Nuuk, 2013-09-18 07:50 CEST (GLOBE NEWSWIRE) --
NunaMinerals A/S (COPENHAGEN: NUNA.CO / NUNA.DC) is pleased to announce the results of regional surface exploration at their exclusively owned Vagar Gold Prospect in South Greenland, where the company announced the discovery of exceptionally high grade gold mineralisation last month. Concurrent with follow-up drilling, NunaMinerals has completed a major surface exploration program comprising soil and scree sediment, hard rock and channel sampling of bedrock. This program has resulted in the identification of several new gold targets (Figure 1), whilst considerably extending the dimensions of existing targets within the 435 km2 Vagar licence, which is located only 25 kilometres from an existing gold mine.
To the present time, NunaMinerals has focussed on the ‘Greater Amphibolite Ridge’ (GAR) area (Figure 1 & 2). A highly anomalous cluster of gold anomalies within scree sediment defines the GAR area. Continued scree sediment sampling during 2013 has confirmed a substantial extension to the GAR target area, which now exceeds 3 x 4 kilometres (>12 km2) and remains open in all directions. The >12 km2 GAR sits within a larger envelope of anomalous bedrock and sediment gold occurrences exceeding 96 km2 (excluding isolated gold occurrences within the wider licence area).
Commenting upon the Vagar Gold Prospect, Ole Christiansen, CEO of NunaMinerals stated: “This year’s exploration activities at Vagar have produced the best results in our company’s history. The identification of the strongest in-sediment gold anomalies discovered in Greenland, combined with the exceptionally high grade gold mineralisation identified from channel sampling at Amphibolite Ridge demonstrates the enormous potential of the Vagar Gold Project. We now have several new targets, which we will be advancing during 2014, subject to funding. With Vagar as our flagship, NunaMinerals has firmly established itself as the premier gold explorer in Greenland.”
Drilling to date (totalling 1916 metres; 8 holes) has so far tested the Vein 1 and Vein 2 gold mineralised systems, which constitute only a minor portion of the GAR area (Figure 2). However it is the ‘M2 Zone’ and its continuation, ‘Christiansen Ridge’ within the GAR area, which represent the strongest in-sediment gold anomalies in Greenland. Christiansen Ridge is a newly discovered target extending a minimum of 500 metres, with exceptionally high levels of gold identified in scree sediment (up to 1.3 g/t). Reconnaissance sampling in these areas during 2013 has been able to demonstrate in-situ hard rock gold grades exceeding 10 g/t at both targets. The company is now defining a drill program to test these new zones during 2014, subject to funding.
Based upon the orientation of the gold mineralised panel intersected in drilling, combined with structural information from outcropping mineralisation, it is possible that the GAR target continues towards the southwest into the ‘Bismuth Valley’ and ‘UFO Mountain’ targets (Figure 1). This would comprise a total strike length of approximately 8 kilometres. Infill sampling is planned to further test the continuity of the gold mineralisation between individual targets. The gold mineralised structures are inferred to be second-order structures related to a major regional northeast trending shear zone with sinistral displacement, which crosses the Vagar licence immediately northwest of the GAR target area (Figure 1).
Figure 1: Map of the Niaqornaarsuk Peninsula (within the 435 km2 Vagar Licence) showing individual gold targets, defined by in-situ gold mineralisation exceeding 10 g/t gold. Black triangles show the localities where surface exploration was conducted by NunaMinerals during the 2013 field season, samples from previous field programs shown by coloured symbols. The dashed red circle shows the extent of the Greater Amphibolite Ridge target area as defined by scree sediment gold anomalies (remains open in all directions); Purple dashed line represents a regional shear zone mapped by the Geological Survey of Denmark and Greenland (GEUS).
Bismuth Valley is a >1400 metre long target which has historically yielded Heavy Mineral Concentrate (HMC) samples up to 7.8 g/t gold, as well as gold bearing quartz veins (5-10 g/t gold). Historical sediment samples from the area contained high concentrations of bismuth, which NunaMinerals has recently demonstrated to be a powerful pathfinder element for gold in the region. Subsequent sampling of the altered granodiorites from Bismuth Valley has shown them to be elevated in gold, which was not previously recognised. Hence further work at this target is also planned for 2014, subject to funding.
Several discrete zones of gold mineralisation have been defined along the northern extension of Amphibolite Ridge, namely the ‘Øresund’ and ‘Femøren’ zones (Figure 2). These zones are characterised by packages of weakly rusty, silicified and partially sulphidised granodiorites, which have yielded up to 12.3 g/t gold at Femøren and 14.4 g/t at Øresund (with several samples returning >1 g/t). The hard rock assays are supported by strong sediment gold anomalies. The mineralised outcrops at these targets are amenable to channel sampling. This will be conducted during early 2014, prior to drill testing, subject to funding.
Figure 2: The Greater Amphibolite Ridge (GAR) target area showing the positions of individual zones with in-situ gold grades exceeding 10 g/t (up to 2533 g/t during 2013 sampling at Vein 2). The drill tested zone is indicated by dashed lines, demonstrating the limited extent of the reconnaissance drilling at Vagar to date.
Several previously unknown quartz veins (up to 0.5 metres in width) returning gold grades between 5 and 10 g/t were discovered at the ‘Crew Zone’, supported by strong sediment gold anomalies. Silicified and sulphidised granodiorites from the Crew Zone have yielded up to 2 g/t gold.
In addition to the channel samples previously announced (announcement 15/2013; 28th August) from the Vein 2 gold mineralised system, channel sampling was also conducted at the ‘Quartz Swarm’ target (Figure 1). This resulted in two intercepts from two separate quartz veins (10 g/t over 0.42 metres and 2.9 g/t over 0.5 metres), however in contrast with other targets, the host granodiorites at the Quartz Swarm do not display significant gold enrichment.
Geological mapping at Amphibolite Ridge by NunaMinerals during 2012 revealed that the gold mineralised granitic rocks (granodiorites and granites) had intruded into existing quartz diorites and gabbros. This is interpreted as the roof zone of a gold fertile granitic pluton(s). Reconnaissance drilling and detailed surface sampling profiles have revealed that contacts between rocks of differing rheological properties and/or geochemistry appear to be an important locus for gold mineralisation at Amphibolite Ridge. Several previously untested contacts (interpreted as roof zones) were tested for gold during the 2013 field season, a number of which have yielded gold. For example, the contact between granodiorites and gabbroic xenoliths at the M2 Zone has yielded samples up to 10.4 g/t gold; and the contact between granodiorites and felsic volcanics near the ‘LGM Showing’ has yielded samples up to 10.2 g/t gold.
Anomaly maps for sediment and hard rock assays resulting from the 2013 field season will be available on the company’s website shortly (www.nunaminerals.com).
Advanced petrological and lithogeochemical studies support the presence of Intrusion Related Gold Systems (IRGS) at Vagar
The study undertaken by Helvetica Exploration Services GmbH (Switzerland) supports both petrologically and geochemically, NunaMinerals’ earlier hypothesis that the gold mineralisation at Vagar conforms to an Intrusion Related Gold System (IRGS) model, with strong geological similarities to IRGS deposits such as the Fort Knox gold mine (>5 Moz Au reserves and resources) in the Tintina Gold Province of Alaska. The company considers the >150 kilometre long, under explored ‘Nanortalik Gold Belt’ of South Greenland to be exceptionally prospective for deposits conforming to IRGS, particularly along the southern margin of the Julianehåb Batholith. Significantly the potential for IRGS was unrecognised by earlier explorers in the region.
Several characteristics of the gold mineralisation at Amphibolite Ridge, and the wider Niaqornaarsuk Peninsula conform to the classification criteria of IRGS, including the presence of widespread gold mineralisation of several variable styles, elevated concentrations of specific metals (e.g. tungsten, bismuth and tellurium), and diagnostic alteration assemblages.
The acquisition of combined petrological and lithogeochemical data forms an important part of NunaMinerals’ characterisation of the gold mineralisation at the Amphibolite Ridge discovery zone. It will add to the comprehensive exploration model that the company is developing to apply elsewhere within the Nanortalik Gold Belt of South Greenland, for improved targeting of other gold mineralised granitic intrusions, as well as facilitating continued exploration at Amphibolite Ridge. Furthermore the studies provide a base line on which NunaMinerals can proceed with metallurgical testwork, hyperspectral studies and environmental base line studies for Amphibolite Ridge as the company continues to drive the Vagar Project forwards.
The Vagar Gold Project
Limited reconnaissance drilling at Vagar during 2012 and 2013, testing several gold bearing quartz veins and hydrothermally altered, gold mineralised granitic host rocks was successful in demonstrating wide gold intersects. For example the ‘discovery hole’ (VAG-12-02) yielded 79.0 metres with 0.96 g/t gold (including 54.7 metres @ 1.33 g/t, including 23.3 metres @ 2.47 g/t gold) with visible gold in two intersections.
Four channel sample profiles (a continuous sampling method using rock saws), completed during 2013 across the Vein 2 gold mineralised structure all intersected high grade gold mineralisation including some exceptional intervals, yielding up to 13 metres @ 70.1 g/t gold (with visible gold identified in several of the samples). Rock grab samples from the same structure have returned up to 2533 g/t gold, which constitutes the highest grade ever to be reported from the Vagar licence area.
The Vagar Gold Project is located only 25 kilometres from existing mining infrastructure at Nalunaq gold mine (operated by Arctic Mining), with the Amphibolite Ridge target only 8 kilometres from an ice-free deep water fjord facilitating year round access.
The information in this announcement has been reviewed by Dr Denis M. Schlatter, MSc., Ph.D., EurGeol, a Qualified Person for the technical information presented under National Instrument 43-101 standards, and a consulting geologist to NunaMinerals A/S.
NunaMinerals A/S is Greenland’s leading company in the exploration of precious and base metals as well as strategic metals. Firmly rooted in Greenland, the company is well positioned to exploit the mineral potential of one of the world’s few remaining unexplored regions. The geology of Greenland has a number of similarities with that of long-established mining countries such as Canada, South Africa and Australia, which all have substantial mineral deposits of gold, platinum, nickel and copper, among other commodities. Setting up partnerships that would bring further technical and financial expertise to the development of the company’s exploration prospects is a key element of NunaMinerals’ business model. NunaMinerals began operations in 1999 and is headquartered in Nuuk, Greenland. The company is listed at NASDAQ OMX Copenhagen A/S under the symbol “NUNA” (Copenhagen: NUNA.CO). For more information, please visit our website: www.nunaminerals.com.
On behalf of the board
Ole Christiansen, CEO & Birks Bovaird, Chairman
Forward-looking statements contained in this announcement, including descriptions of NunaMinerals’ exploration and development projects, strategy and plans, as well as expectations for future revenue and earnings, reflect NunaMinerals’ current views and assumptions with respect to future events and are subject to certain risks, uncertainties and assumptions. There are many factors that may cause actual results achieved by NunaMinerals to differ materially from expectations for future results and expectations that may be expressed in or form an assumption of such forward-looking statements. Such factors include risks related to exploration, development and mining activities, uncertainties related to the results of NunaMinerals’ exploration and development projects, including risks of delays or closure of projects, price falls, currency fluctuations and changes in concession terms, legislation and administrative practices, as well as competition risk and other unforeseen factors. If one or more of such risks or factors of uncertainty were to materialise, or should one or more of the statements provided prove to be incorrect, actual developments may differ materially from the forward-looking statements contained in this announcement. NunaMinerals is not under any duty to update the forward-looking statements contained in this announcement or to adjust such statements to actual results, except as may be required by law.
For further information:
Ole Christiansen, CEO, phone: +299 36 20 01, mobile: +299 55 18 57 firstname.lastname@example.org