Exploration target and drill schedule for Ravensthorpe
Released
Released
Announcement PDF
4 March 2016
ASX ANNOUNCEMENT
EXPLORATION TARGET & DRILL SCHEDULE ANNOUNCED FOR
RAVENSTHORPE NEAR OPERATING LITHIUM MINE
HIGHLIGHTS:
Lithium Australia defines two key areas for first drilling on southern portion
of its lithium prospective Ravensthorpe tenements, west of Esperance in
Western Australia
LIT defines an exploration target* of lithium mineralisation at a minimum
grade of 1% Li₂O (with a size range from 525,00t to 1,281,000t and grade
range of 0.8% - 1.2%)
Main focus is the Horseshoe #1 and Horseshoe #2 pegmatites (the primary
source rock for lithium)
Maiden drill program of up to 35 drill-holes scheduled once approvals
confirmed
Horseshoe is just kilometres from Galaxy-General Mining’s commissioning
Mt Cattlin lithium mine
SUMMARY:
The Directors of Lithium Australia NL (ASX: LIT) are pleased to announce that recent
fieldwork has identified an Exploration Target*1 of 525,00t to 1,281,000t and grade range
of 0.8% - 1.2%) at the southern end of the Company’s 100%-owned Ravensthorpe lithium
project, west of Esperance in southern Western Australia (see Figure 1).
* Exploration Target*: The potential quantities and grades are conceptual in nature and
there has been insufficient exploration to-date to define a Mineral Resource. It is not certain
that further exploration will result in the determination of a Mineral Resource under the
“Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore
Reserves, the JORC Code” (JORC 2012). The Exploration Target is not being reported as
part of any Mineral Resource or Ore Reserve.
The mineralisation, contained within the project’s “Horseshoe Prospect”, several
kilometres from Galaxy Resources Limited and General Mining Corporation Limited’s
operating Mt Cattlin lithium mine.
Figure 1: Location of LIT’s Ravensthorpe Lithium Project
PLANNED DRILLING
A maiden drilling program of up to 35 holes has been scheduled for Horseshoe and is expected to
commence by October once work permits have been approved.
Recent field work has confirmed the significance of the size of the Horseshoe prospect, its
numerous lepidolite outcrops (lithium hosting micas), and its shallow dip with minimal overburden
overlying the zone of lithium mineralisation.
The focus of the maiden drilling will be an area 650 metres long (Figure 2) containing the northern
part of the large 950 metres long and 25 metres thick Horseshoe #1 pegmatite and the adjacent
250 metres long, 25-35 metres thick Horseshoe #2 pegmatite.
Figure 2: Plan-view of LIT’s Horseshoe Prospect. Note that the areas of lepidolite-rich rock depicted
are only those of the Horseshoe Prospect, as they are the ones to be tested by drilling.
Lithium Australia Managing Director, Mr Adrian Griffin:
“It is indeed significant that so much un-touched lithium mineralization is sitting on the surface,
within kilometres of the Galaxy-General Mining lithium operations. The more we look, the more of
these less-common lithium minerals we find, and what has been the constraint to adding them to
inventory? It has been the cost of processing. The Sileach™ process puts an end to the energy
intensive process of roasting to recover lithium from silicates. Lithium Australia can used its 100%
owned Sileach™ process to recover lithium from all lithium silicates, including spodumene.
Lithium Australia plans to use the Sileach™ process to unlock stranded lithium deposits on a global
basis. Sileach™ is the start of a processing revolution that will lower the cost curve for the
production of lithium chemicals from spodumene, and open the door for the less conventional mica
deposits. We see the cost of hard rock lithium chemical production rivalling that of the low-cost the
brine producers and we have the technology to make that happen. The Horseshoe Pegmatite is a
great example and I look forward to the forthcoming exploration campaign.”
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 08 6145 0288 | 0418 927 658
Kevin Skinner Field Public Relations 08 8234 9555 | 0414 822 631
Competent Person Statement
The information in this report that relates to Exploration Results together with any related
assessments and interpretations is based on information compiled by Mr Peter Spitalny on behalf
of Mr Adrian Griffin, Managing Director of Lithium Australia NL. Mr Spitalny is a Member of the
Australasian Institute of Mining and Metallurgy and has sufficient experience relevant to the styles
of mineralisation under consideration and to the activity which he has undertaken to qualify as a
Competent Person.
Mr Griffin is a Member of the Australasian Institute of Mining and Metallurgy and has sufficient
experience relevant to the styles of mineralisation under consideration and to the activity being
reported 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 Peter Spitalny consents to the inclusion in the report of the matters based on his information in
the form and context in which it appears. The Company is not aware of any new information or
data that materially affects the information in this report and such information is based on the
information compiled on behalf of company Managing Director Mr Adrian Griffin.
APPENDIX 1: CALCULATION OF EXPLORATION TARGET
Statement of Assumptions
For all the calculations, the following assumptions were applied:
1. A minimum grade of 1% Li2O was required for the lithium mineralisation to economically
viable.
2. This minimum grade would be attained by rock comprised of at least 30% lepidolite (or
zinnwaldite).
3. Observed orientations and thicknesses at outcrops are persistent down-dip.
4. Bulk Density of 2.8t/m3 (pure lepidolite has a density of 2.85-2.90g/cm3 and pure zinnwaldite
has a density of about 3.0g/cm3, main contaminant likely to be quartz, density 2.65g/cm3)
The Horseshoe #1 Pegmatite; Western Limb
Strike Length of zone containing 30% or more lithium mica = 400m
True thickness of zone containing 30% or more lithium mica = 3.5m (estimated; range 2-5m)
Down-dip Length of zone containing 30% or more lithium mica (assuming limit of vertical depth of
-50m from the surface) = 150m
Volume = Strike length x True thickness x Down-dip length
= 400m x 3.5m x 150m
= 210 000 m3 (range: 120 000m3 to 300 000m3)
Potential tonnage* = to depth of -50m. Exploration Target range: 336 000t to 840 000t*
The Horseshoe #2 Pegmatite
Strike Length of zone containing 30% or more lithium mica = 150m (see note below)
True thickness of zone containing 30% or more lithium mica = 5m (range 3-7m; see note below)
Down-dip Length of zone containing 30% or more lithium mica (assuming limit of vertical depth of
-50m from the surface) = 150m
Volume = Strike length x True thickness x Down-dip length
= 150m x 5m x 150m
= 112 500 m3 (range: 67 500m3 to 157 500m3)
Potential tonnage* = to depth of -50m. (Exploration Target Range: 189 000t to 441 000t)*
Note: The core zone is shaped like a “U” and total length (following the “U”) is 250m but the strike
length of the “U” shaped core zone is about 150m. A consequence of this is that the potential true
thickness is doubled and could be up to 10m in parts.
THE HORSESHOE PROSPECT = Horseshoe #1 (western) + Horseshoe #2
= 588 000t + 315 000t
= 903 000t
Total Exploration Target Range; 525,000t-1,281,000t*
*Cautionary Statement
The calculations are based upon field observations of multiple small outcrops of rocks containing lithium
mineralisation, present as the lithium micas lepidolite or zinnwaldite or both. The ground between the
outcrops is obscured by scree and colluvium. Continuity of lithium mineralisation is inferred and
supported by the size, proximity and spatial relationships of lithium-rich outcrops but is unproven at this
stage of investigation. It is common for the core-zones of pegmatites to have orientations that differ
from the overall orientation of the pegmatite that contains them and to vary in thickness and length
down-dip.
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