SYS-CON MEDIA Authors: Sean Houghton, Glenn Rossman, Ignacio M. Llorente, Xenia von Wedel, Peter Silva

News Feed Item

Dunav Announces an Increased Mineral Resource for its Tulare Copper-Gold Project

547 million tonnes grading an average of 0.23% copper and 0.22g/t gold for 2.8 billion pounds of copper and 3.8 million ounces of gold

LONGUEUIL, QUEBEC -- (Marketwired) -- 06/23/14 -- Dunav Resources Ltd. (TSX VENTURE:DNV) (the "Company" or "Dunav") is pleased to announce a mineral resource update for the Kiseljak deposit and a new mineral resource estimate for the Yellow Creek deposit, both part of Dunav's Tulare Copper-Gold Porphyry Project in Southern Serbia.

The combined Kiseljak and Yellow Creek mineral resource estimate, prepared by AMC Consultants Limited (UK) ("AMC"), an independent mining consulting firm, has been estimated at 547 million tonnes grading an average of 0.23% copper ("Cu") and 0.22g/t gold ("Au") in the inferred resource category, for 2.8 billion pounds of copper and 3.8 million ounces of gold, using a 0.15% copper equivalent ("CuEq") cut-off and an open pit mining scenario for Kiseljak and a 0.30% CuEq cut-off and a bulk underground mining scenario for Yellow Creek.

A summary of the Kiseljak and Yellow Creek inferred mineral resource estimate is tabulated below:


----------------------------------------------------------------------------
                         Kiseljak and Yellow Creek Inferred Mineral Resource
----------------------------------------------------------------------------
Deposit      Cut-off   Million    Cu        Cu    Au    Au     S  CuEq  AuEq
            (CuEq %)    Tonnes   (%)  (Bn lbs) (g/t) (Moz)   (%)   (%) (g/t)
----------------------------------------------------------------------------
Kiseljak        0.15       459  0.22       2.2  0.20   3.0   1.9  0.35  0.55
Yellow Creek    0.30        88  0.30       0.6  0.30   0.8   2.8  0.48  0.77
Total                      547  0.23       2.8  0.22   3.8   2.1  0.37  0.59
----------------------------------------------------------------------------

1.  The effective date of the mineral resource estimate is March 31, 2014. 
2.  The copper price used for copper equivalent and gold equivalent
    calculation approximates the mean of monthly average London Metal
    Exchange copper spot prices for April 2013 to April 2014 and is
    $3.00/lb. The gold price used in the copper equivalent and gold
    equivalent calculation approximates the mean of the monthly average spot
    gold prices for April 2013 to April 2014 and is US$1,300/oz. 
3.  Taking into consideration currently available information, possible
    projected throughput rates for the Tulare Copper-Gold Porphyry Project,
    typical mining costs, and a range of processing costs and indicative
    ranges of processing recoveries, Dunav considers that cut-off grades lie
    in the range of 0.15% CuEq (for an open pit mining scenario) to 0.30%
    CuEq (for a bulk underground mining scenario). 
4.  The copper and gold equivalent cut-offs used by Dunav are based on the
    Cu and Au grades, using the following formulas: 
    --  Using a gold price of US$41.80/gramme and a copper price of
        US$66.00/per cent 
    --  Cu_eq = ((Au(i)41.80)+(Cu(i)66.00))/66.00 
    --  Au_eq = ((Au(i)41.80)+(Cu(i)66.00))/41.80 
5.  The resources summarized above for Kiseljak are constrained within a pit
    shell returning maximum undiscounted value based on the following
    assumptions: NSR Cu price of US$3.15/lb (US$3.80/lb spot price less 17%
    for offsite concentrate costs), NSR Au price of US$1305/oz (US$1450/oz
    less 10% for offsite concentrate costs), 75% Au recovery, 90% Cu
    recovery, US$1.80/tonne mining costs, US$7.00/ tonne processing and
    other costs and 45 degree pit slopes. Only transitional and primary
    copper-gold mineralization is considered in the pit shell determination.
6.  The resources summarized above for Yellow Creek are based on the
    following assumptions: NSR Cu price of US$3.15/lb (US$3.80/lb spot price
    less 17% for offsite concentrate costs), NSR Au price of US$1305/oz
    (US$1450/oz less 10% for offsite concentrate costs), 75% Au recovery,
    90% Cu recovery, US$8.10/tonne mining costs (bulk underground mining),
    US$7.00/ tonne processing and other costs. 
7.  Mineral resources, which are not mineral reserves, do not have
    demonstrated economic viability. The estimate of mineral resources may
    be materially affected by environmental, permitting, legal, title,
    taxation, sociopolitical, marketing, or other relevant issues. 
8.  The quantity and grade of reported inferred resources in this estimation
    are uncertain in nature and there has been insufficient exploration to
    define these inferred resources as indicated or measured mineral
    resources. 
9.  Totals and average grades are subject to rounding to the appropriate
    precision. 

Kiseljak

The Kiseljak updated inferred mineral resource has been estimated at 459 million tonnes grading an average of 0.22% copper and 0.20g/t gold for 2.2 billion pounds of copper and 3.0 million ounces of gold, using a 0.15% CuEq cut-off. The key change between the initial mineral resource estimate for the Kiseljak deposit (news release of November 26, 2012) and the current mineral resource is that the updated resource estimate is constrained within a pit shell.

A summary of the updated Kiseljak inferred mineral resource estimate using a range of CuEq cut-offs is tabulated below:


----------------------------------------------------------------------------
Cut-off    Million      Cu        Cu      Au      Au       S    CuEq    AuEq
(CuEq %)    Tonnes     (%)  (Bn lbs)   (g/t)   (Moz)     (%)     (%)   (g/t)
----------------------------------------------------------------------------
0.15           459    0.22       2.2    0.20     3.0     1.9    0.35    0.55
0.20           380    0.24       2.0    0.23     2.8     1.8    0.38    0.60
0.25           302    0.26       1.7    0.25     2.4     1.7    0.42    0.66
0.30           239    0.29       1.5    0.27     2.1     1.7    0.46    0.73
----------------------------------------------------------------------------

See notes above

Yellow Creek

The Yellow Creek inferred mineral resource has been estimated at 88 million tonnes grading an average of 0.30% copper and 0.30g/t gold for 0.6 billion pounds of copper and 0.8 million ounces of gold, using a 0.30% CuEq cut-off. At a 0.30% CuEq cut off, Yellow Creek has a sub-vertical pipe-like morphology, which would be potentially suitable for an underground 'bulk' mining approach.

A summary of the Yellow Creek inferred mineral resource estimate using various cut-offs is tabulated below:


----------------------------------------------------------------------------
Cut-off    Million      Cu        Cu      Au      Au       S    CuEq    AuEq
(CuEq %)    Tonnes     (%)  (Bn lbs)   (g/t)   (Moz)     (%)     (%)   (g/t)
----------------------------------------------------------------------------
0.25           102    0.28       0.6    0.28     0.9     2.8    0.46    0.72
0.30            88    0.30       0.6    0.30     0.8     2.8    0.48    0.77
0.35            71    0.32       0.5    0.32     0.7     3.0    0.52    0.83
0.40            54    0.35       0.4    0.35     0.6     3.0    0.57    0.90
----------------------------------------------------------------------------

See notes above

1. ADDITIONAL INFORMATION

The Tulare Copper-Gold Porphyry Project comprises several porphyry copper-gold targets including Kiseljak, Yellow Creek and Calovica vis South, and also includes the Bakrenjaca carbonate base metal epithermal vein system. All target areas are located within 3 km of the Kiseljak deposit. Dunav controls 100% of this recently identified porphyry cluster, located within the Lece Volcanic Complex.

Data Acquisition


--  The Kiseljak and Yellow Creek resource estimates are based on 131 drill
    holes, as at January 3, 2014. Details of the drilling and sampling
    program, at the time of the database handover, are summarised in the
    table below. 

----------------------------------------------------------------------------
Item               Kiseljak Yellow Creek Yellow Creek Yellow Creek          
                         DD           DD           DT           RC     Total
----------------------------------------------------------------------------
HOLES                    80           39            3            9       131
METERS DRILLED     32,844.2     19,474.1        505.8        1,326    54,150
SAMPLES              32,614       19,472          503        1,314    53,903
AVERAGE                                                                     
RECOVERY                94%          96%          95%            -       95%
ASSAYS (Cu)          32,614       19,472          503        1,314    53,903
ASSAYS (Au)          32,614       19,472          503        1,314    53,903
ASSAYS (S)           32,614       19,472          503        1,314    53,903
BULK DENSITIES        4,664        3,180           65            -     7,909
----------------------------------------------------------------------------

--  Figure 1 displays the drilling carried out to date at Kiseljak and
    Yellow Creek. Figure 2 shows a typical cross section through the
    Kiseljak and Yellow Creek deposits. 
--  Diamond drilling has been carried out such that drill holes are always
    started using PQ core and then reduced to HQ triple tube (HQ3) once
    competent rock has been intersected. The diamond drill core size is kept
    as HQ or HQ3 for as long as possible. Drill core is carefully packed for
    transport to the sample processing facility in Tulare. Once the diamond
    core has been processed (including photography, geotechnical and
    geological logging, magnetic susceptibility measurement, etc.) samples
    are then transported to SGS Bor for sample preparation and analysis. 
--  The average core recovery is 95%. 
--  All drill hole collars were surveyed by differential GPS (DGPS) by staff
    surveyors (registered independent surveyors regularly audit Dunav's
    survey control and procedures). 
--  The diamond drill holes were down-hole surveyed, on average, every 30
    meters using electronic survey equipment. 
--  Kiseljak has been drilled on a nominal 80 meter by 80 meter grid spacing
    while the average drill spacing at Yellow Creek is approximately 120
    meters by 120 meters. 
--  Diamond core sampling has been carried out using Dunav's detailed
    protocols throughout the entire drilling program. A small amount of
    reverse circulation drilling at Yellow Creek has also been utilized, in
    order to drill through barren volcanic cover rocks prior to completing
    the drill holes with diamond drilling. 
--  Density measurements are routinely taken every three meters down hole
    from diamond drill core. The bulk density of the drill core segments
    have been measured at the SGS managed laboratory at Bor using the
    industry standard wax-seal immersion method. Some 4,664 density
    measurements have been taken at Kiseljak along with 3,245 measurements
    at Yellow Creek for a total of 7,909 bulk density values. The density
    data has been used for variographic analysis and ordinary kriging
    estimation in order to estimate the tonnage factors in the block model. 

Assaying


--  All drilling at Kiseljak and Yellow Creek has been routinely assayed for
    copper (Cu), gold (Au), silver (Ag), molybdenum (Mo) and sulphur (S).
    The primary assay laboratory is the SGS-managed facility in Bor. Referee
    assaying has been carried out at Genalysis in Australia, ALS in
    Vancouver, ALS Gura Rosiei in Romania, and ALS Izmir in Turkey. Some
    32,614 one meter samples were used to define the Kiseljak model while
    21,289 samples comprised the Yellow Creek modelling data set. Routine
    quality control sampling and analysis has been completed, as part of
    Dunav's standard QAQC procedures. 

Resource Estimation


--  One-meter composites were used to define lithological boundaries,
    geological boundaries and the mineralized zone outlines. Five-meter
    down-hole composites were used for statistical analysis, variography and
    grade estimation. Some 6,537 composites for Kiseljak and 4,363
    composites at Yellow Creek were produced. Detailed interpretation of the
    geological and grade data has resulted in the modelling of 5 main zones
    of copper-gold mineralization at Kiseljak and 3 zones at Yellow Creek. 
--  Comprehensive variography has been carried out for the Cu, Au, S and
    bulk density data grade for use in the ordinary kriging estimations.
    Where possible, separate variogram models have been constructed for each
    defined mineralized zone, subdivided by oxidation state; completely
    oxidized (COX), partially oxidized (POX) and unoxidized (FRS). 
--  Block models have been prepared using a 20 m cubic parent block size
    with sub-blocking to 10 m and 5 m. 
--  Grade estimation has been completed using ordinary kriging. In some
    domains bulk density has been estimated using ordinary kriging, while in
    others by inverse distance squared weighting. No grade capping was
    applied. 

Grade-Tonnage Reporting


--  The Kiseljak mineral resource was estimated using the Canadian Institute
    of Mining, Metallurgy and Petroleum (CIM) Standards on Mineral Resources
    and Reserves, Definitions and Guidelines prepared by the CIM Standing
    Committee on Reserve Definitions and adopted by CIM Council. The
    resource estimate is within the defined mineralized wireframes,
    constrained by a pit shell and is reported at a range of lower cut-off
    grades. 
--  Dunav believes that possible cut off grades lie in the range of the base
    case of 0.15% CuEq (for an open pit mining scenario) to 0.30% CuEq (for
    a bulk underground mining scenario), based on possible metal prices,
    mill throughputs (7mtpa to 12mtpa), mining, processing and general
    administration costs, metal recoveries (90% for Cu and 75% for Au), mass
    pull factors, concentrate grades, moisture content, offsite concentrate
    costs, payability deductions, treatment and refining charges. 

--  The Kiseljak and Yellow Creek resources have been categorized as
    inferred resources using the CIM Standards on Mineral Resources and
    Reserves, Definitions and Guidelines (November 2010). 

Please see the following link to view all Kiseljak and Yellow Creek drill holes located spatially in three dimensions: http://www.corebox.net/properties/tulare-porphyry-project

2. SAMPLING AND ANALYSIS

Diamond drill core has been prepared at the laboratory facility at Bor and assayed at the SGS managed laboratory at Bor. Diamond drill samples have been assayed for gold by 50 gram fire assay with an AAS finish whilst copper, silver and molybdenum have been analysed using an aqua regia digest with an AAS finish. A one metre sampling interval has been used where possible for the Tulare Porphyry Project diamond drilling program; all diamond core is routinely sampled and sent for assay. Half core is routinely submitted to the laboratory for analysis. Reverse circulation drill samples have been prepared at the laboratory facility at Bor and assayed at the laboratory at Bor. A one meter sampling interval has been used for the Tulare Porphyry Project reverse circulation drilling program. Following Dunav standard quality assurance procedures, a full suite of field and laboratory duplicates and replicates along with internationally accredited standards and blanks, have been submitted with each batch of samples.

3. QUALIFIED PERSONS

The Kiseljak and Yellow Creek resource estimates were undertaken under the supervision of independent qualified person Chris Arnold MAusIMM CP(Geo) of AMC. Mr. Arnold has reviewed and approved the contents of this press release insofar as the Kiseljak and Yellow Creek mineral resource estimates are concerned. The other technical information contained in this press release was prepared and approved by Dr Julian F. H. Barnes, FAusIMM, MAIG, a special consultant to the Company. Dr. Barnes is a 'qualified person' within the meaning of that term under National Instrument 43-101.

AMC is completing a National Instrument 43-101 technical report for the mineral resource estimate to be filed on SEDAR within 45 days of this press release.

About Dunav Resources Ltd.: Dunav Resources is a mineral exploration company focussed on the acquisition, exploration and development of mineral properties in Serbia. Additional information about the Company is available on SEDAR at www.sedar.com and at www.dunavresources.com.

Dunav had approximately $7.1 million in its treasury at March 31, 2014, which it plans to use for the exploration and development of its mineral projects in Serbia. Dunav's issued and outstanding share capital totals 175,319,442 common shares, of which approximately 45.5% is held by Dundee Precious Metals Inc.

Neither the 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 press release.

Cautionary Statement

This press release contains 'forward-looking information' within the meaning of applicable Canadian securities legislation. Forward looking information in this news release includes information with respect to the mineral resource estimate and its potential expansion and upgrade to a higher level of confidence, the timing, location, and results of future work programs, and the geological and economic potential of the Tulare Project, including the possibility of developing an underground operation there.

Mineral resources are not mineral reserves and do not have demonstrated economic viability. Inferred resources have a great amount of uncertainty as to their existence, and as to their economic and legal feasibility. Investors are cautioned not to assume that all or any part of an inferred mineral resource reported in this news release will ever be upgraded to a higher category or to reserves.

Although the Company believes in light of the experience of its officers and directors, current conditions and expected future developments and other factors it considers to be relevant that the expectations reflected in this forward-looking information are reasonable, undue reliance should not be placed on them because the Company can give no assurance that they will prove to be correct. Forward-looking information is subject to known and unknown risks and uncertainties, and depends on assumptions and other factors, all of which may cause actual results or events to differ materially from those anticipated or estimated in such forward-looking information. The forward-looking statements contained in this press release are made as of the date hereof and the Company undertakes no obligations to update publicly or revise any forward-looking statements or information, whether as a result of new information, future events or otherwise, unless so required by applicable securities laws.

Figure 1 is available at the following address: http://media3.marketwire.com/docs/953627a_Fig1.pdf.

Figure 2 is available at the following address: http://media3.marketwire.com/docs/953627a_Fig2.pdf.

More Stories By Marketwired .

Copyright © 2009 Marketwired. All rights reserved. All the news releases provided by Marketwired are copyrighted. Any forms of copying other than an individual user's personal reference without express written permission is prohibited. Further distribution of these materials is strictly forbidden, including but not limited to, posting, emailing, faxing, archiving in a public database, redistributing via a computer network or in a printed form.

Latest Stories
Explosive growth in connected devices. Enormous amounts of data for collection and analysis. Critical use of data for split-second decision making and actionable information. All three are factors in making the Internet of Things a reality. Yet, any one factor would have an IT organization pondering its infrastructure strategy. How should your organization enhance its IT framework to enable an Internet of Things implementation? In his session at Internet of @ThingsExpo, James Kirkland, Chief Ar...
The 3rd International @ThingsExpo, co-located with the 16th International Cloud Expo - to be held June 9-11, 2015, at the Javits Center in New York City, NY - announces that it is now accepting Keynote Proposals. The Internet of Things (IoT) is the most profound change in personal and enterprise IT since the creation of the Worldwide Web more than 20 years ago. All major researchers estimate there will be tens of billions devices - computers, smartphones, tablets, and sensors - connected to th...
In her General Session at 15th Cloud Expo, Anne Plese, Senior Consultant, Cloud Product Marketing, at Verizon Enterprise, focused on finding the right mix of renting vs. buying Oracle capacity to scale to meet business demands, and offer validated Oracle database TCO models for Oracle development and testing environments. Anne Plese is a marketing and technology enthusiast/realist with over 19+ years in high tech. At Verizon Enterprise, she focuses on driving growth for the Verizon Cloud platfo...
The Internet of Things will greatly expand the opportunities for data collection and new business models driven off of that data. In her session at @ThingsExpo, Esmeralda Swartz, CMO of MetraTech, discussed how for this to be effective you not only need to have infrastructure and operational models capable of utilizing this new phenomenon, but increasingly service providers will need to convince a skeptical public to participate. Get ready to show them the money!
"Matrix is an ambitious open standard and implementation that's set up to break down the fragmentation problems that exist in IP messaging and VoIP communication," explained John Woolf, Technical Evangelist at Matrix, in this SYS-CON.tv interview at @ThingsExpo, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
P2P RTC will impact the landscape of communications, shifting from traditional telephony style communications models to OTT (Over-The-Top) cloud assisted & PaaS (Platform as a Service) communication services. The P2P shift will impact many areas of our lives, from mobile communication, human interactive web services, RTC and telephony infrastructure, user federation, security and privacy implications, business costs, and scalability. In his session at @ThingsExpo, Robin Raymond, Chief Architect...
What do a firewall and a fortress have in common? They are no longer strong enough to protect the valuables housed inside. Like the walls of an old fortress, the cracks in the firewall are allowing the bad guys to slip in - unannounced and unnoticed. By the time these thieves get in, the damage is already done and the network is already compromised. Intellectual property is easily slipped out the back door leaving no trace of forced entry. If we want to reign in on these cybercriminals, it's hig...
We are reaching the end of the beginning with WebRTC, and real systems using this technology have begun to appear. One challenge that faces every WebRTC deployment (in some form or another) is identity management. For example, if you have an existing service – possibly built on a variety of different PaaS/SaaS offerings – and you want to add real-time communications you are faced with a challenge relating to user management, authentication, authorization, and validation. Service providers will w...
"ElasticBox is an enterprise company that makes it very easy for developers and IT ops to collaborate to develop, build and deploy applications on any cloud - private, public or hybrid," stated Monish Sharma, VP of Customer Success at ElasticBox, in this SYS-CON.tv interview at DevOps Summit, held Nov 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA.
The term culture has had a polarizing effect among DevOps supporters. Some propose that culture change is critical for success with DevOps, but are remiss to define culture. Some talk about a DevOps culture but then reference activities that could lead to culture change and there are those that talk about culture change as a set of behaviors that need to be adopted by those in IT. There is no question that businesses successful in adopting a DevOps mindset have seen departmental culture change, ...
WebRTC defines no default signaling protocol, causing fragmentation between WebRTC silos. SIP and XMPP provide possibilities, but come with considerable complexity and are not designed for use in a web environment. In his session at @ThingsExpo, Matthew Hodgson, technical co-founder of the Matrix.org, discussed how Matrix is a new non-profit Open Source Project that defines both a new HTTP-based standard for VoIP & IM signaling and provides reference implementations.
The 4th International DevOps Summit, co-located with16th International Cloud Expo – being held June 9-11, 2015, at the Javits Center in New York City, NY – announces that its Call for Papers is now open. Born out of proven success in agile development, cloud computing, and process automation, DevOps is a macro trend you cannot afford to miss. From showcase success stories from early adopters and web-scale businesses, DevOps is expanding to organizations of all sizes, including the world's large...
DevOps Summit 2015 New York, co-located with the 16th International Cloud Expo - to be held June 9-11, 2015, at the Javits Center in New York City, NY - announces that it is now accepting Keynote Proposals. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long development cycles that produce software that is obsolete...
The definition of IoT is not new, in fact it’s been around for over a decade. What has changed is the public's awareness that the technology we use on a daily basis has caught up on the vision of an always on, always connected world. If you look into the details of what comprises the IoT, you’ll see that it includes everything from cloud computing, Big Data analytics, “Things,” Web communication, applications, network, storage, etc. It is essentially including everything connected online from ha...
The security devil is always in the details of the attack: the ones you've endured, the ones you prepare yourself to fend off, and the ones that, you fear, will catch you completely unaware and defenseless. The Internet of Things (IoT) is nothing if not an endless proliferation of details. It's the vision of a world in which continuous Internet connectivity and addressability is embedded into a growing range of human artifacts, into the natural world, and even into our smartphones, appliances, a...