BRAÚNA 3 KIMBERLITE NI 43-101
MINERAL RESOURCE INDICATED: 1…
BRAÚNA 3 KIMBERLITE NI 43-101 MINERAL RESOURCE
INDICATED: 1.3 MILLION TONNES AND 186,000 CARATS
INFERRED: 4.8 MILLION TONNES AND 971,000 CARATS
TORONTO: January 20, 2011 – Vaaldiam Mining Inc. (‘Vaaldiam’ or the
‘Company’) (TSX: VAA)
is pleased to announce the National Instrument 43-101 compliant
mineral resource estimate for the
Braúna 3 kimberlite pipe (‘B3’) at the Braúna Property in Bahia
State, Brazil.
The mineral resource estimate includes Indicated Resources to a
depth of approximately 40 metres
of 0.63 million tonnes at a grade of 24.58 carats per hundred
tonnes (‘cpht’) in the south lobe, and
0.67 million tonnes at a grade of 4.72 cpht in the north lobe of
the kimberlite. Inferred Resources to
a depth of approximately 200 metres are estimated to contain 3.75
million tonnes at a grade of 24.58
cpht in the south lobe and 1.04 million tonnes at a grade of 4.72
cpht in the north lobe.
An independent Qualified Person (‘QP’) from ACA Howe International
Limited (‘Howe’) calculated
the mineral resource estimate.
The following table summarizes the details of the NI 43-101 mineral
resource as prepared by Howe:
Table 1: Mineral Resource Statement for the B3 Kimberlite, North
and South Lobes
Resource
Category
Lobe
Dry
Tonnes
(x1,000)
Diluted
Grade
(cpht)
Carats
(x1,000)
Grade (cpht)
Price
(US$/carat)
Indicated 667 4.72 31 4.72
Inferred
North
1,042 4.72 49 4.72
98
Indicated 629 24.58 155 24.58
Inferred
South
3,753 24.58 922 24.58
339
• Indicated Resource defined from surface to the 235mRL
• Grade used is the diluted diamond grade obtained from the
individual bulk samples.
• Mineral Resources are not accumulated within an optimized pit
shell.
• Mineral Resources which are not mineral reserves do not have
demonstrated economic viability. The estimate of mineral resources
may be
materially affected by environmental, permitting, legal, title,
taxation, socio-political, marketing or other relevant issues.
• The volume of the North and South Lobes includes internal
dilution.
• The quantity and grade of reported Indicated and Inferred
Resources in this estimate are conceptual in nature. There is no
guarantee that all
or any part of the mineral resource will be converted into a
mineral reserve.
• Due to rounding, figures may not add up to the totals shown.
• A 1 millimetre bottom cut-off is used for the Mineral
Resource.
In the Indicated Category, 83.3% of the carats are derived from the
south lobe and 16.7% from the
north lobe. In the Inferred Category, 95.0% of the carats are
derived from the south lobe and 5.0%
of the carats are derived from the north lobe. Diamond values
reported are the average estimated
sales price of two independent diamond valuations of 1,013.75
carats of rough diamonds recovered
from the south lobe and 34.74 carats from the north lobe (as
reported on December 2, 2010). The
diamond valuation was completed on November 1, 2010 using Antwerp
market data.
2
The mineral resource estimated prepared by Howe includes kimberlite
volume, density and tonnage
data collected during the bulk sampling program in 2010 which
involved the collection of three
surface samples totaling 4,909.3 dry tonnes of kimberlite. Samples
1 and 2 were taken from the
south lobe and sample 3 from the north lobe. A total of 5,064
diamonds with a total weight of
1,057.39 carats were recovered from the three bulk samples, with
4,904 diamonds totaling 1,021.97
carats from the south lobe and 160 diamonds with a total weight of
35.42 carats from the north lobe.
This mineral resource estimate uses a 1.0 millimetre bottom diamond
size cut-off and considers all
kimberlite to a depth of 200 metres below surface, where drilling
has determined that the kimberlite
remains open at depth.
Project Overview
The two-hectare B3 pipe is open vertically and laterally. Vaaldiam
plans to further explore B3 and
the entire property with the objective of increasing the diamond
resources. It has commissioned a
Preliminary Economic Assessment for B3, which is located in easily
accessible terrain just 7 km
south of the town of Nordestina. Nordestina has excellent
infrastructure, grid power, services and
skilled personnel. B3 is one of 22 kimberlite occurrences
discovered so far on the property.
Vaaldiam has performed exploration work on only five occurrences,
including the Braúna 8 (‘B8’)
kimberlite dike situated 5 km north of the B3 pipe. Mini-bulk
samples from this 4.5 metre-wide dike
produced 170 diamonds weighing 19.37 cts, including a 7.97 carat
white octahedron stone, from
approximately 46 dry tonnes, inferring a recovered grade of 42
cpht. The B8 occurrence is a
vertically oriented kimberlite dike forming a 1,000 metre-long
section of the northwest trending dike
system. Recent exploration conducted in the vicinity of the B8 dike
has confirmed that this dike is
linked to the Braúna 21 occurrence. Mini-bulk sampling of the one
hectare Braúna 7 pipe, situated 1
km to the east of the B3 pipe, resulted in the recovery of 30
diamonds with a total weight of 3.87
carats from approximately 87 tonnes of kimberlite with an estimated
recovered diamond grade of 4.5
cpht.
Vaaldiam commissioned the NI 43-101 mineral resource estimate for
the B3 kimberlite pursuant to
its obligation under NI 43-101 to prepare and file technical
reports and as such, the technical report
is the sole responsibility of Vaaldiam.
Mr. Daniel C. Leroux (BSc, P.Geo.) of Howe is the independent QP
who supervised the preparation
of the mineral resource estimate for the B3 kimberlite. Mr. Leroux
has 16 years of direct experience
with diamond projects located in Canada, Africa, Europe and South
America, including managerial
responsibilities for all various exploration stage diamond projects
from conceptual grassroots
exploration projects to bulk sampling and pre-feasibility studies
on advanced diamond projects and
has completed mineral resource estimates on both primary and
alluvial diamond deposits. Mr.
Leroux also has extensive diamond processing experience of various
types of process plant
technology and recovery plant technology utilized in both primary
and alluvial diamond mining
operations worldwide.
Ms. Katharine Masun (HBSc, MSc, MSA, P.Geo.) of Vaaldiam and Mr.
Douglas Roy (BEng,
MASc, P.Eng.) of Howe were closely involved in the mineral resource
estimation process for the B3
kimberlite. Ms. Masun has more than 13 years of experience in
diamond exploration and kimberlite
geology, having been involved in projects located in Canada, India,
South America and Africa, from
grassroots to advanced stages of exploration and evaluation. Mr.
Roy has worked as a mining
engineer for more than 10 years, which has included estimation of
resources and reserves for
precious metals, base metals and industrial minerals and well as
participation in pre-feasibility and
3
feasibility studies. Howe consents to the statement of Indicated
and Inferred Mineral Resources
contained herein.
This release has been reviewed by Katharine Masun P.Geo., who is a
qualified person under
National Instrument 43-101. For additional information regarding
Vaaldiam please visit
www.vaaldiam.com, or contact Robert Jackson, President and Chief
Executive Officer at