Astral Mining Corporation

Published : February 02nd, 2010

Announces Encouraging Metallurgical Testwork on Drill Samples from Jumping Josephine

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Tuesday, February 02, 2010

 

Astral Announces Encouraging Metallurgical Testwork on Drill Samples from Jumping Josephine

 

Vancouver, BC - Astral Mining Corporation (TSX-V AA, AA.WT) ("Astral" or "the Company") is pleased to report results of preliminary metallurgical testwork on three composite samples from the Jumping Josephine Gold Property, Southern British Columbia. First-pass flotation, gravity concentration and cyanide leach methods were all successful at recovering gold. Flotation tests averaged 98% gold recovery, combined gravity and leach tests averaged 94% gold recovery and whole ore leach tests averaged 86% gold recovery with the medium and high grade whole ore leach composites averaging 97% gold recovery. Significant additional testing is recommended to evaluate metallurgical behaviour at different grind sizes and test variability from within the mineralized zone. Astral is very encouraged by the gold recoveries achieved from the preliminary testwork.

Testwork was conducted by G&T Metallurgical Services Ltd of Kamloops, British Columbia and was designed to provide a preliminary indication of Jumping Josephine's amenability to standard modern gold extraction methods. This work represents a small scale, early stage study on three samples totalling 100 kilograms(kg) of mineralized material from the JJ Main stockwork zone. Results from the study will help to aid in selection of a suitable flowsheet for treating mineralized material during bulk sample processing and will form a basis for further metallurgical testwork. The completion of a 10,000 tonnes(t) bulk sample permit application at Jumping Josephine is underway.

Discussion of Testwork

Low, medium and high grade composites were sourced from coarse reject material stored at Astral's Castlegar facility, having been returned from earlier analyses on halved HQ-sized drill core. Samples were selected from specific drill intervals to best reflect three levels of mineralization observed in the JJ Main stockwork zone. The low-grade composite (0.6 grams per tonne (g/t) gold) was composed of weakly quartz veined intervals with generally <1% sulphide mineralization, medium (3.3 g/t gold) and high-grade (12.0 g/t gold) composites were drawn from strongly quartz veined stockwork intervals with up to 5% sulphides including arsenopyrite and sphalerite. Visible gold flakes have been observed in intervals similar to the ones sampled to make the high-grade composite.

Characterization of Samples

Testwork was completed on three samples, low (0.6 g/t gold), medium (3.3 g/t gold) and high-grade (12.0 g/t gold). Head grade assay work was completed on duplicate samples from each of the three composites by screened metallic analysis using a 150 micron screen. Medium and high-grade samples returned a high level of screen oversize gold indicating the presence of coarse gold. Additional assays were conducted on four size fractions from each composite. Sizing work from the medium and high-grade samples showed elevated gold in the 0.42-0.82 millimeter size fraction whereas the low-grade sample showed a more uniform distribution.

A Bulk Mineral Analysis (BMA) was conducted using QEMSCAN technology on a single sample from the medium grade composite indicating approximately 2% sulphide minerals (1.14% arsenopyrite, 0.69% pyrite and 0.1% sphalerite). The host rock was composed primarily of quartz (57.0%), muscovite (22.2%) and feldspars (15.1%).

Bond Ball Mill Work Index Test was conducted on the Medium Grade sample and returned a Work Index of 17.2 kw-hr/tonne.

Metallurgical Testwork

A single rougher flotation test was completed at the bench scale using 2kg charges from each of the three composites. Gold recoveries of between 97.6% and 98.7% in rougher concentrates containing 7-8% of the feed mass were recorded from the three samples at a primary grind size of 150 microns. Concentrates from the low and medium grade composites assayed 11.6g/t and 28.4g/t gold respectively and would probably require upgrading before sale. In addition, silver and arsenic both reported to the rougher concentrates. The levels of arsenic may affect concentrate quality and further testwork is required to determine if flotation would be a suitable method for processing the JJ Main ore.

Gravity concentration and cyanidation tests were conducted on 4kg samples from each of the three composites. A Knelson concentrate was produced and upgraded by panning. Knelson and pan tails were then combined and leached with cyanide. Gravity recoveries of 74% and 74.4% were returned from the medium and high grade samples with the low grade composite returning 39.5%. Total gold recoveries from gravity and leached tails were 85.1% from low grade, 97.7% from medium grade and 99% from the high grade composite.

Bottle roll tests returned 63.4%, 96.0% and 98.6% recoveries over 48 hours from the low, medium and high-grade composites, respectively.

Composite samples used in this study were derived from coarse reject material returned from previously analysed HQ diamond core intervals. Samples comprising the three composites were labeled and bagged under the supervision of Astral's Project Geologist Dale Brittliffe, P.Geo., a Qualified Person as defined in National Instrument 43-101. Samples were submitted to G & T Metallurgical Services Ltd at 2957 Bowers Place, Kamloops, B.C., Canada. Testwork was conducted and reviewed by G & T's professionally accredited metallurgical engineers and geoscientists. The resulting report entitled "Metallurgical Assessment of the Jumping Josephine Deposit, Astral Mining Corporation KM2397" is posted on Astral's website at this link.

Astral has earned a 60% interest in the JJ Project from Kootenay Gold Inc. and has an option to earn the remaining 40% (see December 16th 2009 news release).

Astral Mining Corporation is a Canadian company engaged in the exploration and development of precious metal properties in North America. By focusing on exploration in mining-friendly districts, the Company minimizes the political and social risks encountered in many other parts of the world. With a new gold discovery at the Company's Jumping Josephine Gold Project in Southern British Columbia and an experienced technical team and seasoned management, Astral is poised to leverage this expertise into early exploration success. Further details on Astral Mining Corporation and its high-quality portfolio of exploration projects can be found at www.astralmining.com.

ON BEHALF OF THE BOARD
"Manfred Kurschner"

Mr. Manfred Kurschner, President & CEO
Astral Mining Corporation


For further information on Astral please contact Manfred Kurschner, President & CEO, at 604-641-1315, or by email info@astralmining.com, or visit the Company's web site at www.astralmining.com.


The TSX Venture Exchange has not reviewed and does not accept responsibility for the adequacy or the accuracy of this release. Cautionary Note to US Investors: This news release may contain information about adjacent properties on which we have no right to explore or mine. We advise U.S. investors that the SEC's mining guidelines strictly prohibit information of this type in documents filed with the SEC. U.S. investors are cautioned that mineral deposits on adjacent properties are not indicative of mineral deposits on our properties. This news release may contain forward-looking statements including but not limited to comments regarding the timing and content of upcoming work programs, geological interpretations, receipt of property titles, potential mineral recovery processes, etc. Forward-looking statements address future events and conditions and therefore involve inherent risks and uncertainties. Actual results may differ materially from those currently anticipated in such statements.

Press Release Number 3 2010

 


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Astral Mining Corporation

EXPLORATION STAGE
CODE : AA.V
ISIN : CA0463494033
CUSIP : 046349 40 3
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Astral Mining is a silver and gold exploration company based in Canada.

Astral Mining holds various exploration projects in Canada and in Mexico.

Its main exploration properties are JUMPING JOSEPHINE, HONEYMOON BC and BARRIERE RIDGE in Canada and LOS CRESTONES PROPERTY in Mexico.

Astral Mining is listed in Canada, in Germany and in United States of America. Its market capitalisation is CA$ 769 500 as of today (US$ 584 949, € 523 939).

Its stock quote reached its highest recent level on July 13, 2007 at CA$ 8.70, and its lowest recent point on September 21, 2015 at CA$ 0.02.

Astral Mining has 25 650 000 shares outstanding.

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Annual reports of Astral Mining Corporation
2008 Annual report
Annual Report 2007
Financings of Astral Mining Corporation
11/14/2007 Private Placement Oversubscribed
3/21/2007Private Placement Of Flow-Through Units With The Mineralfiel...
Project news of Astral Mining Corporation
9/7/2011Drilling Started on Los Crestones in Mexico
5/11/2011(Jumping Josephine)Announces Initial Resource Estimate at Jumping Josephine
3/25/2011(Los Crestones Property)Commences Exploration Program at Los Crestones Gold-Silver P...
3/8/2011(Barriere Ridge)Signs Option on Barriere Ridge Silver-Gold Project, Southern...
6/22/2010(Jumping Josephine)Commences Summer Exploration Program on Jumping Josephine Go...
5/3/2010(Jumping Josephine)Files Independent 43-101, Begins 2010 Field Program
3/16/2010(Jumping Josephine)Completes Infill Aeromagnetic Survey at Jumping Josephine an...
2/2/2010(Jumping Josephine)Announces Encouraging Metallurgical Testwork on Drill Sample...
12/17/2009(Jumping Josephine)To Acquire 100% Interest In Jumping Josephine Kootenay To Re...
10/29/2009(Jumping Josephine)Prepares Bulk Sample Permit Application for Jumping Josephin...
11/18/2008(Jumping Josephine)and Kootenay Intersect new Stockwork Zone and Extend Main Di...
6/4/2008(Bear Creek)Gold Summit Reports Drill Assay Results From Carolinas
11/14/2007(Jumping Josephine (jj))Announces First Results from Phase II Drilling on the Jumpin...
9/11/2007(Jumping Josephine (jj))Final Drill Results of Phase I at its JJ Gold Discovery & An...
7/12/2007(Jumping Josephine (jj))Drills 7.01 g/t Gold over 19 metres on Jumping Josephine Gol...
7/10/2007Intersects 1.98 m of 17.8 g/t Gold at Saluda Gold Project, S...
6/14/2007(Jumping Josephine (jj))Drills 9.95 g/t Gold over 10m on Jumping Josephine Gold Proj...
6/6/2007(Jumping Josephine (jj))Update on Astral's Jumping Josephine Gold Project Drilling P...
6/5/2007(Jumping Josephine (jj)) Options Property Adjacent to Jumping Josephine Gold Project
5/24/2007Announces High-Grade Gold Assay, Saluda, South Carolina
3/20/2007(Jumping Josephine (jj))To Drill The Jumping Josephine; Sets 2007 Exploration Budget
Corporate news of Astral Mining Corporation
2/5/2013Orex and Astral Announce Final Court Order Approving Arrange...
2/1/2013Orex and Astral Announce Results of Annual General and Speci...
1/21/2013Announces Annual General and Special Meeting
12/10/2012Orex and Astral Announce Signing of Arrangement Agreement
12/10/2012Orex and Astral Announce Signing of Arrangement Agreement
10/15/2012Orex and Astral Announce Merger by Way of Plan of Arrangemen...
12/12/2011PRESS RELEASE - New Astral Results in Mexico
12/12/2011re=3A New Astral Mining results from Mexico
7/7/2011Gitennes Reports Strong Set of Urumalqui Assay Results
5/24/2011Gitennes Reports More Results from Urumalqui Project - Peru
5/6/2008and Kootenay Form JV and Announce 2008 Exploration Program f...
4/9/2008to raise $1,800,000 CDN
2/6/2008 Starts Drilling on the Bear Creek Gold Prospect, North Caro...
11/5/2007Closes $1,021,000 Financing
9/28/2007to Raise Total of $1.25 Million Financing.
9/27/2007Mineralfields Group Invests Another $500,000 In Astral Minin...
9/25/2007Increases Offering to $750,000
9/21/2007To Raise $500,000
9/11/2007Announces Commencement of Phase II Drilling at the Jumping J...
4/30/2007Commences Airborne Geophysical Survey on Chenier Copper-Gold...
4/27/2007Raises $1,250,000.00
4/5/2007Closes Financing with MineralFields Group
3/15/2007JV with Gold Summit
2/22/2007Acquires Additional Gold Properties In Nevada
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