Double Magic Ni-Cu Project - Interim Exploration Update
Released
Released
Announcement PDF
21st September 2015
ASX Release
DOUBLE MAGIC NI-CU PROJECT – INTERIM EXPLORATION UPDATE
An additional 316 metres of RC drilling has been completed in three
holes, drilling ongoing
Step out hole DMRC0019 at Conductor D intersected 10 metres of
visible strong nickel and copper sulphide mineralisation from 47m
down hole, including 5m of visible massive and matrix sulphides
from 48m. This intersection in DMRC0019 is approximately 15 metres
west of that in discovery hole DMRC0003
DMRC0020 testing the same zone 30 metres to the south-east
returned minor sulphides
RC and diamond core drilling is continuing
Heli-borne VTEMmax survey commencing today
Laboratory assay are pending
Buxton Resources Limited (ASX: BUX & BUXO) advises that the Phase 2 drilling
program and associated exploration programs at the Double Magic Ni-Cu Project
(location in Figure 4) are progressing well.
Drilling Update
A further 316 metres of RC drilling in 3 holes (DMRC0018, 19 and 20) has been
completed since Buxton’s last ASX announcement on 18th September 2015.
Ongoing Phase 2 drilling has been designed to test the geometry and down-plunge
extensions of the Conductor D mineralisation intersected in previously reported
DMRC0003 (which intersected 17m (down hole) of massive and matrix sulphide grading
1.78% Ni & 1.16% Cu from 46 metres, including 8m @ 3.05% Ni & 1.87% Cu from 50
metres), as well as following up on existing and several new geophysical targets.
Buxton provides this drilling update based on visual assessment and notes no assay
results for Phase 2 drilling have yet been received from the laboratory. The company
also reminds readers that mineralised intercepts reported are not to be considered as
true thickness.
Conductor D
Step out hole DMRC0019 was collared approximately 35m south-west of DMRC0003,
inclined at -75o towards the north-east, designed to test for strike extensions of the
previously reported mineralised intercepts in DMRC0003 and DMRC0016. The
following visual observations were recorded:
DMRC0019 intersected 10 metres of nickel and copper sulphide mineralisation as
follows:
5 metres of massive and matrix sulphides from 48 metres (see chip-tray photo
below), within a broader zone of;
10 metres of disseminated sulphides from 47 metres down hole
PO Box 9028
Subiaco WA 6008
Suite 1, First Floor
14-16 Rowland Street
Subiaco WA 6008
Tel: 08-9380 6063
Fax: 08-9381 4056
www.buxtonresources.com.au
info@buxtonresources.com.au
DMRC0020 was drilled 30 metres south-east of DMRC0003 at -80o inclination towards
the north-east, and returned only minor visible sulphide mineralisation from 52-54
metres down-hole.
See Figure 1 below for a cross-section of the Conductor D area, Figure 2 for a plan of
the same area, and Table 1 at the end of this document for a full list of all drillholes
completed by Buxton to date.
Figure 1 – Conductor D Cross-section (bearing 040) showing drillholes with visual sulphide estimates,
Ni/Cu assays where available, and interpreted geology.
Figure 2 – Conductor D plan view, showing drill hole collars & traces, interpreted geology, and the location
of Conductor D cross-section line with envelope widths (shown as Figure 1).
Conductor I
Hole DMRC0018 was drilled to test this new target generated by the large fixed loop
TEM survey. Encouragingly, it intersected modest visual sulphides from 143 to 146
metres down-hole. Conductor I is located about 600 metres south of Conductor D,
location previously indicated on Figure 3 of the exploration update released 18th
September.
Table 1 – Buxton’s completed drilling at Double Magic. Coordinates are MGA Zone 51 (GDA94)
Figure 4. Location of the Double Magic Ni-Cu Project in Western Australia. Also shown is the location of
Panoramic’s Savannah Ni-Cu Mine.
For further information regarding Buxton Resources Limited please contact:
Sam Wright
Company Secretary
sam@buxtonresources.com.au
Competent Person
The information in this report that relates to Exploration Results is based on information compiled by Mr Rolf Forster,
Member of the Australasian Institute of Mining and Metallurgy, and Mr Derek Marshall, Member of the Australian
Institute of Geoscientists. Mr Forster is an Independent Consultant to Buxton Resources Limited and Mr Marshall is
a full-time employee. Mr Forster and Mr Marshall have sufficient experience which is relevant to the activity being
undertaken to qualify as a “Competent Person”, as defined in the 2012 edition of the Joint Ore Reserves Committee
(JORC) Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves. Mr Forster
and Mr Marshall consent to the inclusion in this report of the matters based on the information in the form and context
in which it appears.
JORC Table: Section 1 – Sampling Techniques and Data
Criteria
JORC Code explanation
Commentary
Sampling techniques
Nature and quality of sampling (eg cut channels, random
chips, or specific specialised industry standard
measurement tools appropriate to the minerals under
investigation, such as down-hole gamma sondes, or
handheld XRF instruments, etc). These examples should
not be taken as limiting the broad meaning of sampling.
Include reference to measures taken to ensure sample
representivity and the appropriate calibration of any
measurement tools or systems used.
Aspects of the determination of mineralisation that are
Material to the Public Report. In cases where ‘industry
standard’ work has been done this would be relatively
simple (eg ‘reverse circulation drilling was used to obtain
1 m samples from which 3 kg was pulverised to produce a
30 g charge for fire assay’). In other cases more
explanation may be required, such as where there is
coarse gold that has inherent sampling problems.
Unusual commodities or mineralisation types (eg
submarine nodules) may warrant disclosure of detailed
information.
Drill type (eg core, reverse circulation, open-hole
hammer, rotary air blast, auger, Bangka, sonic, etc) and
details (eg core diameter, triple or standard tube, depth
of diamond tails, face-sampling bit or other type, whether
core is oriented and if so, by what method, etc).
Early stage exploration drilling at the Double Magic
project has been undertaken utilizing a Reverse
Circulation (RC) rig.
Method of recording and assessing core and chip sample
recoveries and results assessed.
Measures taken to maximise sample recovery and ensure
representative nature of the samples.
The RC bulk sample recovery is routinely examined for
representivity. It is not believed that any bias has
occurred due to loss or gain of sample.
Drilling techniques
Drill sample recovery
The drillhole locations are picked up by handheld GPS.
Sampling was carried out under Buxton protocols and
QAQC procedures are per industry best practice.
RC drilling was employed to generate 1m samples. A rig
mounted cyclone and cone splitter was used to provide a
bulk sample and a representative split sample for assay.
Either the 1m split or a composite (hand speared)
sample was collected for assay purposes.
Samples are submitted to Intertek Genalysis in Perth for
analysis. A standard dry, crush and pulverize was
followed by a 25g charge for fire assay with an ICP-MS
finish for Au, Pt, Pd and a four-acid digestion finished
with ICP-OES for a suite of 33 elements.
WBH Drilling has completed a total of 11 holes for
1208m of RC drilling at the Double Magic Project, during
the Phase 2 drill program. Drilling continues at the date
of this release.
Whether a relationship exists between sample recovery
and grade and whether sample bias may have occurred
due to preferential loss/gain of fine/coarse material.
Logging
Whether core and chip samples have been geologically
and geotechnically logged to a level of detail to support
appropriate Mineral Resource estimation, mining studies
and metallurgical studies.
Whether logging is qualitative or quantitative in nature.
Core (or costean, channel, etc) photography.
The total length and percentage of the relevant
intersections logged.
100% of the drill holes are geologically logged in real
time by qualified and experienced geologists, recording
relevant data to a set template. All logging included
lithological features, mineral assemblages and estimated
mineralization percentages. All data was codified to a set
of company code systems. All chips are photographed.
Sub-sampling
techniques and
sample preparation
If core, whether cut or sawn and whether quarter, half or
all core taken.
If non-core, whether riffled, tube sampled, rotary split,
etc and whether sampled wet or dry.
All 1m intervals were split with a rig mounted cone
splitter. Less mineralised analysis samples were prepared
as multiple metre (generally 4m composites) spear
samples. Sample preparation is consistent with industry
best practice. Field QC procedures involved the use of
certified reference material assay standards, blanks and
duplicates for company QC measures, and laboratory
standards, replicate assaying and barren washes for
laboratory QC measures. The insertion rate of each of
these QAQC measures averaged 1:20. The sample size is
deemed appropriate for the material and analysis
method.
For all sample types, the nature, quality and
appropriateness of the sample preparation technique.
Quality control procedures adopted for all sub-sampling
stages to maximise representivity of samples.
Measures taken to ensure that the sampling is
representative of the in situ material collected, including
for instance results for field duplicate/second-half
sampling.
Whether sample sizes are appropriate to the grain size of
the material being sampled.
Quality of assay data
and laboratory tests
The nature, quality and appropriateness of the assaying
and laboratory procedures used and whether the
technique is considered partial or total.
The samples were analysed at Intertek Genalysis in
Perth, Australia. Sample preparation included drying,
crushing, splitting and pulverizing. A four acid digest
followed by a 33 element ICP analysis was conducted on
all samples. The samples were also analysed by Fire
Assay with an ICP finish for Au, Pt and Pd. The laboratory
procedures are considered to be appropriate for
reporting according to industry best practice.
Verification of
sampling and
assaying
Location of data
points
For geophysical tools, spectrometers, handheld XRF
instruments, etc, the parameters used in determining the
analysis including instrument make and model, reading
times, calibrations factors applied and their derivation,
etc.
Nature of quality control procedures adopted (eg
standards, blanks, duplicates, external laboratory checks)
and whether acceptable levels of accuracy (ie lack of bias)
and precision have been established.
Not applicable.
The verification of significant intersections by either
independent or alternative company personnel.
Significant mineralization has been verified by
alternative company personnel.
The use of twinned holes.
There have been no twinned holes due to the early stage
nature of this exploration program.
Documentation of primary data, data entry procedures,
data verification, data storage (physical and electronic)
protocols.
All data is collected initially on paper and handheld GPS.
This data is hand entered to spread sheets and validated
by Company geologists. This data is then imported and
validated using MapInfo software. Physical data sheets
are stored at the company office. Digital data is securely
archived on and off-site.
No adjustments to assay data have been made.
Handheld GPS (+/-5m) as well as reference to
topographical and remote sensing data. Additionally,
closely spaced drill hole collars have been measured on
the ground with tape and sighting compass as a check.
MGA51 (GDA94).
Topographic elevation was recorded via handheld GPS
and checked against remote sensing data, this is deemed
sufficient for this stage of exploration.
Drill holes are based on geophysical targets and not
equally spaced. Samples from DMRC003 were taken as
1m splits for the entire hole.
Discuss any adjustment to assay data.
Accuracy and quality of surveys used to locate drill holes
(collar and down-hole surveys), trenches, mine workings
and other locations used in Mineral Resource estimation.
Specification of the grid system used.
Quality and adequacy of topographic control.
Data spacing and
distribution
Orientation of data in
relation to geological
structure
Sample security
Audits or reviews
Data spacing for reporting of Exploration Results.
Whether the data spacing and distribution is sufficient to
establish the degree of geological and grade continuity
appropriate for the Mineral Resource and Ore Reserve
estimation procedure(s) and classifications applied.
Whether sample compositing has been applied.
Whether the orientation of sampling achieves unbiased
sampling of possible structures and the extent to which
this is known, considering the deposit type.
If the relationship between the drilling orientation and
the orientation of key mineralised structures is considered
to have introduced a sampling bias, this should be
assessed and reported if material.
The measures taken to ensure sample security.
The results of any audits or reviews of sampling
techniques and data.
The results of the laboratory-inserted standards, blanks
and sample repeats demonstrate the accuracy and
precision of methods employed.
Not applicable – No Mineral Resource or Ore Reserve
calculations have been performed.
Due to the early stage of investigation and the nature of
drilling (RC chips) it is not possible to determine the
amount of bias due to the relationship between drilling
orientation and orientation of mineralization.
All mineralized intervals are down hole intervals, not
true width.
Samples were packaged and stored in secure storage
from the time of gathering through to submission.
Laboratory best practice methods were employed by the
laboratory upon receipt. Returned pulps will be stored at
a secure company warehouse.
No audits of the sampling techniques or data were
carried out due to the early stage of exploration. It is
considered by the Company that industry best practice
methods have been employed at all stages of the
exploration.
Section 2 – Reporting of Exploration Results
Criteria
JORC Code explanation
Commentary
Mineral tenement and
land tenure status
Type, reference name/number, location and ownership
including agreements or material issues with third parties
such as joint ventures, partnerships, overriding royalties,
native title interests, historical sites, wilderness or
national park and environmental settings.
The Double Magic Project is located in the Kimberley
region of Western Australia and consists of four
exploration licences (E04/1533, E04/2142, E04/2026 &
E04/2060) held by Alexander Creek Pty Ltd. Alexander
Creek Pty Ltd is a wholly (100%) owned subsidiary of
Buxton Resources Limited.
The tenements are in good standing with the DMP and
there are no known impediments for exploration on
these tenements.
The security of the tenure held at the time of reporting
along with any known impediments to obtaining a licence
to operate in the area.
Exploration done by
other parties
Acknowledgment and appraisal of exploration by other
parties.
Geology
Deposit type, geological setting and style of
mineralisation.
Drill hole Information
A summary of all information material to the
understanding of the exploration results including a
tabulation of the following information for all Material
drill holes:
Data used during the appraisal of the Double Magic
Project (previously known as the Alexander Creek
Project, Clara Hills, Jack’s Hill, Limestone Springs &
Maura’s Reward) has been collected by numerous
exploration parties, including Alexander Creek Pty Ltd,
Victory Mines Limited (ASX:VIC), Proto Resources and
Investments Limited (ASX:PRW), and Ram Resources
Limited (ASX:RMR). All geophysical data has been
independently reviewed by Southern Geoscience
Consultants. All historical data presented has been
previously reported under JORC 2004 and there has
been no material change (see Competent Persons
Statement for details of original reports).
The Project area lies within the Palaeoproterozoic
Hooper Province of the King Leopold Orogen in the
Kimberley region of Western Australia. The geology of
the Project is characterized by mica schists of the
Marboo Formation which are intruded by thick sills of
the Ruins Dolerite. The Ruins Dolerite is a medium- to
fine-grained mafic-ultramafic intrusive that is host to
the known nickel-copper sulphide mineralization. This
mineralization is interpreted to represent primary
orthomagmatic sulphide mineralization, however there
appears to be significant re-working and alteration of
the mineralization in places (in particular at the Jack’s
Hill Gossan where the mineralization is dominated by
copper carbonates and contains limited nickel).
Importantly the gossan at Jack’s Hill does not have an
electromagnetic (EM) signature, whereas the EM
targets tested to date all appear to be due to nickel and
copper enriched sulphide mineralization.
See Table 1 in body of release.
o easting and northing of the drill hole collar
o elevation or RL (Reduced Level – elevation above sea
level in metres) of the drill hole collar
o dip and azimuth of the hole
o down hole length and interception depth
Data aggregation
methods
Relationship between
mineralisation widths
and intercept lengths
Diagrams
o hole length
If the exclusion of this information is justified on the basis
that the information is not Material and this exclusion
does not detract from the understanding of the report,
the Competent Person should clearly explain why this is
the case.
In reporting Exploration Results, weighting averaging
techniques, maximum and/or minimum grade truncations
(eg cutting of high grades) and cut-off grades are usually
Material and should be stated.
Where aggregate intercepts incorporate short lengths of
high grade results and longer lengths of low grade results,
the procedure used for such aggregation should be stated
and some typical examples of such aggregations should
be shown in detail.
The assumptions used for any reporting of metal
equivalent values should be clearly stated.
These relationships are particularly important in the
reporting of Exploration Results.
If the geometry of the mineralisation with respect to the
drill hole angle is known, its nature should be reported.
If it is not known and only the down hole lengths are
reported, there should be a clear statement to this effect
(eg ‘down hole length, true width not known’).
Appropriate maps and sections (with scales) and
tabulations of intercepts should be included for any
significant discovery being reported. These should include,
but not be limited to a plan view of drill hole collar
locations and appropriate sectional views.
No weighting, truncations, aggregates or metal
equivalents were used.
The relationship between the true mineralization width
and intercept length is not known at this early stage of
drilling, however true width of the intercept in
DMRC0003 is interpreted to be less than intercept
length.
Refer to figures/tables in body of release.
Balanced reporting
Where comprehensive reporting of all Exploration Results
is not practicable, representative reporting of both low
and high grades and/or widths should be practiced to
avoid misleading reporting of Exploration Results.
All currently available exploration results have been
reported.
Other substantive
exploration data
Other exploration data, if meaningful and material,
should be reported including (but not limited to):
geological observations; geophysical survey results;
geochemical survey results; bulk samples – size and
method of treatment; metallurgical test results; bulk
density, groundwater, geotechnical and rock
characteristics; potential deleterious or contaminating
substances.
The nature and scale of planned further work (eg tests for
lateral extensions or depth extensions or large-scale stepout drilling).
There is no other exploration data that is deemed to be
meaningful or material.
Diagrams clearly highlighting the areas of possible
extensions, including the main geological interpretations
and future drilling areas, provided this information is not
commercially sensitive.
See modelled conductors in Figures within the text of
this report. Additional zones of interest may be
established based on geological information (such as
drilling or downhole data). Regionally, the extensive
land package containing significant exposure of the
nickeliferous host lithology the Ruin’s Dolerite are of
exploration interest.
Further work
See text in body of release.
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