Drilling Report
SouthernEra Diamonds Inc. - DO-27 Joint Venture in Canada's NWT Returns
Encouraging Advanced Exploration Results
- 2005 Bulk Sample of DO-27 grades an average of 0.98 carats/tonne
- Large high grade central core identified
- Core drilling extends depth of kimberlite to over 465 meters
- Resource delineation core drilling program to commence in July
Shares Issued and Outstanding: 102,066,601
TSX: SDM
AIM: SRE
TORONTO and LONDON, June 14 /CNW/ - SouthernEra Diamonds Inc. (TSX: SDM;
AIM: SRE) has received an encouraging report from the operating partner of the
DO-27 Joint Venture, Peregrine Diamonds Ltd., following yesterday's release of
exploration results from the 2005 mini-bulk sample of the DO-27 kimberlite
pipe, which is located 23 kilometers southeast of the Diavik(TM) Diamond Mine
in Canada's NWT.
The central portion of the DO-27 main vent tested during the 2005 program
returned an average grade of 0.98 carats per tonne. The DO-27 pipe is made up
of a main vent and a subsidiary northeastern vent and comprises the southern
lobe of the Tli Kwi Cho kimberlite complex. The main vent of DO-27 has a
surface expression of over 400 meters by 200 meters (greater than 6 hectares)
and, combined with the northeastern subsidiary vent, has a surface area of
approximately 9 hectares.
A total of 1,806 diamonds were recovered using a 1mm screen. A total of
21 stones larger than one-half carat were recovered with the largest stones
coming from the central volcanic kimberlite facies. The four largest stones
were a 2.93 carat light brown flattened octahedron; a 2.66 carat off-white
tetrahexahedron; a 1.85 carat clean white octahedron; and a 1.62 carat clean
white complex tetrahexahedron. The diamonds have been sent to a number of
internationally recognized diamond valuators for complete valuations.
The Joint Venture completed six large diameter (13 3/4 inch) reverse
circulation (RC) drill holes in the DO-27 main vent during early 2005. This
produced 151.27 dry tonnes of kimberlite which was subsequently processed at
the Ekati(TM) Diamond Mine. The tonnages were calculated using measured and
estimated hole dimensions and measured specific gravities. Three N.Q. core
drill holes were also completed to give geological control on the RC drilling
and to provide additional information about the pipe at depth.
Two different primary pyroclastic kimberlite phases were intersected in
the portion of the pipe tested by the RC drilling. Holes RC 1, 2, 4, 5, and 6
sampled a layered sequence of primary pyroclastic tuffs in the central portion
of the pipe that were rich in chrome diopside and pyrope and contained lesser
amounts of fresh olivine. RC 3, the southernmost hole of the program,
intersected a completely different volcaniclastic kimberlite facies with high
concentrations of fresh olivine. The individual grades and specific diamond
information for the six RC holes are summarized below:
DO-27 - Pyrope, Chrome Diopside-Rich Facies
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Total Sample Total Carats No. Stones Largest
Drill Hole Depth Weight Carat per greater than Stones
(Meters) (Dry Tonnes) Weight Tonne Half Carat (Carats)
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RC 1 209 45.74 47.32 1.03 4 2.93, 1.62
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RC 2 124 28.96 27.66 0.96 5 1.85, 0.96,
0.94
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RC 4 93.5 12.02 11.99 1.00 1 2.66
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RC 5 83 12.20 11.66 0.96 3 0.76
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RC 6 77 9.54 7.4 0.78 1 0.5
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Total/Average 108.47 106.03 0.98 14
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DO-27 - Fresh Olivine-Rich Facies
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Total Sample Total Carats No. Stones Largest
Drill Hole Depth Weight Carat per greater than Stones
(Meters) (Dry Tonnes) Weight Tonne Half Carat (Carats)
-------------------------------------------------------------------------
RC 3 190.5 42.80 29.93 0.70 7 0.98
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The Joint Venture also completed a program of three N.Q. diamond drill
holes at DO-27 designed to test the depth of the kimberlite and to obtain
geological information on lithological variations detected in the RC drilling.
A total of 750 meters was drilled during April and May with the deepest hole
drilled to 465 meters of depth and ending in kimberlite and a second hole
drilled to 230 meters, which also ended in kimberlite.
This program has significantly extended the known depth of the DO-27
kimberlite, which was previously drilled to a maximum depth of 215 meters. The
N.Q. core will be sent for caustic fusion micro-diamond analysis which will
provide further information regarding the deeper levels in the pipe.
The DO-27 kimberlite was discovered in 1993. Initial exploration returned
promising microdiamond results through core drilling encouraging the joint
venture partners at the time to move directly to an underground bulk sampling
program in 1994. Technical problems encountered resulted in the sample being
collected in the northeastern subsidiary vent and not from the central portion
of the main vent as originally intended. Grades of 0.36 carats per tonne were
obtained from the subsidiary vent and work on the project was suspended. The
main vent of DO-27 was never tested during the 1994 program. The latest
results contrast with the previous results from the peripheral kimberlite
facies and confirm that the DO-27 kimberlite contains a large and high grade
central portion to the pipe.
The DO-27 JV intends pursuing an extended program of diamond drilling at
both DO-27 and the nearby DO-18 pipe (the northern lobe of the Tli Kwi Cho
complex) starting July, 2005. DO-18, located 700 meters to the north of DO-27,
occurs on land under a thin veneer of till cover. Microdiamond grades as high
as 1.41 carats per tonne over 242 meters were reported at DO-18 from several
diamond drill holes completed in 1993.
The DO-27 Joint Venture comprises Peregrine Diamonds (54.475%), Archon
Minerals Ltd. (13.275%), Aber Diamond Corp. (7.35%), DHK Diamonds Inc. (20%)
and SouthernEra Diamonds Inc. (4.9%). Peregrine Diamonds will be responsible
for the sole funding of the next $500,000 of core drilling at DO-27 in order
to complete its earn-in obligations.
Dr. Jennifer Pell, P.Geo., of Peregrine Diamonds is the Qualified Person
who oversaw the entire program at DO-27. Mr. Howard Coopersmith of Coopersmith
& Associates, Colorado, provided audits on the sample protocols and
procedures. AMEC Americas Limited in Vancouver audited the drilling and
sampling protocols as well as provided quality assurance/quality control
audits on the actual drilling, sampling, and evaluating procedures.
SouthernEra Diamonds is one of Canada's largest fully integrated diamond
companies with extensive diamond exploration in five countries including
Canada, Australia, Gabon, the DRC and South Africa. This represents the fourth
most active global diamond exploration program after the majors DeBeers, BHPB
and Rio Tinto. The Company also operates the Klipspringer Diamond Mine in
South Africa and maintains an 18 percent free-carried interest in the Camafuca
Diamond Project in Angola.
For further information: SouthernEra Diamonds Inc.: Mr. Patrick Evans,
President and CEO, or Mr. Howard Bird, Vice President Exploration, Telephone:
(416) 359-9282, Fax: (416) 359-9141, E-mail: inbox@southernera.com,
www.southernera.com
(SDM. SRE)