Playfair Reports Initial Drill Results From Seal Lake
April 06 2011 - 7:30AM
Marketwired
Playfair Mining Ltd. (TSX VENTURE: PLY) is pleased to provide an
update of the ongoing drill program at its 100% owned copper-silver
Project at Seal Lake in Central Labrador. To date 20 holes,
totalling 3,430m metres have been completed; analyses have been
received for 10 of these holes. A total of 24 widely spaced holes
are planned for this winter 2011 drill phase.
Results have been received for the initial tendrillholes. All
ten drillholes intersected the favourable reduced Adeline Island
Formation rocks with cumulative thicknesses ranging from 40.1
metres in drillhole SL-11-06 to 4.65 metres in drillhole SL-11-08.
In addition to the results listed below, the seven remaining
drillholes all contain anomalous amounts of copper within the
favourable reduced rocks relative to the other sedimentary rocks in
the area.
These results provide support to Playfair's exploration theory
that the extensive copper-silver mineralization at Seal Lake is
syngenetic or diagenetic (that is formed at the same time as the
host rocks or shortly afterwards) and not epigenetic (that is
formed at a considerably later time than the host rocks). The
implication is that the copper silver mineralization occurs
throughout the Seal Lake basin and that considerable tonnage can
potentially be developed. Potentially economic copper and silver
grades were intersected in three of Playfair's drillholes.
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Drillhole From metres To metres Core Length metres Copper% Silver GPT
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SL-11-02 30.1 30.4 0.3 0.64 7.74
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and 34.1 34.6 0.5 3.07 26.50
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SL-11-08 18.0 18.5 0.5 2.40 24.90
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and 26.9 27.65 7.75 0.52 6.64
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and 38.3 39.0 0.70 1.22 6.51
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SL-11-10 90.6 98.5 7.90 1.76 56.2
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including 90.6 93.3 2.70 2.96 90.50
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Drillholes SL-11-02 and SL-11-08 were both drilled at Adeline
Island and drillhole SL-11-10 was drilled at the Ellis Prospect and
was designed to test the validity of the mineralization reported in
drillhole K-10 which was drilled in 1956 and had poor core
recoveries in places. A comparison of the two intersections is:
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Year Core Length Core Angle Estimated
Drillhole Drilled metres degrees True Width Copper% Gpt Ag
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SL-11-10 2011 7.90 80 7.8 1.76 56.2
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K10 1956 11.28 50 8.6 0.98 30.4
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The estimated true widths from the two drillholes are very
similar but the grade of both copper and silver is about 80% higher
in Playfair's 2011 drillhole. Drilling techniques have improved
considerably in the 55 year interval between the two drillholes, in
particular core recoveries are much better using wireline drilling
when compared to standard drilling. Core recovery was close to 100%
in Playfair's 2011 drillhole while core recovery in the 1956
drillhole K-10 was as low as 25% in some sections and averaged 85%.
These results suggest that some of the better grade mineralization
was not recovered in the previous drilling.
The Seal Lake Project covers 16,825 hectares in Central
Labrador. Some 136 copper and copper-silver occurrences including
16 copper-silver showings and 9 copper silver prospects, all
discovered mainly via prospecting in the 1950's, are known on the
property. Almost all the showings and prospects occur within a
consistent and laterally extensive stratigraphic interval - the
basal gray shale and adjacent quartzite of the Upper Adeline Island
Formation. The copper-silver enriched Adeline Island Formation is
believed to form a canoe shape, with the rock unit extending over
an estimated area measuring about 33km long by up to 4.4km wide.
Playfair's Seal Lake Copper Silver Project covers the entire mapped
extent of the favourable sedimentary unit and its probable
subsurface continuation.
Playfair believes the mineralization at Seal Lake is a reduced
facies sediment-hosted copper-silver mineralization of
Kuperschiefer-type. It is most closely analogous to the White Pine
deposit in Michigan, USA that is reported by the USGS to contain
688 million tonnes grading 1.2% copper and 40 gpt silver.
Playfair's current drill program was designed to test this
geological interpretation by drilling widely spaced holes in
several parts of the extensive property.The drill program is
ongoing and further results will be reported when available.
Tungsten Update
In addition to the Seal Lake copper-silver exploration
opportunity, Playfair has four properties with substantial
high-grade tungsten deposits. Playfair's four tungsten deposits
have all had significant work completed on them. Two of the
deposits (Risby and Grey River) have NI 43-101 compliant resource
estimates while the other two deposits (Lened and Clea) have
historical noncompliant NI43-101 resource calculations. Playfair
continues to believe that there is a strong case for an impending
global Tungsten shortage, as is evidenced by the continued strong
rebound in the price of Tungsten.
Tungsten has recently traded to an all-time high of $408 per
Metric Ton Unit of APT (or $18.51 per pound), an increase of more
than 50% over recent lows. Please see our website for an internet
link for the spot Tungsten price.
ON BEHALF OF THE BOARD
D. Neil Briggs, Director
Core samples were collected under the supervision of James
Harris, P.Geo. NQ diameter diamond core was descriptively logged on
site, aligned, marked for sampling and then cut in half,
longitudinally, using a rock saw. One-half of the core is preserved
on site in core boxes for verification and future reference. The
samples comprising the other half of the core were bagged, sealed
and delivered directly to ActLabs preparation facility in Happy
Valley- Goose Bay Labrador, they were dried, crushed and pulped.
Sample pulps were then delivered to ActLabs in Ancaster Ontario (an
ISO 17025 accredited facility). Samples were crushed to with up to
75% passing 2mm and split using a riffle splitter. An approximately
250 gram sub-sample split was pulverized using a ringmill to
approximately minus 150 mesh (105micron). A 0.5 gram split from the
resulting pulp was then subjected to an aqua regia digestions and a
multi-element ICP-MS analysis (code Ultratrace 1). Results with
copper greater than 5,000 ppm were subjected to a sodium peroxide
fusion digestion and ICP-OES analysis (code 8). Results with silver
greater than 30 ppm values were subjected to an analysis by fire
assay with a gravimetric finish (code 8-Ag). All coarse rejects and
pulps are currently stored at Actlabs Labrador. Assay standards and
blanks were inserted into sample shipments as a quality control
measure in addition to the internal quality control measures
applied by the laboratory.
Michael Moore, P.Geo, is the qualified person who has reviewed
the technical information contained in this news release on behalf
of the Company.
Forward-Looking Statements: This Playfair Mining Ltd.news
release may contain certain "forward-looking" statements and
information relating to Playfair which are based on the beliefs of
Playfair management, as well as assumptions made by and information
currently available to Playfair management. Such statements reflect
the current risks, uncertainties and assumptions related to certain
factors including, without limitations, exploration and development
risks, expenditure and financing requirements, title matters,
operating hazards, metal prices, political and economic factors,
competitive factors, general economic conditions, relationships
with vendors and strategic partners, governmental regulation and
supervision, seasonality, technological change, industry practices,
and one-time events. Should any one or more of these risks or
uncertainties materialize or change, or should any underlying
assumptions prove incorrect, actual results and forward-looking
statements may vary materially from those described herein.
www.playfairmining.com
Neither TSX Venture Exchange nor its Regulation Services
Provider (as that term is defined in the policies of the TSX
Venture Exchange) accepts responsibility for the adequacy or
accuracy of this release.
Contacts: Playfair Mining Ltd. D. Neil Briggs Director 604
687-7178 or Toll Free: 888-244-6644 604 687-7179 (FAX)
www.playfairmining.com
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