New work firms up significant potential at Pilgangoora
Released
Released
Announcement PDF
14 January 2016
ASX ANNOUNCEMENT
New work firms up significant potential for lithium micas
at WA’s Pilgangoora “lithium hot spot”
Areas prospective for lithium “micas” identified at Pilgangoora in addition to PLS’ existing
spodumene-bearing pegmatite resource
Major mica style anomaly discovered just to northwest and separate to PLS’ pegmatite zones
Discovery of a major target for further evaluation
New results follow Lithium Australia’s high resolution soil geochemical survey over project area
under MOU with Pilgangoora owner, Pilbara Minerals
Potential for lithium micas sees Lithium Australia and Pilbara Minerals renegotiating MOU terms
aimed at expanding current evaluation work
New work has confirmed the significant potential for lithium “mica” styles to be added to Western
Australia’s emerging Pilgangoora lithium district, south of Port Hedland and where lithium resources based
around spodumene-bearing pegmatite mineralisation have already been proven.The new work has been
undertaken by Lithium Australia Limited (ASX: “LIT”) under the Company’s 2014 Memorandum of
Understanding (MOU) with Pilgangoora owner, ASX-listed Pilbara Minerals (ASX: “PLS”).It is a further boost
for both developers in what they regard as Western Australia’s rapidly developing “lithium hot spot”.
Pilgangoora and its surrounding area already host Pilbara Minerals’ world-class spodumene resource (PLS
ASX announcement 13 October 2015) and has attracted a number of other like participants, including Altura
Mining Limited (ASX: “AJM”), Metalicity Limited (ASX: “MCT”) and Dakota Minerals Limited (ASX: “DKO”) as
shown diagrammatically in Figure 1.
Figure 1. The Pilgangoora lithium hotspot is now host to a number of ASX-listed lithium explorers
and substantial lithium resources. Lithium Australia is evaluating lithium mica mineralisation
within the area subject of Pilbara Resources’ recently announced JORC Resources.
Background
Lithium Australia’s application of disruptive technology to the recovery of lithium from micas led to a MoU
with PLS to examine the commercial potential of lithium micas on PLS’ Pilgangoora project (ASX
announcements, 26 November 2014 and 19 June 2015).
As part of the evaluation, Lithium Australia undertook a high resolution soil geochemical survey targeting
the pathfinder elements indicative of lithium micas or their derivatives, being present in the soil profile. A
positive response is a high probability indicator of a nearby primary source of lithium mica. The data and
interpretation generated from the survey is shown in Figure 2.
Principal survey outcomes
The geochemical techniques employed across Pilgangoora were successfully pioneered on other lithium
mica projects within Lithium Australia’s project portfolio. The techniques use pathfinder elements as a
proxy for lithium, primarily lithium derived from micas. In addition to field generated results, control
samples were assayed for lithium to verify the veracity of the interpretation. The following observations
have been made:
1.
2.
3.
4.
5.
The elements used show an extremely strong correlation with lithium hosted by the pegmatite
swarm, the subject of PLS’ current drilling and resource evaluation;
Lithium micas were observed in PLS’ drill chips, and are associated with the known spodumene
mineralisation, albeit generally in low abundance;
The soil profile around the spodumene pegmatite swarms contains abundant lithium mica
indicators;
A significant geochemical anomaly has been defined in the northwest of the project area, with a
chemical signature typical of lithium micas, and separate to the spodumene-bearing lithium
mineralisation;
The survey identified further prospective spodumene targets at Pilgangoora, providing upside for
PLS.
Geochemical survey details
Lithium Australia’s detailed geochemical survey covered 70 km of traverse lines with samples taken on a
50mx200m grid. Samples were analysed using a Niton field-portable XRF with a number of samples
submitted to commercial laboratories for checks, calibration and lithium analysis (lithium cannot be
detected by field-portable XRF).
Along the main pegmatite swarm (Figure 2) which is the focus of PLS’ spodumene drilling and target of an
updated resource statement (PLS ASX announcement 11 January 2016) all show a strong response. In the
northwest of the Pilgangoora ground, there is a unique high response which is more indicative of lithium
micas than the more generalised geochemical response over the main pegmatite zone. This is a major
target for further evaluation.
In general, these occurrences are close to the lithium pegmatites and have resulted from weathering and
dispersion in the soil profile. The mineralogy and extent of these deposits will be the focus of some of
Lithium Australia’s future work in the area.
Figure 2 shows the outcropping pegmatites (blue) and their relationship with lithium mica geochemical
pathfinders. The very large anomaly in the northwest is interpreted as a concealed greisenised granite, the
geochemical signature of which separates it from the main pegmatite swarm.
Future objectives
Under the terms of the MoU between PLS and LIT, LIT was to provide PLS with a commercial development
proposal by 30 December 2015. The parties recognise the very high potential now for lithium micas in the
Pilgangoora area and are renegotiating the terms of the MoU to expand the evaluation for this potential
additional lithium source.
Lithium Australia Managing Director, Mr Adrian Griffin:
“The Pilgangoora lithium district has become a very interesting place for LIT. We have discovered lithium in
clays, and very large geochemical anomalies consistent with lithium mica mineralisation. Together with the
lithium micas contained within the pegmatites, the circumstances are very favourable for further positive
outcomes. Subject to our current MOU negotiations, we will progress our Pilgangoora mica work to ensure
every value add opportunity is seized upon.”
“The latest results also add to a very strong development and market period for Lithium Australia where the
Company closed 2015 on a high, having achieved significant increases in both market capitalisation and
share price for the year (LIT was the 7th best performing stock on the ASX, a return to shareholders of 292%)
despite the devastated junior mining sector.”
“We have this week announced a successful A$6.55 million capital raising (ASX release, 11 January 2016) on
the back of the previously announced contributing share issue (ASX release, 7 January 2016) and are
potentially well financed for the next two years.”
“These financial gains parallel our project gains which now see Lithium Australia involved in unique lithium
mica developments in Australia, Mexico and Europe.”
Adrian Griffin
Managing Director
Mobile +61 (0) 418 927 658
Adrian.Griffin@lithium-au.com
About Lithium Australia NL:
LIT is a dedicated developer of disruptive lithium extraction technologies. LIT has strategic alliances with a
number of companies, potentially providing access to a diversified lithium mineral inventory on three
continents.
MEDIA CONTACT:
Adrian Griffin Lithium Australia NL
Kevin Skinner Field Public Relations
08 6145 0288 | 0418 927 658
08 8234 9555 | 0414 822 631
COMPETENT PERSONS STATEMENT
Competent Persons Statement:
The information contained in the report that relates to Exploration Results of projects owned by Lithium Australia NL
and is based on information compiled or reviewed by Mr. Adrian Griffin, who is an employee of the Company and is a
Member of the Australasian Institute of Mining and Metallurgy and has sufficient experience which is relevant to the
style of mineralisation and type of deposit under consideration and to the activity which is being undertaken to qualify
as a Competent Person as defined in the 2004 Edition of the ‘Australasian Code for Reporting of Exploration Results,
Mineral Resources and Ore Reserves’. Mr. Griffin has given consent to the inclusion in the report of the matters based on
his information in the form and context in which it appears.
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