Tanzanian Royalty Announces 94.50% Average Gold Recovery from Preliminary Metallurgical Test Work at Kigosi Project
June 02 2010 - 2:14PM
Business Wire
Tanzanian Royalty Exploration Corporation is pleased to announce
that preliminary metallurgical test results show high gold
recoveries from the in-situ quartz rubble-bed associated with the
Company's Kigosi Gold Project in Tanzania.
During the previously completed RC drilling programs within the
Luhwaika Prospect Area at Kigosi, a substantial gold-mineralized
surface gravel resource was delineated on a 30 metres x 100 metres
grid system. This zone is currently being evaluated through
close-spaced pitting and trenching.
Highlights from the metallurgical test work conducted on two
bulk samples recovered from Luhwaika Prospect Area included:
Respective head grades for gold averaged 1.77g/t and 1.59g/t;
respective gold grading analyses indicated that 89% and 84% of the
gold reports to the 75 micron fraction; heavy liquid separation
(HLS) analyses indicated that the gold in both samples is highly
amenable to upgrading by gravity separation techniques, with 93%
and 84% of the gold respectively reporting to HLS sinks; gravity
separation analyses indicated that the majority of gold can be
extracted using gravity separation, with 91% and 98% of the gold
recoverable as free gold for the two samples; the source of the
gold is proximal with trace amounts of pyrite and; no refractory
issues with respect to the grade mineralization have been
identified.
The objectives for this study were twofold. The first involved a
grading analysis (assay by size) that helped establish the
distribution of gold across various size fractions; the second
objective was to understand the nature and mode of occurrence of
the gravity recoverable gold as part of the preliminary
establishment of cost effective and practical means for the
recovery of gold from this potentially economic gravel deposit.
The preliminary metallurgical test work was completed using two
bulk samples of surface rubble material weighing approximately 45
kg each. The samples were stage-crushed to achieve 100% passing
3.32 mm. After that 20 kg of the crushed material from each sample
was subsequently milled to 50% passing -75micron mesh. Grading
analysis was conducted on a 1 kg split of each sample (50%
-75microns) of which six size fractions (+212 micron,
-212/+106micron, -106/+75micron, - 75/+53micron, -53/+25micron
& -25micron) were individually produced and assayed
independently.
Concentrates and tailings from 2 x 4 kg of each sample generated
by gravity separation using a Falcon Gravity Separator were assayed
in order to calculate the overall gold distribution.
"The high degree of liberation and availability of the gold
indicated by these results is very encouraging," said Joseph
Kahama, the President of Tanzanian Royalty.
"While the results of this early work cannot be considered
definitive, these tests have demonstrated that the Luhwaika surface
rubble assessed to date is amenable to producing excellent gold
recoveries using off the shelf gravity-based ore dressing
processes," he stated.
The preliminary metallurgical test is the result of the ongoing
exploration and economic assessment of the Luhwaika gold discovery.
Current exploration is focused on pitting and trenching to
accurately quantify potentially economic surface rubble tonnages
and grades for the RC-delineated rubble bed outline.
The preliminary metallurgical test work program was conducted by
Mineralogist L. L. Coetzee of SGS Laboratory in South Africa under
the supervision of Senior Mineralogist Solly J. Theron.
The planning, execution and monitoring of quality control
programs are under the supervision of Mr. Peter T. Zizhou, P.Geo,
Riaan van der Westhuizen, the Company’s Senior Vice President and
Mr. Fritz Verheem, the Company’s Mining Consultant. Mr. Zizhou is a
qualified person with SACNASP (Reg. No.400028/08) as defined by
National Instrument 43-101.
Tanzanian Royalty utilizes an industry standard QA/QC protocol
with respect to sampling procedures. Blanks and certified reference
standards are inserted into the sample stream to monitor laboratory
performance and duplicates of pulps and bulk rejects are also used
to monitor laboratory performance.
Additional information and public documents about Tanzanian
Royalty Exploration Corporation can be viewed at the Company's
website at: www.TanzanianRoyaltyExploration.com.
Respectfully Submitted,“Joseph Kahama”Joseph K.
KahamaPresident
For further information, please
contact Investor Relations at 1-800-811-3855Visit our website:
www.TanzanianRoyaltyExploration.com
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Securities and Exchange Commission limits disclosure for U.S.
reporting purposes to mineral deposits that a company can
economically and legally extract or produce. We use certain terms
on this news release, such as “reserves”, “resources”, “geologic
resources”, “proven”, “probable”, "measured", "indicated", or
"inferred" which may not be consistent with the reserve definitions
established by the SEC. U.S. Investors are urged to consider
closely the disclosure in our Form 20-F, File No. 001-32500.
You can review and obtain copies of these filings from the SEC's
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Certain information presented in this release may constitute
“forward-looking statements” within the meaning of the Private
Securities Litigation Reform Act of 1995. Such
forward-looking statements are based on numerous assumptions, and
involve known and unknown risks, uncertainties and other factors,
including risks inherent in mineral exploration and development,
which may cause the actual results, performance, or achievements of
the Company to be materially different from any projected future
results, performance, or achievements expressed or implied by such
forward-looking statements. Investors are referred to our
description of the risk factors affecting the Company, as contained
in our Form 20-F, File No. 001-32500, for more information
concerning these risks, uncertainties, and other factors.
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