new uranioum licences in botswana

ACN 064 755 237
CARDIA TECHNOLOGIES LTD
REGISTERED OFFICE
Suite 510 Level 5 Pacific Tower 737-741 Burwood Road Hawthorn Victoria 3122 Australia
Telephone +61 3 9813 3228 Facsimile +61 3 9813 2668 Email: [email protected]
TO: COMPANY ANNOUNCEMENTS OFFICE
AUSTRALIAN SECURITIES EXCHANGE
DATE: 22 May 2007
DETAILS OF NEW URANIUM LICENCES IN BOTSWANA.
The Board of Cardia is pleased to advise that it has now received details of the eleven
(11) Uranium Prospecting Licences (PL¡¦s) granted by the Department of Geological
Survey in the Republic of Botswana to Cam Bow Holdings (Pty) Limited a 100%
subsidiary of Cardia Technologies Limited (CNN), as advised to the market on the 1st
of May 2007.
Details of the PL¡¦s, which are located in the north-west, central and eastern parts of
Botswana, and cover a total area of approximately 10,000 sq kms are as follows.
ľ SCHEDULE OF TENEMENTS:
TENEMENT PL NO AND NAME AREA( SQ KMS)
PL73/2007 GUMARE 990.7
PL74/2007 DJONDO 995.5
PL75/2007 NTWETWE 1000.0
PL76/2007 SEXARA 479.0
PL77/2007 KUBU 994.7
PL78/2007 MOSU 934.2
PL79/2007 TUTUME 629.5
PL80/2007 TULI WEST 1000.0
PL81/2007 TULI NORTH 785.1
PL82/2007 TULI SOUTH 1000.0
PL83/2007 NYETSI 996.3
TOTAL AREA SQ KMS 9805.0
Note: All the above PL¡¦s have been granted for radio actives-(including uranium)
base and precious metals.
ACN 064 755 237
CARDIA TECHNOLOGIES LTD
REGISTERED OFFICE
Suite 510 Level 5 Pacific Tower 737-741 Burwood Road Hawthorn Victoria 3122 Australia
Telephone +61 3 9813 3228 Facsimile +61 3 9813 2668 Email: [email protected]
ľ LOCATION MAP:
Location of these tenements is pointed out in the map below.
ľ GENERAL OVERVIEW:
The Company will be looking for palaeo-channel, calcrete-hosted and sandstonehosted
uranium mineralisation in the Karoo sediments, similar to those that host
recent discoveries in Africa such as Mokobaesi in Botswana, Langer Heinrich in
Namibia and Kayalekera in Malawi. Uranium exploration has been conducted on
some of these tenements in the 1970¡¦s, with radiometric anomalies and surficial
uranium mineralisation already identified
„«Central Tenements
The central tenements cover Karoo sandstone/mudstone geology of the same age and
type as where Uranium has been discovered by A-Cap Resources recently.
ACN 064 755 237
CARDIA TECHNOLOGIES LTD
REGISTERED OFFICE
Suite 510 Level 5 Pacific Tower 737-741 Burwood Road Hawthorn Victoria 3122 Australia
Telephone +61 3 9813 3228 Facsimile +61 3 9813 2668 Email: [email protected]
Four of the ¡§Central¡¨ tenements are located on the western side of Sua salt pan and
cover an area of approximately 3,000 sq kms. The new tenements lie to the west of
tenements held by A-Cap Resources Limited and Bannerman Limited, which are
located on the opposite, eastern, side of Sua Pan. Both these companies are exploring
for similar Karoo sediment-hosted uranium mineralisation. Uranium minerals
carnotite and torbernite have previously been recorded in Karoo sediments on the east
side of Sua Pan.
Two other tenements lie further east. These are also aimed at Karoo sediment hosted
uranium mineralisation.
„«North-West Tenements
The 2 North ¡VWest Tenements lie south of, and adjacent to, the uranium exploration
tenements held by A-Cap Resources Limited at North and South Uray. The new
tenements lie north of tenements held by Gcwihaba Resources. They cover area of
approximately 2000 sq kms.
„«Eastern Tenements
The 3 Eastern tenements are surrounded by tenements held by Albidon Limited and
cover an area of approximately 3,000 sq kms. The tenements cover the entire
Botswana portion of a Karoo age volcano-sedimentary basin, which extends into
Zimbabwe and South Africa.
ľ DETAILS OF EACH TENEMENT:
„« PL 73/2007 GUMARE (North-West) and PL 74/2007 DJONDO (North-
West)
These PL¡¦s are located south of the ¡§South Uray¡¨ tenement held by A-Cap
Resources Limited, in north-west Botswana¡¦s Ngamiland District. The A-Cap
¡§South Uray¡¨ tenement covers the Chaduum palaeo-channel, and has reported
sample assay results of up to 1,328 ppm U3O8.
The new ¡§Gumare¡¨ tenement covers the downstream extension of the Chaduum
drainage along a strong north-south structural feature towards the south. The
drainage then turns onto a south-east trend along another strong linear structural
feature, which also clearly defines the edge of the recent Okovango swamp, south
of Nokaneng village.
This feature also intersects the linear, probably structurally controlled,
Cwihabidum drainage just west of the Okovango Delta.
These apparently recent structural features/drainage intersections were previously
highlighted in 1980 by Union Carbide¡¦s uranium exploration consultant, as
possible structural features which may have acted as conduits to uranium
ACN 064 755 237
CARDIA TECHNOLOGIES LTD
REGISTERED OFFICE
Suite 510 Level 5 Pacific Tower 737-741 Burwood Road Hawthorn Victoria 3122 Australia
Telephone +61 3 9813 3228 Facsimile +61 3 9813 2668 Email: [email protected]
mineralisation. Recent uranium enriched water flow has been established in the
north-western Ngamiland drainages of Kkhandum and Chaduum, and ground
water flow towards the Okovango Delta might be expected to transport uranium.
The adjacent ¡§Djondo¡¨ tenement also focuses on major recent structural features
which transect the Okovango Delta on a NE-SW trend. These intersect the ESE
trend of the Gquashadum Valley, a palaeo-channel which is expressed further to
the west.
Primary targets on both these tenements will be near surface secondary
accumulations of uranium associated with these structural features, which may be
masked by more recent Kalahari cover. These accumulations may be in Kalahari
non-pedogenic calcretes, sands and consolidated sandstones/mudstones.
„« PL 78/2007 MOSU (Central)
This tenement lies along the southern edge of Sua Pan, part of the Makgadikgadi
Basin. The tenement adjoins A-Cap Resources ¡§Mea¡¨ uranium tenement to the
east.
Previous work in the area comprises limited exploration by Urangesellschaft in the
late 1970¡¦s. Urangesellschaft conducted a reconnaissance airborne radiometric
survey which defined two anomalies at Ntsokota Pan, which lies within this
tenement. Limited ground follow up defined uranium mineralisation associated
with calcareous sediments of the Karoo age Kautse Formation. A small number of
samples (9) were taken, with results including values of 131, 150, 423 and 700
ppm U3O8 reported.
Primary exploration targets comprise potentially uraniferous sediments of the
Karoo age Kautse and/or Tlapana Mudstone Formations, as well as possible more
recent calcrete or pan deposits. The high TDS of waters in the Makgadikgadi basin
are considered to be favourable to the precipitation of uranium minerals ¡V carnotite
and torbernite have been previously recorded as occurring on the eastern side of
Sua Pan. As a long term basinal feature, the Makgadikgadi basin has the potential
to be a significant repository of transported uranium mineralisation.
„« PL 77/2007 KUBU (Central)
This tenement covers the low-lying peninsula between the large Sua and Ntwetwe
salt pans, which make up the Makgadikgadi Pans. The tenement is contiguous with
the ¡§Mosu¡¨ tenement (PL 76/2007) to the south. Recent Kalahari-age surficial
cover ranges from nil to more significant thicknesses.
ACN 064 755 237
CARDIA TECHNOLOGIES LTD
REGISTERED OFFICE
Suite 510 Level 5 Pacific Tower 737-741 Burwood Road Hawthorn Victoria 3122 Australia
Telephone +61 3 9813 3228 Facsimile +61 3 9813 2668 Email: [email protected]
The area within this tenement was explored by Falconbridge in the late 1970¡¦s. An
airborne radiometric survey was flown, comprising some 570 line kilometres flown
on east-west lines, at an altitude of 100 metres above the ground. Three obvious
anomalies were defined by that survey, all lying within the boundaries of this
tenement.
The major anomaly was centered on Thabatshukudu Pan, which lies roughly in the
centre of the tenement. Limited ground work comprised very wide spaced
traverses. A number of pits were dug through the thin surficial cover, but did not
penetrate the underlying calcrete. No mineralisation was noted in the surficial
cover, but the calcrete or underlying formations were not tested. Limited outcrop
of thin limestones (probably Kautse Formation) on the east side of the pan were
anomalously radioactive. Assay results of only four samples of these limestones
gave a maximum value of 149 ppm U3O8.
The source of the peak anomaly on the west side of the Pan has not been explained.
A second substantial anomaly was located in the south-eastern part of the tenement
and appears associated with a small island located just off the peninsula. This has
been mapped as comprising basement ortho-gneiss, with Falconbridge also
referring to the outcrop as Syenite Island. Syenite-type igneous rocks are known to
frequently host anomalous uranium values.
The airborne radiometric anomalies were located to the north and west of the
island. Very shallow dipping limestones were mapped striking east-west over some
600 metres along the edge of the peninsula in this area. Only two surface grab
samples of the limestones attributed as causing the anomalies were collected.
These samples assayed 270 ppm U3O8 and 364 ppm U3O8. These figures are
considered very encouraging.
The limestones are believed to be Karoo aged Kautse Formation sediments, and
can be expected to have considerable lateral extent and be relatively flat-lying in
this area
The third significant airborne anomaly comprised a series of linear north-south
series of anomalies along the eastern edge of the Peninsula. The very limited
ground work that was conducted did not explain these anomalies.
Primary targets comprise potentially uraniferous sediments of the Karoo age
Kautse and/or Tlapana Mudstone Formations, as well as possible more recent
calcrete or pan deposits. The high TDS of waters in the Makgadikgadi basin are
considered to be favourable to the precipitation of uranium minerals. Uranium
minerals carnotite and tobernite have been previously recorded in or associated
with Karoo sediments on the opposite side of Sua Pan, some 40kms to the east.
ACN 064 755 237
CARDIA TECHNOLOGIES LTD
REGISTERED OFFICE
Suite 510 Level 5 Pacific Tower 737-741 Burwood Road Hawthorn Victoria 3122 Australia
Telephone +61 3 9813 3228 Facsimile +61 3 9813 2668 Email: [email protected]
„« PL 76/2007 SEXARA (Central)
The ¡§Sexara¡¨ tenement extends along the north-eastern part of the low lying
peninsula between Sua and Ntwetwe Pans. The tenement is contiguous with the
¡§Kubu¡¨ tenement to the south, and ¡§Ntwetwe¡¨ tenement to the west.
Previous uranium exploration does not appear to have extended as far north as this
tenement, with Falconbridge¡¦s 1970¡¦s airborne radiometric survey terminating at
the southern end of this tenement.
The known occurrence of uranium mineralisation recorded in Karoo age rocks on
the eastern, southern and western margins of Sua Pan, suggest such mineralisation
may extend further north into this tenement. Exploration will require re-evaluation
of the thickness of recent Kalahari cover and possible mineralisation within this
Kalahari sequence. Conditions for the formation of near surface uraniferous
calcareous sediments are considered very favourable. However a major focus will
be the identification and assessment of the mineralisation potential of underlying
Karoo age rocks, and in particular the Kautse and Tlapana Mudstone formations.
„« PL 75/2007 NTWETWE (Central)
The Ntwetwe tenement lies along the north-western side of the low lying peninsula
separating Sua and Ntwetwe Pans in the Makgadikgadi Basin. This tenement is
contiguous with ¡§Kubu¡¨ to the south-east and ¡§Sexara¡¨ to the east. Previous
uranium exploration does not appear to have extended over this area before, with
Falconbridge exploring the adjacent ¡§Kubu¡¨ area to the south.
The known occurrence of uranium mineralisation recorded in Karoo age rocks on
the eastern, southern and western margins of Sua Pan, suggest such mineralisation
may extend further north into this tenement. Exploration will require re-evaluation
of the thickness of recent Kalahari cover, and possible mineralisation within this
Kalahari sequence. Conditions for the formation of near surface uraniferous
calcareous sediments are considered very favourable. However a major focus will
be the identification and assessment of the mineralisation potential of underlying
Karoo age rocks, and in particular the Kautse Formation and Tlapana Mudstone
formations.
This tenement covers part of the major NE-SW structural feature ¡§The
Makgadikgadi Line¡¨, and it is possible this structure has had an influence on
mineralizing fluid migration, or the proximity of potential basement uranium
source rocks.
ACN 064 755 237
CARDIA TECHNOLOGIES LTD
REGISTERED OFFICE
Suite 510 Level 5 Pacific Tower 737-741 Burwood Road Hawthorn Victoria 3122 Australia
Telephone +61 3 9813 3228 Facsimile +61 3 9813 2668 Email: [email protected]
„« PL-83/2007 NYETSI (Central)
This tenement lies to the north of uranium tenements held by A-Cap Resources and
African Energy Resources. The tenement lies some 60kms north of A-Cap¡¦s
Mokobaesi uranium deposit, and covers the same geological formations.
Significant thickness and lateral extent of uraniferous Karoo sediments have been
reported at A-Cap¡¦s Mokobaesi deposit, in addition to surfical uraniferous calcrete.
In addition, significant uranium values have been reported from Karoo aged rocks
around the Makgadikgadi Pans area, as well as in coal exploration drilling. The
wide spread of these sampling locations suggests that these Karoo age formations
may represent a previously unrecognised significant depository of uranium
mineralisation. Although some radioactive mineral assaying or measurements have
been undertaken during historical uranium and coal exploration, the actual number
of Karoo samples assayed is relatively small. No significant effort appears to have
been previously directed at the uraniferous potential of the Karoo rocks over a
large area.
This tenement is designed to test the potentially uraniferous sediments of the
Karoo age Kautse and/or Tlapana Mudstone Formations, as well as possible more
recent surficial calcrete deposits.
The primary exploration target will be sandstone or mudstone hosted deposits,
possibly of a roll- front nature.
„« PL79/2007 TUTUME
This tenement lies some 160kms north of the Mokobaesi uranium deposit currently
being explored by A-Cap Resources. The Tutume licence will explore the same
potentially uraniferous sediments of Lower to Middle Karoo age, as well as
possible more recent calcrete or pan deposits.
The previously reported occurrence of uranium mineralisation in Karoo age rocks
through-out large parts of northern and eastern Botswana suggests that these Karoo
age formations may represent a previously unrecognized significant depository of
uranium mineralisation.
There has been no known previous exploration for radioactive minerals in this
tenement. However, the tenement is located along strike in the same formations as
surficial Karoo uranium mineralisation reported historically by other exploration
companies.
ACN 064 755 237
CARDIA TECHNOLOGIES LTD
REGISTERED OFFICE
Suite 510 Level 5 Pacific Tower 737-741 Burwood Road Hawthorn Victoria 3122 Australia
Telephone +61 3 9813 3228 Facsimile +61 3 9813 2668 Email: [email protected]
The Mokobaesi uranium deposit currently being explored by A-Cap Resources is
situated in the equivalent formations some 170kms to the south. This exploration
appears to be defining significant near-surface thickness and lateral extent of
uranium mineralisation in Karoo sediments.
In addition, significant uranium values have previously been reported from Karoo
aged rocks at surface around the Makgadikgadi Pans some 70 kms to the south
west.
„« PL 80/2007 ¡§TULI WEST¡¨; PL 81/2007 ¡§TULI NORTH¡¨ , PL 82/2007
¡§TULI SOUTH¡¨ (Eastern Tenements)
These tenements lie in the extreme east of Botswana, in the Tuli Basin structure.
This Karoo age basin extends from Eastern Botswana into Zimbabwe and South
Africa to the east. This basin is not directly connected to the other Karoo
sediments in the other Central licences, but was probably connected in the
geological past.
There is potential that the Karoo sediments within this basin may host similar
uranium mineralisation as that seen at the Mokobaesi deposit located some 120
kms to the west. The Tuli Basin differs from the other prospective areas as having
late Karoo basalts overlying most of the area.
Previous exploration in the area of these tenements has included poorly
documented uranium exploration conducted by Urangesellschaft in the vicinity of
the village of Bobonong (which lies within PL80/2007 ¡§Tuli West¡¨). This
comprised reconnaisance airborne radiometric surveying covering approximately
500 square kilometres over the extreme south-western edge of the basin only. A
total of seven airborne radiometric anomalies were noted, of which 6 were
reported as basement anomalies, and 1 was reported as occurring within Karoo
sediments.
Ground follow up appears to have been limited to vehicle borne radiometric
surveys and the collection of a few samples.
The Tuli Basin has also been explored historically for coal by Anglo American
Corporation, with several boreholes drilled and intersecting Karoo coal seams.
These boreholes appear to confirm that sediments of the same type and age are
present in the Tuli Basin, as occur at the Mokobaesi uranium deposit to the west.
Rock types include carbonaceous and non-carbonaceous mudstones and
apparently clean quartz sandstones. Shallow dips of around 5 degrees to the north
are noted in the Karoo strata of the Tuli Basin.
ACN 064 755 237
CARDIA TECHNOLOGIES LTD
REGISTERED OFFICE
Suite 510 Level 5 Pacific Tower 737-741 Burwood Road Hawthorn Victoria 3122 Australia
Telephone +61 3 9813 3228 Facsimile +61 3 9813 2668 Email: [email protected]
Exploration will be focussed on conventional roll front type deposits which may
be expected to develop in the clean quartz sandstones, as well as the mudstone
associated mineralisation which appears more prevalent at Mokobaesi.
PAT VOLPE
Chairman
The information in this report that relates to exploration results is based on
information compiled by Mr Callum Kerr, who is a member of the Australasian
Institute of Mining and Metallurgy. Mr Callum Kerr is an independent geologist of
the Company. Mr Kerr has sufficient experience which is 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 Editions of
the ¡§Australasian Code for Report of Exploration Results, Mineral Resources and
Ore Reserves.¡¨ Mr Kerr consents to the inclusion in the report of the matters based
on his information in the form and context in which it appears.