VANCOUVER, British Columbia, March 28, 2018 (GLOBE NEWSWIRE) -- North Arrow Minerals Inc. (TSX-V:NAR) is pleased to report final diamond recoveries from composite mini-bulk samples of four units within the Q1-4 kimberlite at the Naujaat Diamond Project, Nunavut. Final diamond recoveries are summarized in the table below.
| Number of Diamonds per Sieve Size (mm Square Mesh Sieve) | ||||||||||
| Q1-4 kimberlite Unit | Sample | 0.300 | 0.425 | 0.600 | 0.850 | 1.18 | 1.70 | 2.36 | Total | Total |
| Weight | -0.425 | -0.600 | -0.850 | -1.18 | -1.70 | -2.36 | -3.35 | Stones | Carats | |
| Dry Kg | +0.85 mm | |||||||||
| A61 | 1425.1 | 8 | 60 | 45 | 33 | 4 | 3 | 0 | 153 | 0.678 |
| A48a | 1086.5 | 3 | 35 | 37 | 16 | 1 | 3 | 0 | 95 | 0.421 |
| A28 | 2192.5 | 0 | 29 | 40 | 10 | 9 | 2 | 1 | 91 | 0.679 |
| A88 | 470.0 | 0 | 2 | 7 | 4 | 0 | 0 | 0 | 13 | 0.042 |
The samples reported in this release were collected as part of the 2017 delineation drill program, details of which were reported in a North Arrow news release dated September 12, 2017. The samples were composited from drill core in the field based on observed lithological units and submitted for processing using a combined dense media separation / caustic fusion process intended to recover diamonds greater than 0.425 mm. The largest diamond was recovered from unit A28 and weighs 0.25 carats. The purpose of these composite samples is to provide diamond recovery information to supplement results from smaller drill core samples submitted for microdiamond (caustic fusion) analyses, including recovery of diamonds greater than 0.106 mm. The diamond recoveries reported in this news release will be used to support incoming microdiamond sample results expected over the next eight weeks.
The diamond results reported in this release are based on dense media separation (DMS) and caustic fusion processing and diamond extraction work completed by Microlithics Laboratories, Thunder Bay, Ontario, and I&M Morrison Geological Services Ltd, Delta, British Columbia, both independent mineral process and sorting laboratories. The samples were processed at Microlithics through a 1.5 tonne per hour DMS plant configured to recover diamonds retained on a +0.425 mm square mesh sieve. Crushed kimberlite drill core was fed directly into the DMS plant. All +10 mm material was subsequently reduced through staged, secondary jaw and cone crushing circuits and re-introduced into the plant. DMS concentrates were upgraded by caustic fusion processes and the resultant residues were shipped to I&M Morrison where they were sieved and fractions retained on a +0.425 mm Tyler (square mesh) sieve were sorted for diamonds. Some sieved fractions were further upgraded using paramagnetic separation techniques prior to diamond extraction. Quality assurance protocols, security and actual operating procedures for the processing, transport and recovery of diamonds conform to industry standard Chain of Custody provisions. 97.2% of inserted synthetic diamond spikes were recovered during processing and diamond extraction, including clean up materials. As part of North Arrow’s ongoing QA/QC programs, DMS tails, sorted caustic fusion residues, and other materials are subject to audit. Any significant changes in recovered diamond contents will be reported when available.
North Arrow’s diamond exploration programs are conducted under the direction of Kenneth Armstrong, P.Geo. (ON), President and CEO of North Arrow and a Qualified Person under NI 43-101. Mr. Armstrong has reviewed the contents of this press release.
About North Arrow Minerals
North Arrow is a Canadian based exploration company focused on the identification and evaluation of diamond exploration opportunities in Canada. North Arrow’s management, board of directors and advisors have significant successful experience in the Canadian diamond industry. In addition to evaluating the Naujaat Project, North Arrow is also conducting exploration drilling programs this spring at the Loki and LDG Projects in the NWT and planning to drill test newly discovered diamondiferous kimberlite at the Mel Project (NU). The Company is also awaiting till sample results from its Pikoo (SK) Project and maintains a 100% interest in the Hope Bay Oro Gold Project (NU), located approximately 3 km north of TMAC Resources’ new Doris Gold Mine.
North Arrow Minerals Inc.
/s/ “Kenneth A. Armstrong”
Kenneth Armstrong
President and CEO
For further information, please contact:
Ken Armstrong
Tel: 604-668-8355 or 604-668-8354
Website: www.northarrowminerals.com
Neither the TSX Venture Exchange nor its Regulation Services Provider accepts responsibility
for the adequacy or accuracy of this release.
This news release contains "forward-looking statements" including but not limited to statements with respect to North Arrow’s plans, the estimation of a mineral resource and the success of exploration activities. Forward-looking statements, while based on management's best estimates and assumptions, are subject to risks and uncertainties that may cause actual results to be materially different from those expressed or implied by such forward-looking statements, including but not limited to: risks related to the successful integration of acquisitions; risks related to general economic and market conditions; closing of financing; the timing and content of upcoming work programs; actual results of proposed exploration activities; possible variations in mineral resources or grade; failure of plant, equipment or processes to operate as anticipated; accidents, labour disputes, title disputes, claims and limitations on insurance coverage and other risks of the mining industry; changes in national and local government regulation of mining operations, tax rules and regulations. Although North Arrow has attempted to identify important factors that could cause actual results to differ materially from those contained in forward-looking statements, there may be other factors that cause results not to be as anticipated, estimated or intended. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. North Arrow undertakes no obligation or responsibility to update forward-looking statements, except as required by law.