MANTLE RESOURCES INC.
FOR IMMEDIATE RELEASE
info@mantleresources.com
BALANCE OF ASSAY RESULTS FROM 2007 PROGRAM
24.54 METERS GRADING 13.25% ZINC, 2.24% LEAD, 17.04 g/t SILVER
FROM 100% OWNED AKIE PROPERTY, B.C.
Vancouver, B.C. � February
21, 2008 � Mantle Resources Inc. (TSX Venture: MTS; Frankfurt:
AOF7E1) (the �Company�) is pleased to announce that the
balance of the assay results from the 2007 drill program have been
received.� Highlights include: hole
A-07-47 (27.07 metres grading 11.46% Zn+Pb); hole A-07-51 (24.54 metres grading
15.49% Zn+Pb) and hole A-07-53 (16.23 metres grading 15.15% Zn+Pb).� With these results, all assays have now been
received from the 2007 exploration program on the zinc-lead bearing Cardiac
Creek deposit (the �CC Deposit�) at its 100% owned Akie property, in
northeastern British Columbia, approximately 260 kilometers north-northwest of
the town of Mackenzie.
The tables below summarize the data for the balance of
the drill holes at the Cardiac Creek Deposit:
Hole
No.
|
From
(m)
|
To
(m)
|
Interval
(m)
|
TW
(m)
|
Zinc
%
|
Lead
%
|
Silver
(g/t)
|
Zn+Pb
%
|
A-07-53*
|
389.50
|
417.35
|
27.85
|
18.62
|
9.70
|
1.84
|
16.01
|
11.54
|
including
|
401.12
|
417.35
|
16.23
|
10.86
|
12.72
|
2.43
|
19.45
|
15.15
|
A-07-52
|
741.00
|
744.00
|
3.00
|
1.18
|
2.20
|
0.15
|
5.70
|
2.35
|
A-07-51
|
463.37
|
498.98
|
35.61
|
23.42
|
10.60
|
1.80
|
15.10
|
12.40
|
including
|
472.46
|
497.00
|
24.54
|
16.18
|
13.25
|
2.24
|
17.04
|
15.49
|
A-07-48
|
384.57
|
419.71
|
35.14
|
24.75
|
5.86
|
1.13
|
9.16
|
6.99
|
including
|
387.37
|
394.41
|
7.04
|
4.94
|
9.10
|
1.04
|
7.45
|
10.14
|
and
|
405.26
|
414.11
|
8.85
|
6.25
|
8.07
|
1.60
|
14.31
|
9.67
|
A-07-47**
|
353.13
|
380.20
|
27.07
|
18.71
|
9.63
|
1.83
|
13.69
|
11.46
|
including
|
360.20
|
380.20
|
20.00
|
13.83
|
11.61
|
2.25
|
15.71
|
13.86
|
including
|
368.88
|
380.20
|
11.32
|
7.84
|
13.45
|
2.48
|
17.81
|
15.93
|
or
|
356.64
|
365.70
|
9.06
|
6.25
|
10.33
|
2.06
|
15.76
|
12.39
|
notes
|
|
|
|
|
|
|
|
|
*�
A-07-53: there is a 3.14 m wide band of barren shale included in the
reported mineralization
|
|
|
|
** A-07-47: there is a 3.00 m wide band of
barren shale included in the reported mineralization
|
|
|
|
Hole
No.
|
Azimuth
(deg)
|
Dip
(deg)
|
TD
(m)
|
Grid
(S)
|
Grid
(W)
|
El
(m)
|
A-07-53
|
060
|
-79
|
460.08
|
3135
|
75
|
1424.0
|
A-07-52
|
205
|
-63
|
852.00
|
2941
|
345 (E)
|
1424.0
|
A-07-51
|
063
|
-80
|
513.90
|
2928
|
75
|
1540.0
|
A-07-48
|
060
|
-68
|
446.84
|
2928
|
75
|
1540.0
|
A-07-47
|
055
|
-72
|
401.12
|
3275
|
55
|
1433.0
|
note: A-07-52 was collared from the footwall
|
|
|
|
|
For all but
hole A-07-52, the true width of the mineralization varies between approximately
66% and 71% of the reported interval, but is subject to revision.
Of the holes
reported, two key holes -- A-07-47 and A-07-48 (combined with previously
reported hole A-07-49 grading 13.65% Zn+Pb over 20.19 metres) -- further
indicate that the CC Deposit remains open up dip over a strike length of 400
metres.� By including two previous holes
drilled by Inmet, this up dip potential covers a minimum strike length of 600
metres.� In addition, holes A-07-53 and
A-07-51 confirm the central axis of higher grade and thicker
mineralization.� Hole A-07-52, the
deepest hole drilled by Mantle in 2007, encountered a fault zone just below the
mineralization, indicating a possible fault displacement of the target
horizon.� Hole A-07-51, a step out of
approximately 100 metres from A-05-32 (14.69% Zn+Pb over 26.7 metres), also
provides additional confirmation that the deposit remains open to the northwest
and down plunge. Not reported in the above table for A-07-51 was an
intersection of massive sulphides from 503.55 to 507.80 grading 11.91% Zn+Pb �
this footwall interval may indicate a new and separate lens of mineralization
that will require further drilling to define.
�We are
extremely pleased with the high grades and thicknesses we have consistently
encountered at the CC Deposit.� These are
the kinds of results that will provide Mantle a solid platform for growth.� Given the open ended nature of the deposit
and the better understanding we now have of the trends of mineralization, our
2008 drilling program will be focused on expanding the zone of mineralization,�
commented Jim Mustard, President of Mantle.
�With the CC
Deposit continuing to deliver these elevated grades and widths and with the
potential to further increase the size of the deposit, without a doubt the Akie
property now takes on a strategic role in our future.� Combined with our dominant land package,
Mantle is very well positioned to further unlock the value of this world class
zinc-lead district.�
Plans are
already well underway for the upcoming 2008 exploration season.� The Company looks forward to providing
further details in this regard in the coming weeks.
Assay Samples and Procedures
All core
selected for analysis is split by diamond saw and sampled, with a maximum of
1.5 metres of core in each sample.� These
are placed in plastic bags, shipped in secure containers to Acme Analytical
Laboratories Ltd., Vancouver, B.C., and there subjected to aqua regia digestion
followed by ICP-ES and ICP-MS analysis (Acme Group 7AX Multi-Element Assay) to
determine zinc, lead and silver content. Standards and blanks are inserted into
the assay stream at a rate of about one of each for every 25 core samples.� Check assays are regularly carried out as
necessary by Global Discovery Labs, also in Vancouver,
employing aqua regia digestion followed by atomic absorption finish (Group 4).
About the Akie Property
The Akie
zinc-lead property is situated within the southern-most part (Kechika Trough)
of the regionally extensive Paleozoic Selwyn Basin, one of the most prolific
sedimentary basins in the world for the occurrence of SEDEX zinc-lead-silver
and stratiform barite deposits.
Drilling on
the Akie property by Inmet Mining Corporation during the period 1994 to 1996
and by Mantle in 2005, 2006 and 2007 has identified a significant body of
baritic-zinc-lead SEDEX mineralization (Cardiac Creek Deposit).� The deposit is hosted by variably siliceous,
fine grained clastic rocks of the Middle to Late Devonian �Gunsteel� formation.
Two similar
deposits, Cirque and South Cirque, located some 20 kilometers northwest of Akie
and owned under a joint venture by Teck Cominco and Korea Zinc, are also hosted
by Gunsteel rocks and have a combined geologic inventory in excess of 50
million tonnes averaging approximately 10% combined zinc+lead.
Qualified Person
John
R. Fraser, P.Geo. (B.C.) is the Qualified Person for the
Company, as defined by NI 43-101, and is responsible for the technical
information contained in this release.
The TSX Venture Exchange has neither approved
nor disapproved the contents of this press release.
MANTLE RESOURCES INC.
ON BEHALF OF
THE BOARD OF DIRECTORS
�Peeyush Varshney�
Peeyush
Varshney, LLB
CEO and
CHAIRMAN