper, arsenic and molybdenum occur. The first two
trenches in the area exposed mineralised porphyry structures. The main
exposure in Trench No1 is 6 metres wide and grades at 0.18% copper. The
presence of a chilled margin shows that this is the top of the system,
where leaching of the grade can occur. Ninety metres to the south, in
Trench No 2, is a second porphyry exposure one metre in diameter.
Sampling over the 10 metre long trench which includes this 1 metre
porphyry section returned an average grade of 0.89% copper.
Colin Bird, President and CEO stated:
"Our goal at Montezuma is to outline areas where the geological and
geophysical markers provide sufficient confidence to define future
exploration work and drill targets.
This exposure of mineralised porphyry, representing only a small section
of the area under investigation, has significantly increased the
possibility for the discovery of a world-class copper porphyry system.
Although we are in the early stage of our program, we are delighted
with the results, not only with the discovery of the porphyry but also
the existence of extensive copper mineralisation throughout the target
area. Our next step is to carry out ground geophysics and thereafter
drill the most prospective targets. Drilling is currently targeted for
third quarter 2013."
Sampling and Laboratory
Trench samples were sent to ALS Chemex, a fully accredited and certified
laboratory service. Samples were prepared at the ALS Chemex facility in
Chile, and assayed at ALS Chemex in Lima, Peru.
Colin Bird, is a qualified person under NI 43-101, and has reviewed and
approved the technical information contained in this press release.
About Polar Star Mining Corporation
Polar Star Mining Corporation ("PSR") is a TSX listed exploration and
development company with a focus on building shareholder value in
Chile. The Company's strategy is to use the cash flow from its' Chepica
mine (primarily gold) to fund, in part, the exploration program at its
flagship Montezuma property and to advance our large portfolio of other
world class projects in Chile through joint ventures.
President, Chief Executive Officer and Director
Image with caption: "Appendix 1: Montezuma - Melisa Stock work Zone (CNW Group/Polar Star Mining Corporation)". Image available at: http://photos.newswire.ca/images/download/20130528_C2783_PHOTO_EN_27177.jpg
SOURCE: Polar Star Mining Corporation
For further information:
Chief Operating Officer
Polar Star Mining Corporation.
Telephone: (540) 256-1444