BMK report on Butler confirms Mungall's affirmation:Eagles Nest is komatiitic
posted on
Feb 09, 2011 11:42PM
NI 43-101 Update (September 2012): 11.1 Mt @ 1.68% Ni, 0.87% Cu, 0.89 gpt Pt and 3.09 gpt Pd and 0.18 gpt Au (Proven & Probable Reserves) / 8.9 Mt @ 1.10% Ni, 1.14% Cu, 1.16 gpt Pt and 3.49 gpt Pd and 0.30 gpt Au (Inferred Resource)
From Stockwatch News:
MacDonald Mines drills 10.85 m of 0.64% Cu at ButlerTicker Symbol:
C:BMK MacDonald Mines drills 10.85 m of 0.64% Cu at ButlerMacDonald
Mines Exploration Ltd (2)
(C:BMK)
Shares Issued 192,882,094Last Close
2/8/2011 $0.18Wednesday February 09 2011 - News Release
Mr. Brent Nykoliation reports
MACDONALD MINES PROVIDES EXPLORATION UPDATE: ANNOUNCES FORMATION OF
TECHNICAL ADVISORY COMMITTEE-HADYN BUTLER, B.SC., JAMES FRANKLIN, PH.D.,
AND LARRY HULBERT, PH.D.
MacDonald Mines Exploration Ltd. has released final assay results from its fall 2010
drill program and has provided a project update for its Butler and Hornby properties
located within the southern portion of the emerging Ring of Fire exploration play in
the James Bay Lowlands region of Northern Ontario.
Fall 2010 Exploration Program
The fall exploration program was comprised of 10 diamond drill holes (MN10-132
through MN10-141) drilled around previous targets delineated through bore-hole,
airborne and ground geophysics over the Butler Property, and 2 diamond drill holes
(HB10-01 and HB10-02) drilled over targets delineated through airborne and ground
geophysics over the Hornby Property. In total, 3,305 metres (2,775.3 m at Butler
and 530.1 m at Hornby) were drilled. In summary:
-- The Butler property holes were intended to extend the favourable
intersections from the previous drill program and also to confirm the
interpreted geologic model(s).
-- Two stratigraphic holes (MN10-139 & MN10-140) were drilled specifically
to confirm (successfully) the komatiite sequence north of Butler 3
-- Of the other 8 holes drilled on Butler, 2 were terminated before target
depth due to technical/mechanical reasons
-- Lithologic relogging of all diamond drill core was completed
-- Alteration identification and quantification has been completed
-- Whole rock lithogeochemical sampling was conducted over representative
drill core
-- Whole rock analysis indicates high grade vanadium pentoxide (V2O5) up to
1.57%
-- Whole rock analysis indicates anomalous PGE values
-- Technical advisory panel appointed
Vanadium Found Through Whole Rock Analysis
The vanadium mineralization was identified during the overall Butler property core
re-sampling program, which was specifically designed to identify and categorize
rock types. During the course of the re-logging program, 531 single point whole
rock lithogeochemical samples were collected to quantify the elemental signatures
associated with various rock types. During the analysis of these results, anomalous
vanadium pentoxide (V2O5) was identified in massive magnetite. The following
single point samples which identified vanadium mineralization are presented in
the table below:
----------------------------------------------------------------------------
Drill Hole Depth (m) V2O5(%)
----------------------------------------------------------------------------
MN07-49 37.6 1.57
MN07-49 62.1 1.39
MN07-49 66.5 1.14
MN10-110 18.25 1.02
MN10-110 141.35 1.15
----------------------------------------------------------------------------
The Company believes these anomalously high V2O5 results warrant further
exploration follow-up, since vanadium-bearing magnetite in the form of
ferrovanadium is used as a strengthener and hardener for high-strength
tool, and specialty steels.
Anomalous PGE Values Confirmed
During the course of the fall 2010 exploration program, a drill hole from
2008 with anomalous PGE's (platinum group elements) was re-examined.
This drill hole (MN08-56) returned assay values of 24 ppb Pt and
177 ppb Pd over a 3.5 metre interval, and upon examination was found
to contain very rare disseminated sulphides with the exception of a 5 mm
wide vein of pyrite and pyrrhotite cross-cutting the core at down-hole
depth of 66.15 m, and a 5 to 15 mm wide vein of predominantly pyrrhotite
cross-cutting the core at 68.0 m. The drill core was re-sampled at tighter
intervals, and submitted for PGE analysis. The 2010 analyses, along with
the original 2008 analysis, are presented in the table below:
----------------------------------------------------------------------------
Drill Hole Analysis From To Interval (m) Pt (ppb) Pd (ppb)
----------------------------------------------------------------------------
MN08-56 2008 66 69.5 3.5 24 177
MN08-56 2010 66.15 66.25 0.1 35 67
MN08-56 2010 68 68.15 0.15 128 946
MN08-56 2010 74 74.16 0.16 42 289
----------------------------------------------------------------------------
The presence of anomalous platinum and palladium concentrations over 3.5 m
and the elevated to high values associated with narrow sulphide enriched fractions
within the core indicate that any magmatic sulphide segregations on the property
should also be platinum and palladium rich similar to the nickel-copper (Ni-Cu)
sulphides from the Eagles Nest ore deposits.
Technical Advisory Committee Appointed
Based upon the promising results obtained to date, the Company believes that the
Butler Property has the potential to host significant Ni-Cu, VMS and V2O5
mineralization. To that end, the Company is pleased to announce the appointment
of Hadyn Butler, B.Sc., P.Geo, James Franklin, Ph.D, P.Geo and
Larry Hulbert, Ph.D, P.Geo., to the Technical Advisory Committee to oversee the
planning and advancement of future exploration programs.
Nickel Potential of Butler
Larry Hulbert, Ph.D, P.Geo. has been retained by the Company to review the
magmatic Ni-Cu-PGE potential of the Company's Properties. As part of this review,
Mr. Hulbert conducted a site visit in early October, 2010 in order to further the
geologic understanding of the mafic and ultramafic geology of the property, and
more importantly to examine the potential of the Property for hosting Ni-Cu-PGE
deposits.
Dr. Hulbert has over 38 years of extensive geological knowledge and expertise on
Ni-Cu-PGE mineralization, with 23 years as Senior Research Scientist specializing
in the Metallogeny of Mafic-Ultramafic Rocks and associated Ni-Cu-PGE mineralization
with the Geological Survey of Canada (GSC).
Dr. Hulbert identified ubiquitous highly differentiated gabbroic rocks on the property,
which he hypothesized could have been the 'heat source' for observed VMS
mineralization. Due to the gabbro's high level of differentiation, Dr. Hulbert also
determined that the underlying geology of the Property has the potential to host
significant chromium, iron, titanium and vanadium deposits.
Of significance to the Property's Ni potential, Mr. Hulbert also identified unequivocal
komatiites on the Property. Komatiites are extremely high temperature extrusive
rocks that can host significant magmatic Ni deposits (eg. Thompson Ni Belt, Manitoba;
Raglan, Quebec; Kambalda, Australia). According to Dr. Hulbert:
'One of the most striking observations was the abundance and widespread nature of
gabbroic rocks and their extreme degree of differentiation. Of equal if not more
importance was the recognition for the first time of komatiites. The presence of true
komatiites raises the Ni-Cu-PGE prospectivity of the property to a new level not
previously appreciated.'
Recently Mungall et. al presented a paper at the 11th International Platinum
Symposium entitled "The Eagle's Nest Komatiite-Hosted Ni-Cu-PGE Sulphide
Deposit in the James Bay Lowlands, Ontario" describing Noront Resources
Ltd.'s recent Ni-Cu-PGE discovery, and speculating on its komatiitic origin.
Although komatiites have yet to be discovered on the Noront property, the
discovery of true komatiites on the Butler Property not only confirms
Mungall et. al's hypothesis for the origin of the Eagle's nest Ni-Cu-PGE
sulphide deposit, but also increases the prospectivity for similar Ni-Cu-PGE
discoveries on the Butler Property.
VMS Expert Identifies Property Geology as Similar to Kidd Creek
James Franklin, Ph.D, P.Geo. has also been retained by the Company to review the
volcanogenic massive sulphide (VMS) potential of the Company's Properties. As part
of this review, Dr. Franklin conducted a site visit in mid-October to analyze drill core.
Dr. Franklin has over 40 years of extensive geological knowledge and expertise of
mineral deposits and regional metallogney. He serves as a Fellow of the Royal Society
of Canada, was past President of both the Geological Association of Canada and the
Society of Economic Geologists, has served as Chief Geoscientist of Earth Sciences
Sector for the GSC, and is an Adjunct Professor at Queen's University.
Based on examination of drill core, Dr. Franklin made the following observations:
'Overall, the Butler Lake area has most of the attributes of a high-T, copper-dominant
VMS system. The predominance of mafic and ultramafic sills represents a probable
heat source to 'drive' such a system. Most settings of this type contain a log-normally
distributed set of deposits, including one that should be greater than 20mt, and several
in the 3-6mt range. The area most closely resembles the Kidd Creek setting, except that
at Butler there seem to be at least 4 discrete hydrothermal centres.'
Assay Results
Partial assay results are presented in the table below:
----------------------------------------------------------------------------
Drill Hole From To Interval Cu Zn Pt Pd
(m) (m) (m) (%) (%) (ppb) (ppb)
----------------------------------------------------------------------------
MN10-132 234.7 245.22 10.52 0.327 0.363
MN10-133 392.36 397.33 6.04 0.177 3.43
Incl. 392.36 394.62 2.26 0.165 8.20
MN10-133 414.78 426.17 11.39 0.266 0.307
MN10-134 104.2 108 3.8 0.125 0.019 42.26 32.26
MN10-134 122.35 123.3 0.95 0.270 0.012 17.76 23.12
MN10-135 65 67 2 0.142 6.235
MN10-138 241.1 251.95 10.85 0.649 2.709
----------------------------------------------------------------------------
HB10-02 300.4 303.85 3.45 0.003 1.070
----------------------------------------------------------------------------
The Company drilled holes HB10-01 and HB10-02 to test for lithologies associated
with volcanogenic massive sulphide (VMS) mineralization. HB10-01 and HB10-02
intersected 167 metres and 230 metres respectively of intercalated and altered
mafic and quartz-eye-bearing felsic volcanics with disseminated and semi-massive
sulphides. This lithologic package verifies that the Hornby property is highly prospective
for VMS mineralization. The geophysical anomaly (electromagnetic) associated with this
package extends over 1 km in an east-west direction.
A complete summary table of all assay results from the 2010 drill program can found at:
http://www.macdonaldmines.com/images/stories/properties/butler_assays_feb2011.pdf.
Rigorous Scientific Approach Based on Expert's Recommendations
Based on recommendations from Hadyn Butler, Dr. Hulbert and Dr. Franklin, the Company
undertook a rigorous examination in November and December 2010 of diamond drill core
on the Property from areas deemed highly prospective for VMS and magmatic Ni-Cu-PGE
mineralization. This examination included the following:
-- Lithologic relogging of diamond drill core
-- Alteration mineral assemblage identification and quantification
-- Whole rock lithogeochemical sampling
Several geologists were involved in logging the diamond drill holes drilled on the
Property (25,560 m in 142 drill holes over a 6 year period). As a result, there were
discrepancies in lithologic identification. The purpose of the re-logging completed in
late 2010, was to establish consistent and correlatable lithologic coding to enable the
establishment of a stratigraphically constrained geologic model.
Kirk McKinnon, President and CEO comments: "MacDonald has worked hard and
tenaciously in its efforts to advance the James Bay Properties. Building upon the
broad foundation of historical drill holes, three generations of airborne geophysics,
ground geophysics and whole rock analysis the company has a solid foundation of
information required to direct its exploration. We believe based upon the analysis
of the Company's exploration team and the superb insights of our Technical Advisory
Committee that MacDonald is poised for discovery in 2011. I am especially gratified
that the entire exploration group has come together to manage the exploration
program and their involvement and commitment speaks to their belief regarding
the potential of the MacDonald properties. I would also like to take this opportunity
to announce that Quentin Yarie, P.Geo., will assume the role of Senior Vice President
of Exploration. Quentin will also join the MacDonald Mines Board of Directors replacing
Robin Chisholm. MacDonald Mines would like to sincerely thank Robin for his efforts and
tenure on the MacDonald Board."
Quentin Yarie, P.Geo., is the qualified person in regard to the technical data contained
within this news release and will be responsible for overseeing all aspects of the
Company's exploration programs.
We seek Safe Harbor.
� 2011 Canjex Publishing Ltd.