Minotaur Exploration Limited : 3 May12 - Major Exploration Target Established for Poochera Kaolin Project South Australianew!
05/02/2012| 10:23pm US/Eastern

Recommend:
ASX RELEASE
MINOTAUR
EXPLORATION
MINOTAUR EXPLORATION LIMITED ACN 108 483 601 ASX:
MEP
247 GREENHILL ROAD, DULWICH, SOUTH AUSTRALIA 5065
T (61 8) 8366 6000 F (61 8) 8366
6001 E
admin@minotaurexploration.com.au
www.minotaurexploration.com.au
3 MAY 2012
MAJOR EXPLORATION TARGET ESTABLISHED FOR POOCHERA KAOLIN
PROJECT SOUTH AU STRALIA
HIGHLIGHTS
? An Exploration Target* has been determined, for the
first time, for the entire
Poochera Kaolin Project near Streaky Bay, South Australia.
? The Exploration Target is based on 220 historical
drill holes and 224 new air core drill holes at five separate
deposits.
? The Exploration Target is estimated at 570 to 810
million tonnes of white kaolinised granite containing 40% to
60% minus 45 micron kaolin (kaolinite ± halloysite)
with
high ISO Brightness (R457 ? 80).
? The Exploration Target is in addition to the recently
announced Carey's Well
Measured Resource of 16.3 million tonnes of "bright white"
kaolinised granite.
Minotaur Exploration Limited ("Minotaur", ASX Code: MEP) is
pleased to announce an Exploration
Target for its Poochera Kaolin Project on tenement EL 4575
(Figure 1). The tenement is held
100% by Minotaur's wholly-owned subsidiary Great Southern
Kaolin Pty Ltd. It is located near Poochera, about 50
kilometres inland from the coastal town of Streaky Bay on the
west coast of South Australia's Eyre Peninsula and just 150km
from the bulk handling port at Ceduna.
Five kaolin deposits have been defined from 220 historical
drill holes and a further 224 new drillholes on the tenement
(Figure 2). The five deposits: Condooringie Well; Carey's
Well; Tootla; Karcultaby South and Tomney, have a total
Exploration Target estimate of 570 to 810 million tonnes of
white kaolinised granite containing 40% to 60% minus 45
micron kaolin (kaolinite ± halloysite) with high ISO
Brightness (R457 ? 80) (Table 1).
|
Kaolin Deposit
|
Exploration Target
|
- 45µ kaolin Range
|
ISO Brightness Estimate
|
|
Condooringie Well
|
40 to 48 million tonnes
|
40% - 60%
|
R457 ?80
|
|
Carey's Well
|
50 to 60 million tonnes
|
40% - 60%
|
R457 ?80
|
|
Tootla
|
47 to 57 million tonnes
|
40% - 60%
|
R457 ?80
|
|
Karcultaby South
|
23 to 27 million tonnes
|
40% - 60%
|
R457 ?80
|
|
Tomney
|
410 to 620 million tonnes
|
40% - 60%
|
R457 ?80
|
|
Total
|
570 to 810 million tonnes
|
40% - 60%
|
R457 ?80
|
Table 1: Poochera Kaolin Deposits: Exploration Target*
Parameters.
* The term "Exploration Target" should not be
misconstrued as an estimate of Mineral Resources and Reserves
as defined in the JORC Code (2004), and the term has not been
used in that context. The term is conceptual in nature and it
is uncertain if further exploration will result in the
determination of a Mineral Resource. Refer Clause 18 of the
JORC Code (2004).
1
Poochera
ADELAIDE
Figure 1: Location of EL4575 Tootla and the Poochera Kaolin
Deposits.
2
The Exploration Target for the Carey's Well deposit is
additional to the recently announced Carey's Well Measured
Resource of 16.3 million tonnes of "bright white" kaolinised
granite (refer to Minotaur ASX release dated 8 February
2012). The Carey's Well Exploration Target is immediately
adjacent to and contiguous with the Carey's Well Measured
Resource (Figure 3), and the other deposits are within 10
kilometres (Figures 2 and 3).
ESTIMATION METHODOLOGY
The Exploration Target is estimated from a review of all
available data from 220 historical drill holes and a further
224 air core drill holes completed in 2011 by Minotaur at
Carey's Well, Condooringie Well, Tomney East and Tootla
(Figure 2). Data used included:
? Drill data and geological drill logs
? Sample preparation and physical testing data (kaolin
content and brightness determinations)
? Chip tray photographs (for Minotaur drill
holes).
Historical drill data are of lesser quality than the 2011
drill data because:
? Drill hole intervals are quite large and hole
distribution is generally erratic
? Some uncertainty on drill collar locations
? Not all kaolin intervals were tested for kaolin
content and brightness
? Various preparation, testing methods and instruments
were used so that results are not
necessarily comparable hole to hole.
For each historic drill hole, intervals of white kaolinised
granite were estimated from the drill logs supported, where
possible, by the results of any testing of physical
parameters undertaken on drill samples. Where more than one
interval of white kaolinised granite occurred within a drill
hole, a total intercept of white kaolinised granite was
calculated provided that the intervals were no more than 5m
apart. For intervals greater than 5m apart, only the upper
interval of white kaolinised granite was used.
The analysis of historic data was supported by test results
from Minotaur's 2011 air core drilling program at Carey's
Well, Condooringie Well, Tootla and Tomney. The 2011 drilling
program
was undertaken by Johannsen Drilling using an Edson 2000
drilling rig. Air core hole diameter was 75mm. Some holes
were precollared using a RAB open hole hammer down to the
top
of the kaolinised granite interval in order to allow
penetration of hard bands of calcrete close to the surface
and, where present, a silcrete horizon at the top of the
kaolinised granite.
Complete one-metre intervals for each hole were retained in
plastic bags. Geological logging was undertaken by Minotaur
geologists and a visual colour estimate was recorded for each
kaolinised granite sample. These colour estimates were used
as the principal basis for selection of composite samples
(maximum 5 metres) for further testing. All holes were
located and levelled
by differential GPS.
3
ESTIMATION METHODOLOGY continued
The Minotaur drill holes provided accurate test data but the
holes only cover a limited portion of the Exploration Target
areas. Relevant work on Minotaur drill samples included
preparation of a minus 45 micron kaolin fraction for each
sample via a standardised processing technique through
Minotaur's pilot plant at Streaky Bay. ISO Brightness
(R457) and Colour (La*b*) measurements were
undertaken in accordance with TAPPI Standard T 534 om-03
using an Industry standard TechniBrite TB 1-C instrument at
Minotaur's Streaky Bay laboratory.
Figure 2: Poochera Kaolin Project: Drill hole locations and
boundaries of the kaolin deposits incorporated in the
Exploration Target.
Drill hole intercepts of white kaolinised granite were
contoured and thickness estimates calculated. To estimate
tonnages, a Specific Gravity (SG) of dry, in-situ, kaolinised
granite of 1.7 was used
(in accordance with SG determinations from Carey's Well dry
kaolinised granite bulk samples).
The kaolinised granite has developed as a simple, in-situ,
weathered mantle, of varying thickness, over fresh,
coarse-grained granite and older metamorphic rocks. Variation
in source rocks may be a contributing factor to variation in
kaolin form and quality. These variations may have positive
implications for a range of potential niche kaolin
markets.
Comprehensive testing of Carey's Well "bright white" kaolin
has confirmed its suitability to produce a range of premium
hydrous and calcined products for the paint, paper and
polymer industries (refer to Minotaur ASX release dated 16
September 2010). Testing of kaolin from the Tomney deposit by
Normandy Industrial Minerals Ltd concluded that the Tomney
deposit has potential as high quality ceramic kaolin
comparable in quality to the premium clays from New Zealand
and England.
4
ESTIMATION METHODOLOGY continued
Figure 3: Poochera Kaolin Project: Exploration Target
summary.
Data in this document that relates to the Exploration Target
for the Poochera Kaolin Deposits are based on information
evaluated by Mr Lewis Barnes who is a Member of the
Australian Institute of Geoscientists and who has sufficient
experience relevant to the style of mineralisation and type
of deposit under consideration and to the activity which he
is undertaking 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 (the
"JORC Code"). Mr Barnes is a contract employee of Minotaur
Exploration Ltd and he consents to the inclusion in the
document of the Exploration Targets in the form and context
in which they appear.
For further information contact:
Andrew Woskett (Managing Director) or Tony
Belperio (Exploration Director) Minotaur Exploration
Ltd
T +61 8 8366-6000
5
distributed by
|
|
Recommend :