Hope it helps
Results have been received from a scanning electron microscope
(SEM) study of drill chip samples from RC hole PCRC020 at the
Thunderball Uranium Prospect. This hole returned a high grade
intercept of 3 metres at 2,964 ppm U3O8 including 1 metre at 8,071
ppm U3O8 (ASX 21 January 2009). The SEM work identified the
uranium minerals uraninite (UO2) and lermontivite (uraniumphosphate).
The uraninite is present as fine, disseminated crystals
(1 to 10 microns in size) within the rock matrix.
In June, diamond drill hole TPCDD006 intersected the Thunderball
shear zone approximately 20 metres along strike to the north and 15
metres down dip from PCRC020 (ASX 10 June 2009). The diamond
core exhibited strongly anomalous radioactivity with visible uraninite
mineralisation present, as shown in the photograph below.
The SEM results together with the presence of visible uraninite in
drill core indicate that uranium was deposited in the Thunderball
shear zone through hydrothermal activity and is not the result of
secondary enrichment. This confirms potential for uranium
mineralisation to continue at depth and be extensively distributed
throughout the host structure.
An extensive RC and diamond drilling program intended to test the
full 900 metres of prospective strike at Thunderball, initially to a
vertical depth of 100 to 150 metres, is expected to commence within
two to three weeks pending receipt of all statutory approvals.
Segment of Drill Core from 98m Down Hole in TPCDD006
The details contained in this report that pertain to ore and mineralisation are based upon
information compiled by Mr Brian Richardson, a full-time employee of the Company. Mr
Richardson is a Member of the Australasian Institute of Mining and Metallurgy (AUSIMM) and
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 December 2004 edition of the “Australasian Code for Reporting of
Exploration Results, Mineral Resources and Ore Reserves” (JORC Code). Mr Richardson
consents to the inclusion in this report of the matters based upon his information in the form
and context in which it appears.
ASX
ANNOUNCEMENT
19 June 2009
Thundelarra Exploration Ltd
ABN 74 950 465 654
ACN 085 782 994
For further information
regarding Thundelarra
Exploration Ltd contact:
Brett Lambert
Managing Director
or
Brian Richardson
Executive Director
Phone: + 61 8 9321 9680
Fax: + 61 8 9321 9670
Website:
www.thundelarra.com
Email:
[email protected]
Registered Office:
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