PWN Lake Barlee Project Returns Encouraging Potash Values
Released
Released
Announcement PDF
ASX Announcement
30 May 2017
____________________________________________________________________________________
PARKWAY MINERALS (ASX:PWN) LAKE BARLEE PROJECT RETURNS
COMPANY DETAILS
ENCOURAGING POTASH VALUES
ABN: 62 147 346 334
PRINCIPAL AND
REGISTERED OFFICE
Parkway Minerals NL
Level 1
675 Murray St
West Perth WA 6005
HIGHLIGHTS:
•
•
•
Additional tenement pegged taking total area to 1956 sq km
Initial field sampling completed
Solution assays up to 2430mg/l potassium returned from surficial
water samples
POSTAL ADDRESS
PO Box 1088
West Perth WA 6872
W
www.parkwayminerals.com.au
E info@parkwayminerals.com.au
P +61 8 9479 5386
F +61 8 9475 0847
ASX CODE
PWN
FRANKFURT CODE
A1JH27
OTC PINK CODE
PWNNY
CORPORATE
INFORMATION
(30 May 2017)
353M Ordinary shares
123M partly paid shares
18M Listed Options
5M Unlisted options
BOARD OF DIRECTORS
Adrian Griffin
(Non-Executive Chairman)
Patrick McManus
(Managing Director)
Chew Wai Chuen
(Non-Executive Director)
Natalia Streltsova
(Non-Executive Director)
Fertiliser feedstock explorer Parkway Minerals (ASX: PWN), (PWN, Parkway
or The Company) is pleased to announce the results of its initial sampling
program on it’s 100% owned Lake Barlee Potash Brine Project.
The Lake Barlee Project is located approximately 200 km north of the
township of Southern Cross in Western Australia (Figure 1). A field trip has
been carried out, to collect near surface brine and surface samples and to
plan logistics prior to the next stage of exploration. Significant values of
both potassium and magnesium were recorded.
Parkways Managing Director, Patrick McManus, said “ The samples were
taken from near the lake surface, after two significant rain events. The fact
that they still registered high values of potassium and magnesium is
encouraging.
The target horizons are the deeper brines that may be present in ancient
river valleys, below the lakes. The Company has engaged a hydrologist to
assist with targeting the next phase of work to identify the paleo-valleys.
The Company intends to complete “proof of concept “ drill testing on
these targets as soon as practicable
Parkway Minerals NL: Lake Barlee Field Trip
May 2017
BACKGROUND
The Lake Barlee project is a salt lake in mid west region of Western Australian, north of Southern Cross
(Fig 1). The Company has recently secured an additional exploration license application taking its
landholding for the Project to 1956 sq km. This gives the Company the dominant landholding on the lake.
The Company’s principal exploration target will be paleochannels within the lake that may contain
concentrations of potassium, or lithium mineralization. This is a similar exploration model to salt lake
potash explorers at Lake Wells, Lake McKay, and Lake Disapointment. Should the Company’s exploration
be successful, the Lake Barlee Project holds significant infrastructure advantages that could significantly
reduce costs to any future operation.
Lake Barlee is a large paleovalley salt lake that overlies a basement of granite and greenstone rocks of
Archaean age. The sequence has been cut by north south crustal scale thrusts faults and later east west
tending Proterozoic dykes which could be one of the controls on the formation of the lake topography.
Geoscience Australia‘s 2013 publication “A Review of Australian Salt Lakes and Assessment of there
potential for Strategic Resources “( Record 2013/39) identified Lake Barlee has having potential to host
potassium and lithium mineralization in the lake sequences .
Following unseasonal heavy rains in the early part of the year, the Company has recently completed a
preliminary field inspection and sampling program over parts of the central section of the project area. A
total of nine brine water samples and 14 auger geochemical samples were collected from shallow (<1m )
auger holes over two areas accessiable from existing tracks around the southern perimeter of the lake. The
samples were assayed by Bureau Veritas Minerals Laboratories in Perth. The brine samples were analysed
for Na, Ca, K, P, Mg, Li,Cl,-U,P, SO4, NO3 and TDS and the geochemical samples for Ba, Ca, K, Li, Mg, Na, P,
Th, U. A location plan and list of results is presented at the end of this report.
Samples were collected from two areas around the central peninsula. From Area 1 on the eastern side of
the peninsula, eight brine warer samples and nine geochemical samples were collected. Part of the area
was still under water from the earlier rainfall possibly diluting the solution assays. Brine concentrations
ranged between 1340 mg/l to 2430 mg/l and averaged 2140mg/l.
The second area sampled, Area 2, is on the south western side of the peninsula, where five geochemical
and one brine sample was collected. The brine sample from this area returned 1530 mg/l K, however
sampling is this area was hampered by poor recovery of fluid from the shallow auger holes.
The current program did not test the primary target which is deeper alluvial channel sands within the lake.
However the sampling results suggest that potassium and magnesium in solution is present in high
concentrations in the near surface brine.
NEXT STEPS
These preliminary results are encouraging and the Company is engaging a hydrologist to assist with
targeting the deeper channel sand systems. This work is expected to include airborne and ground
geophysical surveys leading to identification of sites for drilling to determine thickness of channel sands
and concentration of potassium and other elements in the brines.
Parkway Minerals NL: Lake Barlee Field Trip
For further details please contact:
Parkway Minerals NL:
Patrick McManus
Managing Director
Mob:+61 408 956 798
Email:patrick.mcmanus@parkwayminerals.com.au
Web: www.parkwayminerals.com.au
FIgure 1: Lake Barlee Location
May 2017
Parkway Minerals NL: Lake Barlee Field Trip
May 2017
Solutions
Sample ID
Sample
Type
East
North
Depth
Description
PLBA001
Auger
738058
6767549
0.4
Muddy/surface water
PLBA002
Auger
738256
6767546
0.5
Muddy/surface water
PLBA003
Auger
738453
6767551
0.4
Muddy/surface water
PLBA004
Auger
738720
6767673
1
Muddy/surface water
PLBA005
Auger
738990
6766567
0.4
Muddy/surface water
PLBA006
Auger
739116
6766609
0.4
Muddy/surface water
PLBA007
Auger
739255
6766643
0.4
Muddy/surface water
PLBA008
Auger
739403
6766677
0.4
On island
PLBA009
Auger
739534
6766772
0.4
Muddy/surface water
PLBA010
Auger
739534
6766772
PLBA015
Auger
725731
6760679
0.4
dry surface
PLBA016
Auger
725801
6760375
0.4
dry surface
PLBA017
Auger
725878
6760060
0.4
dry surface
PLBA018
Auger
725953
6759753
0.4
dry surface
PLBA019
Auger
726028
6759446
0.4
dry surface
Table 1: Solution assays
TDS
Ca
Na
K
Li
Mg
P
Cl
SO4
NO3
U
V
g/ kg
mg/L
mg/l
mg/L
mg/L
mg/L
mg/L
m/g/l
mg/L
mg/l
ug/L
mg/L
2430
0.05
7220
-10
-5
-1
2090
0.05
5970
-10
6.7
-5
-1
2190
0.05
5660
-10
-5
-1
1340
0.05
3620
-10
15.3
-5
-1
2260
0.05
5700
-10
5
-1
2130
0.05
5550
-10
2230
0.05
5320
-10
175050
177850
541
254.2
609
179.1
1180
98000
615
65100
606
639
261.8
267.3
surface water sample
663
96900
580
102000
621
214.4
945
81700
2420
0.05
6080
-10
2170
0.05
4850
-10
1530
0.05
4510
-10
14400
167850
12400
11800
111700
9040
11200
11300
10900
1.5
12100
1.5
-5
-1
10
-1
5
-1
-5
-1
10200
137950
10100
15.2
-5
-1
Parkway Minerals NL: Lake Barlee Field Trip
May 2017
Solids
Sample ID
Sample
Type
East
North
PLBA001
Auger
738058
6767549
0.4
Muddy/surface water
PLBA002
Auger
738256
6767546
0.5
Muddy/surface water
PLBA003
Auger
738453
6767551
0.4
Muddy/surface water
PLBA004
Auger
738720
6767673
1
Muddy/surface water
PLBA005
Auger
738990
6766567
0.4
Muddy/surface water
PLBA006
Auger
739116
6766609
0.4
Muddy/surface water
PLBA007
Auger
739255
6766643
0.4
Muddy/surface water
PLBA008
Auger
739403
6766677
0.4
On island
PLBA009
Auger
739534
6766772
0.4
Muddy/surface water
PLBA010
Auger
739534
6766772
PLBA015
Auger
725731
6760679
0.4
dry surface
PLBA016
Auger
725801
6760375
0.4
dry surface
PLBA017
Auger
725878
6760060
0.4
PLBA018
Auger
725953
6759753
PLBA019
Auger
726028
6759446
Table 2: Solids assays
Depth
Description
TDS
Ba
Ca
K
Li
g/ kg
ppm
%
%
ppm
892
2.86
1.38
9
698
10.3
1.04
7
436
1.9
1.32
20
2.76
5.25
400
36.4
464
6.97
1.07
10.5
1.23
3.17
150
16.8
398
6.86
1.09
12
1.89
4.11
300
19.4
392
5.95
1.16
14
1.98
4.19
350
22.9
439
3.85
1.31
17.5
2.15
4.41
350
35.3
58
19.9
0.25
3
0.49
2.33
100
8.6
267.3
577
3.39
1.19
9.5
1.39
3.55
200
10.4
350
0.4
1.26
16
1.72
3.69
100
7.8
214.4
326
1.78
1.17
15.5
1.68
3.83
200
11.8
dry surface
354
0.59
1.3
17
1.83
3.72
150
7.6
0.4
dry surface
317
0.54
1.38
20.5
2.18
3.77
300
22.5
0.4
dry surface
458
0.4
1.39
20
2.19
4.03
400
22
254.2
179.1
261.8
Mg
Na
P
Th
%
%
ppm
ppm
1.17
3.31
200
13.2
0.95
2.75
150
15.4
surface water sample
Parkway Minerals NL: Lake Barlee Field Trip
May 2017
About Parkway Minerals
Parkway Minerals (ASX:PWN) is an exploration company focused on developing large greensand deposits
in West Australia’s Perth Basin. The Company aims to define a substantial resource base and investigate
how best to recover phosphate, potash and other minerals from the Dandaragan Trough. The project is well
situated in relation to infrastructure, with close access to rail, power and gas. A successful commercial
outcome will allow the Company to become a major contributor to the potash and phosphate markets at a
time of heightened regional demand.
The Company has a major land holding over the Dandaragan Trough, one of the world’s largest known
glauconite deposits, with exploration licenses and applications covering an area of over 2,082km2. Previous
exploration indicates glauconite sediments are widespread for more than 150km along strike and 30km in
width. Current JORC compliant Indicated Mineral Resources stand at 250Mt at 2.9% P2O5 of phosphate
mineralisation and 175Mt at 4.2% K2O, amenable to processing by the K-Max process (ASX release:3 June
2015). A pre-feasibility study is in progress for stage 1, production of phosphate fertilisers.
The Company owns 19.25M shares in Davenport Resources (ASX :DAV), focused on potash exploration in the
South Harz region of central Germany, and 7.3M shares in Lithium Australia NL(ASX:LIT,) focused on lithium
technology.
Competent Persons Statement
The information that relates to the sampling and geochemical analysis has been collected and compiled by
Mr James Guy. Mr Guy is a consultant engaged by the company and is a member of the Australian Institute
of Metallurgy. Mr Guy has sufficient experience in the style of mineralisation and the activites under
consideration to qualify as a competent person as defined in the 2012 Edition of the Australisian Code for
Reporting of Exploration Results, Mineral Resources and Ore Reserves. Mr Guy consents to the inclusion in
this report of the matters based on his information in the form and context in which it appears.
Appendix 1 JORC Tables
Section 1 Sampling Techniques and Data
(Criteria in this section apply to all succeeding sections.)
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).
• 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.
• 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.
Geological samples were collected from the sample barrel of the auger bit.
Drilling
techniques
Drill sample
recovery
Logging
• Whether core and chip samples have been geologically and
7
Brine samples were collected by inserting a hand suction pump into the
auger hole and pumping out brine solution.
• A hand operated auger fitted with a 62-mm soil bit was used to drill
the holes
• Recovery of geological sample material was by collecting material
from the sample barrel of the auger. The lake sediment was
competent clays. Recovery was effected by the sticky nature of the
clays. The auger bit was cleaned as much as possible between holes.
• Brine samples was recovered from gaping hole. The hole could
recharge after drilling as the holes were shallow (less than 1m)
• The geological sample material was uniform fine clay and no sample
bias
• The near surface lake sediment was saturated, brine samples
collected were representative of the water column intersected.
• All samples were collected by an experienced geologist. A brief
Criteria
JORC Code explanation
•
Subsampling
techniques
and sample
preparation
•
•
•
•
•
•
•
Quality of
assay data
and
laboratory
tests
Commentary
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.
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.
• The nature, quality and appropriateness of the assaying and
laboratory procedures used and whether the technique is considered
partial or total.
• 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.
8
description of the geological material sampled was made.
• No estimate was made of flow rates or recharge rates from the auger
holes.
• The results of the current sampling were not collected with the degree
of precision required for future resource or extraction studies.
• Approximately 500 gm of clay material recovered direct from the
auger barrel for analysis.
• No attempt was made to subsample the material
• No field standard or duplicates were collected.
• Given the fine mature of the clay material the sample size is
appropriate to provide a representative sample
• For the brine sampling, water was siphoned directly into a clean
1000ml plastic water bottle. The quantity of water recovered from
each site varied from approximately 500ml to 1000ml. Significant
mud was suspended in the brine which settled during storage.
• A sample of the surface lake water was collected to give an indication
of any contamination by surface waters and a blank deionized water
sample was also submitted with the batch.
• Due to the remote field location brine samples were not refrigerated
but were stored away from direct sunlight and submitted to the
laboratory within 3 days of collection.
• The brine sample volume is small but is adequate to give a
reasonable indication of the chemical properties of the fluids.
• All samples were sent to Bureau Veritas Mineral Laboratory, Perth.
• Geological samples were dried and pulverized. Samples were taken
into solution using a 4 acid digestion. Na,Ca, K,Mg,Na, P were
determined by Inductively Coupled Plasma Optical Emission
Spectrometry. Ba,Li,Th,U were determined by Inductively Coupled
Plasma Mass Spectometry
•
Solutions were analysed for Na,Ca, K,Mg,P,SO4, and V by
Inductively Coupled Plasma Optical Emission Spectometry and Li
and U by Inductively Coupled Plasma Mass Spectometry. TDS by
gravimetric, Cl - and NO3 were analysed colourmetrically
• A sample of deionized water was submitted as an analytical
solution blank, No other external standatd were submitted
• Standard laboratory QA/QC procedures were followed by the
analytical laboratory .
Criteria
JORC Code explanation
Commentary
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.
• 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 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.
• Due to the preliminary nature of the sampling program, and
consistent nature of the results no independent verification of the
results was considered necessary
Location of
data points
Data spacing
and
distribution
Orientation
of data in
relation to
geological
structure
Sample
security
Audits or
reviews
• The results of any audits or reviews of sampling techniques and data.
• The location of the auger holes was by hand held GPS with an
accuracy of between 2- 3 m.
• The datum was GDA 94 zone 50.
• The current sampling program was reconnaissance in nature. The
auger traverses were selected based on accessibility. Traverses are
approximal 1 – 1.5 km long with sample sites between 200 – 400 m
apart.
• The results of the current work will not be used in future resource
calculations
• The lake sediment is thought to be tabular in nature. Vertical sample
holes are considered appropriate.
• The area sampled was selected primarily on ease of access.
• Due to the large areal extent of the lake surface within the project
area the current sampling is not considered representative of the
project area.
• Samples were collected and stored on site before being transported
and delivered to the laboratory by field personnel involved in
collecting the samples
• No audits or reviews of the sampling technique or results has been
completed
Section 2 Reporting of Exploration Results
(Criteria listed in the preceding section also apply to this section.)
Criteria
JORC Code explanation
Commentary
Mineral
tenement
• 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
• Tenements forming the companies Lake Barlee Project are E
77/2347, E77/2409*, E77/2445*, E77/2446*, E77/2457*, E77/2450*,
E77/2451*, E77/2452*.
• Tenements marked with a * are in application stage and not granted.
9
Criteria
JORC Code explanation
Commentary
and land
tenure status
settings.
• The security of the tenure held at the time of reporting along with any
known impediments to obtaining a license 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:
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 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.
• All tenements and applications are held 100% by Parkway Minerals
NL
• The Wutha People are the traditional owners over the north-eastern
part of the project area (approximately 10% of the project area.) The
remainder of the project area is currently not under native title claim.
• There are currently no recorded national parks or reserves within the
area of the tenements.
• The tenement applications do not have any competing applications
that may put at risk the eventual grant of title.
• Samples were collected under the Company’s Miners Right
• Limited work has bene completed on the project area for potash in
the past.
• Jervios Mining Limited and Soraway Development Pty Ltd have both
in recent times held tenure over parts of the current project. Work
completed by both companies was restricted to processing
government geophysical data sets, shallow auger drilling and
chemical analysis and taking hand held scintillator readings
• The principal commodity being explored for is potassium within arid
salt lakes. Two types of deposit models are being used. Near
surface enrichment of potassium in brines that can be concentrated
and extracted by surface trenching, and potassium rich brines within
deeper channel sands that are believed to be developed and the
base and within the lake profile.
• Details of the location of the samples reported is provided in the
body of the report
10
Criteria
JORC Code explanation
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.
• 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.
• 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.
• 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 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.
Relationship
between
mineralisatio
n widths and
intercept
lengths
Diagrams
Balanced
reporting
Other
substantive
exploration
data
Further work
Commentary
11
Sample results are presented as reported by the laboratory, no
weighting, or application of high grade or low grade cuts have been
applied.
The lake sediments hosting the potential mineralisation within the
lake sediments or brines are flat lying, There is likely to be both
vertical and horizontial zonation withn the deposit .
• No down hole intervals of mineralisation have been reported.
•
• Appropriate plans and maps are provided in the body of the report
• All results have been included.
• Exploration work completed on the project at this stage is preliminary
in nature. Other work completed by the Company has included open
file search and acquisition and reprocessing of open file and
government geophysical datasets
• The Company intends to undertake additional surface sampling and
mapping. This work will be followed by surface geophysical surveys
including passive seismic and gravity to locate channels followed by
aircore drill testing.
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