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CORE LITHIUM LTD Regulatory Filings 2016

Nov 23, 2016

64737_rns_2016-11-23_6c53215f-75cc-44fd-aa87-93b6f24bd15c.pdf

Regulatory Filings

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ASX ANNOUNCEMENT

ASX: CXO

24[th] November 2016

Thick High Grade Spodumene in all Diamond Core Holes

Drilled at Finniss Lithium Project

HIGHLIGHTS

  • Diamond core returned from the first diamond drilling at the Finniss Project has consistently hit thick intersections of high grade spodumene mineralisation in all drill holes at the Grants Prospect

  • Diamond drilling was following up high grade lithium discoveries from Core’s maiden RC drill program at Finniss, which included:

  • 34m @ 1.60% Li2O from 71m (FRC003) at BP33 Prospect

  • 49m @ 1.78% Li2O from 71m (FRC007) at Grants Prospect

  • 40m @ 1.66% Li2O from 58m (FRC018) at Grants Prospect

  • Initial observations indicate spodumene ore at Finniss displays good characteristics for potential concentrate processing

  • On the strength of the results, Core has doubled the size of the bulk sample of large diameter core transported to Nagrom laboratories for immediate metallurgical test work to assess potential to produce commercial grade spodumene concentrate

  • Como Engineers are managing metallurgical test work and will provide preliminary engineering advice on the Finniss Lithium Project in early 2017

  • Diamond Core assay results from both the Grants and BP33 prospects are expected in early December

  • 2 RC drill rigs currently drilling multiple targets at Finniss, with assay results expected through December and into early 2017

  • Spodumene Concentrate Metallurgical Test Work results expected in early 2017

  • Core fast-tracking activities at the Finniss Lithium Project to assess early development opportunities

A 26 Gray Court, Adelaide SA 5000 | T (08) 7324 2987 | E [email protected]

www.coreexploration.com.au

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Core Exploration Ltd (ASX: CXO) (“Core” or the “Company”) is pleased to announce that it has completed its maiden diamond drilling program at the Finniss Lithium Project near Darwin in the NT (“Finniss”). All holes drilled at the high grade Grants lithium pegmatite have hit thick intersections of excellent quality coarse grained spodumene that is potentially amenable to processing to produce commercial grade spodumene concentrate.

The green spodumene mineralisation at Grants makes up a substantial proportion of the entire pegmatite (Figure 1-3). Core anticipates strong lithium results from the assays from these diamond core holes in early December.

Initial observations of the Grants core show that high grade lithium (as spodumene) is consistently present as a major rock forming mineral throughout 40m-50m thick, fully-cored pegmatite drill intersections (Figure 1-3).

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Figure 1. Large green spodumene crystals making up a high proportion of pegmatite volume hosted by lighter coloured (white) feldspar and quartz.

74m – 77m FRDD001 (HQ), Grants Prospect, Finniss Lithium Project NT.

A 26 Gray Court, Adelaide SA 5000 | T (08) 7324 2987 | E [email protected]

www.coreexploration.com.au

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Figure 2. Large green spodumene crystals making up a high proportion of pegmatite volume hosted by lighter coloured (white) feldspar and quartz. 89m – 92m FRDD002 (HQ), Grants Prospect, Finniss Lithium Project NT.

On the basis of these excellent results, Core has doubled the size of the bulk sample and transported 400kg of large diameter HQ core for metallurgical test work at Nagrom metallurgical facilities in Perth, W.A, to determine potential to produce commercial grade spodumene concentrate with the test results expected in early 2017.

Core has also appointed specialist engineering consultants Como Engineers to manage the proposed metallurgical testwork and provide early engineering advice in respect of the Finniss Lithium Project. Como Engineers have an excellent track record with previous successful input to both Pilbara Minerals Ltd’s Pilgangoora Lithium Project and Galaxy Resources Ltd’s Mt Caitlin Lithium Project.

Core’s initial diamond core drilling is now complete with further assay results pending and likely to be released in December / January. Further diamond drilling may take place in 2017 to follow-up any further targets identified by Core’s Phase 2 exploration RC drilling which is currently underway at the Finniss Project.

A 26 Gray Court, Adelaide SA 5000 | T (08) 7324 2987 | E [email protected] www.coreexploration.com.au

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Figure 3. Large green spodumene crystals making up a high proportion of pegmatite volume hosted by lighter coloured (white) feldspar and quartz 73.8m – 87.1m FRDD003 (HQ) Grants Prospect, Finniss Lithium Project, NT.

Spodumene Pegmatite Mineralisation at Grants

Spodumene mineralisation is almost ubiquitous throughout the Grants pegmatite, and has been intersected consistently over 40m-50m in all three fully cored diamond drillholes FRCD001-3 (Figures 1-4).

The spodumene is a green at the Grants prospect, in contrast to the spodumene at BP33 prospect in which it had both green and pink spodumene. The spodumene crystals are usually large with some greater than 10cm (Figures 1-3).

On preliminary inspection it appears that the pegmatite at Grants comprises only a few simple minerals, in overall order of abundance: feldspar, spodumene, quartz and muscovite (less than 5%). These are roughly similar in texture and concentration in all the holes.

In all holes the pegmatite has a simple zonation from wallrock inward: 1-2m thick quartzmica rich margins; 15-20 m spodumene rich medial zones and a 5-10 m central spodumene zone.

A 26 Gray Court, Adelaide SA 5000 | T (08) 7324 2987 | E [email protected]

www.coreexploration.com.au

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Figure 4. FRDD001 and X-section BP33 Prospect, Finniss Lithium Project, NT.

A 26 Gray Court, Adelaide SA 5000 | T (08) 7324 2987 | E [email protected] www.coreexploration.com.au

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Finniss Lithium Project Background

Core’s Finniss Lithium Project covers a large portion of the Bynoe Lithium-Tantalum-Tin Pegmatite field (Figure 5).

Core’s drilling at Finniss has intersected high lithium grades and spodumene mineralisation within a number of pegmatites at Finniss.

The Bynoe Field is a 15-20 kilometre wide belt of more than 90 tin and tantalum prospects and mines and lithium rich pegmatites which stretches over a distance of 75 kilometres south from Port Darwin and is one of the most prospective areas for lithium in the NT.

Core’s Finniss Lithium Project has substantial infrastructure advantages being close to grid power, gas, and rail and services infrastructure and within easy trucking distance by sealed road to the multi-user port facility at Darwin Port - Australia’s nearest port to Asia.

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Figure 5. Drill target locations, Finniss Lithium Project, NT.

A 26 Gray Court, Adelaide SA 5000 | T (08) 7324 2987 | E [email protected]

www.coreexploration.com.au

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For further information please contact:

Stephen Biggins Managing Director Core Exploration Ltd 08 7324 2987

[email protected]

The information in this report that relates to Exploration Results and Mineral Resources is based on information compiled by Stephen Biggins (BSc(Hons)Geol, MBA) as Managing Director of Core Exploration Ltd who is a member of the Australasian Institute of Mining and Metallurgy and is bound by and follows the Institute’s codes and recommended practices. He has sufficient experience which is relevant to the styles of mineralisation and types of deposits under consideration and to the activities being undertaken to qualify as a Competent Person as defined in the 2012 Edition of the “Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves”. Mr. Biggins consents to the inclusion in the report of the matters based on his information in the form and context in which it appears. This report includes results that have previously been released under JORC 2012 by Core as “High Grade Spodumene Confirms Significant Lithium Discovery” (23/09/16), “Highest Grade Spodumene Intersections Ever Drilled in the NT” (3/10/16) and “Further High Grade Lithium Intersections at Finniss” (20/10/16).

A 26 Gray Court, Adelaide SA 5000 | T (08) 7324 2987 | E [email protected]

www.coreexploration.com.au

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JORC Code, 2012 Edition – Table 1 report template Section 1 Sampling Techniques and Data

(Criteria in this section apply to all succeeding sections.)

Criteria JORC Code explanation Commentary Commentary
Sampling Nature and quality of sampling (eg cut channels, random chips, or Sub surface HQ drill core has been collected at FRCD001-4 by
techniques specific specialised industry standard measurement tools appropriate diamond core drilling technique (see below).
to the minerals under investigation, such as down hole gamma No material has been prepared for assays as yet. Visual estimates of
sondes, or handheld XRF instruments, etc). These examples should mineralogy and content with the aid of UV light and LIBS portable
not be taken as limiting the broad meaning of sampling. analyser.
Include reference to measures taken to ensure sample representivity Drill hole oriented approximately perpendicular to the interpreted
and the appropriate calibration of any measurement tools or systems strike of the mineralised trend.
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.
Drilling Drill type (eg core, reverse circulation, open-hole hammer, rotary air Drilling technique used at Finniss in relation to this ASX release
techniques blast, auger, Bangka, sonic, etc) and details (eg core diameter, triple comprises conventional wireline HQ coring using a track mounted rig
or standard tube, depth of diamond tails, face-sampling bit or other under contact with WDA Drilling (Kalgoorlie).
_type, whether core is oriented and if so, by what method, etc). _
Drill sample Method of recording and assessing core and chip sample recoveries Sample recoveries are visually estimated and recorded for each
recovery and results assessed. metre. To date sample recoveries have averaged >95%.
Measures taken to maximise sample recovery and ensure Drilling contractor notes intervals of poor recovery and provides this
representative nature of the samples. information to the client.

A 26 Gray Court, Adelaide SA 5000 | T (08) 7324 2987 | E [email protected]

www.coreexploration.com.au

Criteria
JORC Code explanation
Commentary
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.
Geology of the drill core is logged on a geological basis with attention
to main rock forming minerals and textrures within the pegmatite
intersections.
Pegmatite sections are also checked under a single-beam UV light
and LIBS portable analyser for spodumene identification on an ad hoc
basis. These only provide indicative qualitative information.
Estimation of mineral modal composition, including spodumene, is
done visually. This method will be improved in the coming months via
the implementation of whole-tray analysis by broad UV light source
and spectral analysis. This will then be correlated to assay data when
theyare available.
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.
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.
Sampling has not yet been conducted
Quality of
assay data
and
laboratory
The nature, quality and appropriateness of the assaying and
laboratory procedures used and whether the technique is considered
partial or total.
Forgeophysical tools, spectrometers, handheld XRF instruments, etc,

Assays have not yet been conducted

A 26 Gray Court, Adelaide SA 5000 | T (08) 7324 2987 | E [email protected]

www.coreexploration.com.au

Criteria
JORC Code explanation
Commentary
tests
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) andprecision have been established.
Verification
of sampling
and
assaying
The verification of significant intersections by either independent or
alternative company personnel.
The use of twinned holes.
Documentation of primary data, data entry procedures, data
verification, data storage (physical and electronic) protocols.
Discuss any adjustment to assay data.

No sampling or assay of this drillhole have been conducted
Location of
data points
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.
All coordinate information was collected using hand held GPS utilizing
GDA 94, Zone 52.
Drillholes are to be surveyed by a down hole camera
Data spacing
and
distribution
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.

Varies from prospect to prospect – initial program comprised 1-4
holes into each prospect. This diamond core hole was sighted to twin
an existing RC hole and assay data from that hole should reflect
those that will be returned from this DDH. (refer ASX announcement
19/10/2016).
Orientation
of data in
relation to
geological
structure
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.

Drilling is typically oriented perpendicular to the interpreted strike of
mineralisation

The drill intersection is oblique to the dip of the pegmatite to the
order of approximately 70%
Sample
security
The measures taken to ensure sample security.

Company geologist supervises all sampling and subsequent
storage in field.

A 26 Gray Court, Adelaide SA 5000 | T (08) 7324 2987 | E [email protected]

www.coreexploration.com.au

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Criteria JORC Code explanation Commentary
Audits or The results of any audits or reviews of sampling techniques and data.
None completed
reviews

Section 2 Reporting of Exploration Results

(Criteria listed in the preceding section also apply to this section.)

Criteria JORC Code explanation Commentary
Mineral Type, reference name/number, location and ownership including Drilling is being conducted on EL 29698 100% owned by Core.
tenement agreements or material issues with third parties such as joint The area being drilled comprises Vacant Crown land
and land ventures, partnerships, overriding royalties, native title interests, There are no registered heritage sites covering the areas being
tenure status historical sites, wilderness or national park and environmental drilled.
settings. EL 29698 is in good standing with the NT DME Titles Division.
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 Acknowledgment and appraisal of exploration by other parties. The history of mining in the Bynoe Harbour – Middle Arm area dates
done by back to 1886 when tin was discovered by Mr C Clark.
other parties The records of production for many mines are not complete, and in
numerous cases changes have been made to the names of the mines
and prospects which tend to confuse the records still further. In many
cases the published names of mines cannot be linked to field
occurrences.
In the early 1980s the Bynoe Pegmatite field was reactivated during a
period of high tantalum prices by Greenbushes Tin which owned and
operated the Greenbushes Tin and Tantalite (and later spodumene)
Mine in WA. Greenbushes Tin Ltd entered into a JV named the
Bynoe Joint Venture with Barbara Mining Corporation, a subsidiary of
Bayer AG of Germany.
Greenex (the exploration arm of Greenbushes Tin Ltd) explored the
Bynoe pegmatite field between 1980 and 1990 and produced tin and
tantalite from its Observation Hill Treatment Plant between 1986 and

A 26 Gray Court, Adelaide SA 5000 | T (08) 7324 2987 | E [email protected]

www.coreexploration.com.au

Criteria
JORC Code explanation
Commentary
1988.
They then tributed the project out to a company named Fieldcorp Pty
Ltd who operated it between 1991 and 1995.
Since 1996 the field has been defunct until recently when exploration
has begun on ascertaining the lithium prospectivity of the Bynoe
pegmatites.
The NT geological Survey undertook a regional appraisal of the field,
which was published in 2004 (NTGS Report 16, Frater 2004).
 Corehasrecently completed a4 holesRC drilling programatBP33
Geology
Deposit type, geological setting and style of mineralisation.
The tenements sampled cover the northern and southern portions of
a swarm of complex zoned rare element pegmatite field, which
comprises the 55km long by 10km wide West Arm – Mt Finniss
pegmatite belt (Bynoe Pegmatite Field; NTGS Report 16).
The Finniss pegmatites have intruded early Proterozoic shales,
siltstones and schists of the Burrell Creek Formation which lies on the
northwest margin of the Pine Creek Geosyncline. To the south and
west are the granitoid plutons and pegmatitic granite stocks of the
Litchfield Complex. The source of the fluids that have formed the
intruding pegmatites is generally accepted as being the Two Sisters
Granite to the west of the belt, and which probably underlies the
entire area at depths of 5-10 km.
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:
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
o hole length.
If the exclusion of this information isjustified on the basis that the
Hole
East
North
Azimuth
Dip
TD
Reference
FRCD001
693090
8598986
270°
55°
103.7m
FRC018 twin
FRCD002
693106
8599070
270°
55°
112.7m
FRC017 twin
FRCD003
693001
8599090
090°
55°
124.6m
FRC006 twin
Refer text of the report

A 26 Gray Court, Adelaide SA 5000 | T (08) 7324 2987 | E [email protected]

www.coreexploration.com.au

Criteria
JORC Code explanation
Commentary
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.
Data
aggregation
methods
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.
No grades reported
Relationship
between
mineralisatio
n widths and
intercept
lengths
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’).
The true width is approximately 60- 70% of the reported intersection
based on the early interpretation of these being steeply dipping
pegmatites
Diagrams
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.
Refer representative photos of pegmatite drill core and figures in
report
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 intersections have been reported and are considered
representative. Refer table of drill hole collar..
No assays have yet been received from the laboratory
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

See release details

All meaningful and material data reported

A 26 Gray Court, Adelaide SA 5000 | T (08) 7324 2987 | E [email protected]

www.coreexploration.com.au

Criteria
JORC Code explanation
Commentary
deleterious or contaminating substances.
Further work
The nature and scale of planned further work (eg tests for lateral
extensions or depth extensions or large-scale step-out drilling).
Diagrams clearly highlighting the areas of possible extensions,
including the main geological interpretations and future drilling areas,
provided this information is not commercially sensitive.
Assays of drillcore
Further RC and diamond drilling subject to results
Testwork on drill-core

A 26 Gray Court, Adelaide SA 5000 | T (08) 7324 2987 | E [email protected]

www.coreexploration.com.au