Salamanca I Airborne Survey
Berkeley Resources Limited
05 February 2008
5 February 2008
BERKELEY RESOURCES LIMITED
AERIAL SURVEY CONFIRMS POTENTIAL OF SALAMANCA I PROJECT
The Directors of Berkeley Resources Limited (AIM: BKY.L) are pleased to present
the interpreted results of the aerial radiometric and magnetic survey recently
flown over the Company's Salamanca I project.
The survey has confirmed and extended the potential to add additional uranium
resources in outcropping and covered areas in proximity to the existing resource
base of almost 17 million lbs of U3O8.
In particular, it has significantly enlarged target areas associated with known
uranium mineralisation at the Zona 7 deposit, and at the two previously mined
areas, Mina Caridad and Mina Cristina. It has also identified covered extensions
of favourable lithology along strike from the Retortillo and Santidad deposits.
An extensive new program of RC drilling has commenced with the aim of assessing
the highest priority targets over the next six months.
A full version of this announcement including radiometric and magnetic data
images can be downloaded from Berkeley's website at
www.berkeleyresources.com.au.
Enquiries -
Managing Director: Matt Syme Telephone: +61 417 906 717
Email: info@berkeleyresources.com.au
Background
The helicopter-borne survey over the Salamanca I area comprised 3,336 line
kilometres flown by an internationally recognised contractor on 100m spaced
north - south lines using a towed magnetic sensor at a nominal height of 35m
with a spectrometer inside the aircraft.
The survey specifications, supervision, quality control and data interpretation
were undertaken in conjunction with Berkeley's senior geophysical consultant,
Bob White. Bob is a geologist and geophysicist with an MSc in Geology/Geophysics
and 30 years experience in the industry. He has worked worldwide for Cominco,
Pancontinental Mining, Getty Oil (Jabiluka), Queensland Mines (Nabarlek), and
Newcrest Mining amongst others.
The area flown includes the Retortillo, Santidad and Zona 7 deposits and also
the Mina Caridad and Mina Cristina areas, where previous trial mining by Spanish
government entities confirmed the presence of significant uranium
mineralisation. The survey area is bounded to the South East by a series of
outcropping quartzite ridges, to the North West by the Villavieja granites and
to the East by extensive Tertiary cover, of which a substantial part occurs
within the survey area.
The quality of the data set is extremely good due to excellent flying conditions
and rigorous QAQC protocols on flying and the processing procedures.
The radiometric survey (uranium channel only shown) defines the granites to the
North and West and also shows the strong radiometric anomalies associated with
the Retortillo, Santidad and Zona 7 deposits and the historic Cristina and
Caridad mines. Importantly, these anomalies extend well beyond currently known
mineralization. The large radiometric low in the centre and South East
represents almost continuous Tertiary cover over potentially prospective
meta-sediments.
The aeromagnetic data confirms potential extensions of favourable lithologies
beneath cover for 5 km to the South East of the Retortillo deposit and for 3 km
to the North West of the Santidad deposit. It has also provided new
lithostructural information to guide exploration of the significant target
extensions at Zona 7, Caridad and Cristina.
TARGET AREAS
Retortillo SE Extension
The presence of Tertiary sediments over the southern half of the Retortillo
deposit and any possible extensions to the South East prevents the use of
radiometrics as a guide to mineralization. However, the aeromagnetic data
suggests continuation of favourable Retortillo lithologies to the South East for
a strike length of over 5 km. In addition, this data indicates a structural
break coinciding with the end of known mineralisation (as defined by drilling)
and a possible shallowing of Tertiary cover to the South East. Initial drill
testing of covered stratigraphy will commence in the current quarter.
Santidad
Interpretation of the airborne data indicates continuation of favourable
Santidad stratigraphy and anomalous magnetics for another 3km to the North West
of current drilling, up to the granite contact. Tertiary cover extends over most
of this strike length, however, radiometric data suggests thinning to the North
West. Drilling at Santidad has also indicated the potential for a parallel zone
of mineralization 200m to the North West of the Santidad deposit. This potential
zone coincides with a magnetic anomaly that also extends to the granite contact.
Drill testing of these potential extensions will be undertaken in the current
quarter.
Zona 7
At Zona 7, approximately 14km north of Retortillo, uranium mineralisation was
discovered in the late 1960's and confirmed in diamond drilling by Berkeley in
2007. Mineralisation was intersected over a strike length of approximately 1km
and previously announced intersections including:
• ZN7-001 0 to 25m @ 0.11% U308; and
• ZN7-007 2 to 25.8m @ 0.123% U308
highlight the shallow, high grade potential of this deposit.
The airborne survey indicates a significant increase in potential with
continuation of the main radiometric anomaly for an additional 2km to the South
West of the deposit, within the favourable contact metamorphic zone. In
addition, the radiometrics indicate extension of the deposit anomaly for another
1.5km to the South East, within the prospective stratigraphy. Aeromagnetic data
also suggests the possibility of further untested potential to the South East,
beneath Tertiary cover.
Systematic RC testing of Zona 7 targets will follow current work at Santidad.
Mina Cristina
Mina Cristina was the site of a limited surface mining operation by the Junta
Energia Nuclear (JEN) in the 1960's and some workings remain, with high surface
radiometric readings and secondary uranium showings at surface. The airborne
radiometric data indicates that the Cristina mineralisation is much more
extensive than previously identified and has identified new anomalies in the
metamorphic aureole to the North East of Cristina. Aeromagnetic data highlights
the potential for possible stratigraphic extensions beneath the Tertiary cover
to the South East.
Mina Caridad
Caridad was also the site of a limited JEN mining operation in the 1960's which
included underground development as well as a small open pit. The combined
radiometric and magnetic survey results suggest significant extension of
mineralization within a specific stratigraphic unit for approximately 1.0km to
the south and 1.5km to the south east of the historical mine.
Initial assessment of the Cristina and Caridad prospects by RC drilling will
follow work at Zona 7, with the aim of completing this work within 6 months.
AERIAL SURVEY DATA FOR SALAMANCA II AND CACERES VI
Following completion of the Salamanca I survey in November, a further 2,590 line
km was flown at the Salamanca II and Caceres VI projects. Results of these
surveys will be released in the next few weeks, when the final processed data
and interpretations have been received.
The information in this report that relates to Exploration Results, Mineral
Resources or Ore Reserves is based on information compiled by Mr Peter Ellis,
who is a Member of The Australian Institute of Geoscientists and an employee of
Berkeley Resources Limited. Mr Ellis 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 Edition of the 'Australasian Code for Reporting of Exploration
Results, Mineral Resources and Ore Reserves'. Mr Ellis consents to the inclusion
in the report of the matters based on his information in the form and context in
which it appears.
This information is provided by RNS
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