Novo Announces Favorable Gravity Recovery Results for Beatons Creek and Files Technical Report
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VANCOUVER, BC / TheNewswire / October 14, 2015 - Novo Resources Corp. (TSX-V: NVO; OTCQX: NSRPF) ("Novo" or the "Company") is pleased to announce encouraging test results from advanced metallurgical test work performed on a bulk sample of gold-bearing conglomerate from its Beatons Creek project, Western Australia. Gravity gold recovery of 87% was attained on a 3 tonne bulk sample provided to Nagrom & Co.'s ("Nagrom") Perth laboratory. Testing produced a low mass yield, 2.5%, concentrate, and the calculated head grade of the sample was determined to be 4.35 gpt Au. Test work was performed under the guidance of DRA Pacific Pty Ltd ("DRA"), also Perth-based.
Test work included a component of scrubbing to attempt to segregate boulders and cobbles away from matrix material. While results indicate that barren boulders over approximately 40 cm in diameter can effectively be screened out, boulders under 30 cm and smaller cobbles prove less amenable to separation from matrix material. Nevertheless, screening out +40 cm boulders prior to crushing and grinding could eliminate considerable mass.
Novo now envisions a milling process in which +40 cm boulders are screened out across a grizzly with all of the undersize being crushed, ground and subjected to gravity-only gold recovery. Although previous test work indicates most gold (~70%) is recoverable at a coarse grind size (~0.6 mm), Nagrom's test work has demonstrated that it is cost effective to grind to 75 microns (P80) to achieve enhanced gravity recovery utilizing Knelson concentrators. Novo has recently tasked DRA with designing and costing a mill based on the general guidelines described above. Operating costs will also be evaluated in detail. This work is expected to take 4-6 weeks and will be a major component of future economic study.
Gravity Recoverable Gold - LeachWell Comparison
Coarse reject material from fifteen 50 kg trench ("costean") samples was submitted to Gekko Systems, Ballarat, Victoria for gravity recoverable gold ("GRG") test work (please refer to the Company's news releases dated April 21 and April 29, 2015 for original LeachWell results from these samples as well as a discussion of sampling procedures). Although this work provided some useful metallurgical information, these tests were primarily conducted to enable a comparison between LeachWell results, a chemical method of gold separation and analysis, and GRG results, a physical method of gold separation and analysis. Results are presented in a nearby table.
Although direct comparisons between individual samples show fairly wide variation (-21.3 - 99.0%), the overall dataset compares reasonably well with GRG results averaging about 8.5% higher than their LeachWell counterparts. This information gives confidence to the Company's use of large samples and LeachWell analyses for determining gold grades at the Beatons Creek project.
The weighted average GRG recovery of these fifteen samples is 75.3%. Given that most samples were crushed to a very coarse size, 0.6 mm, and passed across a gravity separation table, this recovery can be considered encouraging since it can be considered "non-optimized" with respect to metallurgical recovery. As noted in the table below, three of the fifteen samples were subjected to finer grinding to around 120 microns and enhanced gravity recovery using a Falcon concentrator.
Comparison of Gravity Recoverable Gold to Original LeachWell Analyses | ||||
Costean Sample | Genalysis - Weighted 3 kg LeachWell Au Result (gpt) | Gekko - Gravity Recoverable Gold Calculated Head Grade (gpt) | Gekko GRG Compared with Genalysis LeachWell (%) | Non-optimized GRG Recovery @ 0.6 mm Crush (%) |
BCC15-009* | 1.58 | 1.53 | -2.9 | 54.9 |
BCC15-016 | 1.03 | 2.04 | 99.0 | 71.4 |
BCC14-219/BCC14-579 | 7.98 | 8.90 | 11.5 | 78.8 |
BCC15-063 | 8.78 | 10.03 | 14.3 | 87.0 |
BCC14-601 | 1.19 | 1.04 | -12.6 | 63.9 |
BCC14-341 | 4.61 | 7.46 | 62.0 | 38.5 |
BCC14-559 | 3.59 | 3.93 | 9.6 | 75.2 |
BCC14-628/BCC14-630 | 18.01 | 19.81 | 10.0 | 89.4 |
BCC14-116 | 2.94 | 2.57 | -12.7 | 76.1 |
BCC14-314 | 3.33 | 3.08 | -7.6 | 74.2 |
BCC14-621 | 9.75 | 7.67 | -21.3 | 70.0 |
BCC15-081* | 3.47 | 4.14 | 19.3 | 71.7 |
BCC14-451 | 3.93 | 3.21 | -18.3 | 73.1 |
BCC14-072 | 4.74 | 5.61 | 18.3 | 61.4 |
BCC14-418* | 2.25 | 2.69 | 19.8 | 89.8 |
Average grade of above: | Average grade of above: | Average increase in grade: | Weighted average recovery: | |
5.14 | 5.58 | 8.5 | 75.3 | |
Gravity recoverable gold tests are non-optimized and were performed by tabling after crushing the 50 kg sample to 0.6 mm except for samples marked with * for which, after tabling, the table tails were ground to around 120 microns (P100) and passed through a Falcon concentrator. |
"We are very pleased to have this favourable metallurgical data in hand," commented Dr. Quinton Hennigh, President, CEO and director of Novo Resources Corp. "Our advanced metallurgical test work shows us a clear path to a simple gravity-only process scheme for our Beatons Creek project. We now look forward to estimating the capital and operating costs for this scenario in an economic study. Gravity recovery is perhaps the cheapest and simplest form of gold recovery."
Filing of Technical Report
The Company is also pleased to announce that it has filed a technical report prepared pursuant to National Instrument 43-101 ("NI 43-101") related to its September 16, 2015 news release announcing the resource estimate for its Beatons Creek Gold Project, Western Australia. The independent technical report, entitled "NI 43-101 Technical Resource Report, Beatons Creek Gold Project, Pilbara Region, Australia" (the "Technical Report"), with an effective date of August 31, 2015 and an issue date of October 1, 2015, was prepared for Novo by Arnand van Heerden (PGeo, SACNASP, MAusIMM) of Tetra Tech, Golden, Colorado. Mr. Van Heerden is a qualified person as defined under NI 43-101. The Technical Report is available through the Internet under the Company's profile on the System for Electronic Document Analysis and Retrieval (SEDAR) website at www.sedar.com (filing date: October 13, 2015) and on the Company's website at www.novoresources.com.
Quality Control and Quality Assurance
Costean samples discussed in this news release were collected under the supervision of Dr. Quinton Hennigh, Novo's Chief Executive Officer, President and director. Costean samples were submitted to Genalysis Laboratories, Perth, WA for analysis. Preparation entails crushing the entire sample to -2 mm and pulverizing a 9 kg split to P80 -100 microns. A 3 kg split of pulverized material is subjected to the LeachWell technique, an accelerated CN leach (6 hour leach time) then subjected to analysis by mass spectrometry.
Coarse reject material from 15 costean samples was submitted to Gekko Systems, Ballarat, Victoria for GRG testing. These samples were crushed to 0.6 mm (P80) and passed across gravity separation tables from which multiple streams (3-5) of concentrate were collected. The tails from three samples (see annotation in the above table) were ground to around 120 microns and fed through a Falcon concentrator.
Dr. Quinton Hennigh, the Company's Chief Executive Officer, President and director and a qualified person as defined under NI 43-101, has approved the technical contents of this news release.
About Novo Resources Corp.
Novo's focus is to evaluate, acquire and explore gold properties. Indirect subsidiaries of Novo hold a 100% interest in the core of the Beatons Creek project and a 70% interest in approximately 1,800 square kilometers surrounding Beatons Creek and at nearby Marble Bar in the Pilbara region, Western Australia. For more information, please contact Leo Karabelas at (416) 543-3120 or e-mail leo@novoresources.com.
On Behalf of the Board of Directors,
Novo Resources Corp.
"Quinton Hennigh"
Quinton Hennigh
CEO and President
Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.
Forward-looking information
Some statements in this news release contain forward-looking information (within the meaning of Canadian securities legislation) including, without limitation, statements as to the expected receipt of results from various exploration and testing activities. Forward-looking statements address future events and conditions and, as such, involve known and unknown risks, uncertainties and other factors which may cause the actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the statements. Such factors include, without limitation, customary risks of the mineral resource exploration industry as well as Novo having sufficient cash to fund the planned drilling and other exploration activities.
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