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Press release from CNW Group

Marathon Gold Reports NI- 43-101 Resource Estimate Update for the Golden Chest Mine

Thursday, January 17, 2013

Marathon Gold Reports NI- 43-101 Resource Estimate Update for the Golden Chest Mine07:00 EST Thursday, January 17, 2013TORONTO, Jan. 17, 2013 /CNW/ - Marathon Gold Corporation ("Marathon" or the "Company") (TSX: MOZ) today announced the updated NI-43-101 compliant Resource Estimate for the Golden Chest Mine in north eastern Idaho, USA. The Resource Estimate is an essential component of the project's development and is a key milestone for Marathon. The Golden Chest Mine is owned 50% by Marathon Gold Corporation (MOZ: TSX) and 50% by New Jersey Mining Company ("NJMC"), and NJMC is the operator."The increase in resources at the Golden Chest Mine is very good. The Global M&I resource has increased from the previous resource in contained ounces by 73% to 254,000 ounces and the grade has increased from 1.47 grams per tonne to 1.71 grams per tonne, an increase of 16.3%.  The open pit M&I resource has increased by 84% to 223,000 ounces and the grade has increased from 1.35 grams per tonne to 1.59 grams per tonne, an increase of 17.8%. The first underground resource has also been estimated, which is a milestone for the project. The mineralization is open to depth and along strike to the north where historic grades of 17 grams per tonne were mined. There is a lot of potential remaining to expand the resource at the Golden Chest Mine," stated Phillip Walford, President and CEO of Marathon."For Marathon Gold, the 50% of the Golden Chest Mine resource attributable to Marathon, when combined with the resources at our 100% owned Valentine Project, gives Marathon a total attributable M&I resource of 803,000 ounces at a grade of 2.11 grams per tonne, and the total attributable Inferred resource for Marathon is 237,000 ounces at a grade of 2.09 grams per tonne. This is a large increase in one year and most of it is in the lower risk M&I categories," said Mr. Walford.Golden Chest Mine Resource Estimate UpdateDescriptionMeasuredIndicatedMeasured andIndicatedInferred    Global Resource @ 0.4 g/t gold cut-offIdaho Vein System (Main body)1Tonnes1,261,0003,291,0004,552,0003,065,000Grade (g/t Au)1.521.731.671.48Ounces of gold62,000183,000245,000145,000Other Veins2Tonnes075,00075,000797,000Grade (g/t Au)03.693.693.04Ounces of gold09,0009,00078,000Grand Total1+2Tonnes1,261,0003,366,0004,627,0003,862,000Grade (g/t Au)1.521.771.711.80Ounces of gold62,000192,000254,000223,000    In Open Pit @ 0.3 g/t gold cut-offIdaho Vein System+Other VeinsTonnes1,317,0003,054,0004,371,0002,369,000Grade (g/t Au)1.471.641.591.33Ounces of gold62,000161,000223,000101,000    Underground Potential @ 2.0 g/t gold cut-offIdaho Vein System+Other VeinsTonnes0196.600196,600738,300Grade (g/t Au) of gold019,60019,60082,500The 0.4 g/t gold cut-off grade for the Global Resource numbers has not been constrained by economic parameters and it may be compared to the initial resource estimate of March, 2012.The mineral resource estimate reported at 0.3 g/t gold cut-off grade for a potential Open Pit is based on a number of parameters and assumptions including a gold price of US$1,455 per troy ounce, 92% metallurgical gold recovery, mining costs of US$2.00/tonne and process costs of US$9.50/tonne, General & Administrative costs of US$2.00/tonne and environmental rehabilitation costs of US$0.20 per tonne treated.The 2.0 g/t gold cut-off grade for a potential Underground mine was suggested by Marathon Gold Corporation and New Jersey Mining Corporation based on their experience. The mineral resource estimate is reported at that cut-off grade.The quantity and grade of reported Inferred mineral Resources in this estimation are uncertain in nature and there has been insufficient exploration to define the Inferred mineral Resources as Indicated or Measured mineral Resources. It is uncertain if further exploration will result in upgrading them to Indicated or Measured mineral Resource categories.The mineral Resources in this news release were estimated using the Canadian Institute of Mining, Metallurgy and Petroleum (CIM), 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 effective date of this mineral Resource Estimate is January 16, 2013.Global Mineral Resource parameters:a.     Estimations are based on sample composites of ~1.5 meters for both underground channels and drill holes. Grade capping was applied to a single outlier sample grading 864 g/t Au. Based on detailed statistical analysis combined with information from drill hole logs, no further grade capping was deemed necessary.b.     A 0.40 g/t Au cut-off grade was applied for the 3D deposit modeling, in some cases lower grade material was included in order to get a reasonable shape in the interpretations.c.     A constant specific gravity of 2.66 tonnes per cubic meter was used.d.     Resources were modeled using 3D interactive modeling backed by sectional interpretation.e.     The database for the Golden Chest deposit comprised a total of 24,140 meters of drilling (169 DDH and 26 RC), and 186 meters of sampling in 160 underground channels.f.     The mineralized zones at the Golden Chest Mine extend approximately 1,250 meters along strike.  The Open Pit Mineral Resource has been constrained by a conceptual open pit shell that includes Resources to a maximum depth of approximately 250 meters.g.     Grade estimation was carried out using Ordinary Kriging interpolation for the Idaho Vein System (main body) and Inverse Distance Cubed for the other veins.h.     Resource estimation for the main body is based on a block model with block dimensions of 5 meters East-West, 5 meters North-South and 5 meters in height.  Grade estimation for the other veins estimations was based on a block model with block dimensions of 1 meter East-West, 1 meter North-South and 1 meter in height.i.     Measured mineral resources include all mineralized blocks with a minimum of 3 drill holes within ~25 meter radius of the centroid of each block, and clean-up of isolated minor volumes.j.     Indicated mineral resources include all mineralized blocks with a minimum of 3 drill holes within ~50 meter radius of the centroid of each block, and clean-up of isolated minor volumes.k.     Inferred mineral resources include all the remaining mineralized blocks to the extent of the wireframe constraints.  All blocks were interpolated with data from a minimum of 2 drill holes.l.     Resource estimation for the potential underground mine was based on a cut-off grade of 2.0 g/t gold.  This Resource has been estimated in compliance with National Instrument 43-101 standards and a corresponding Technical Report will be filed under the Company's profile on SEDAR within the time allotted. The Micon staff responsible for this Resource Estimate are Messrs. Charley Murahwi, M.Sc., P. Geo., FAusIMM and Alan J. San Martin, MAusIMM(CP). Both are Qualified Persons as defined in NI 43-101, and are independent of Marathon Gold Corporation and New Jersey Mining Company. Micon acknowledges that it has read this news release and confirms the accuracy of it.Phillip Walford P.Geo, President and CEO of Marathon Gold, is Marathon's Qualified Person in compliance with National Instrument 43-101 with respect to this release. Mr. Walford has reviewed the contents for accuracy and has approved this new release on behalf of Marathon.Golden Chest MineThe Golden Chest Mine is located two miles east of Murray, Idaho within the gold belt of the Coeur d'Alene Mining District. The mine has over 3,900 m of underground workings and has the permits necessary to drill and operate on the deposit. The property includes 24 patented mining claims and 70 unpatented mining claims covering 515 hectares. The patented claims that cover the mine workings have mineral and surface rights enabling the Joint-Venture to work easily on the Mine property.About Marathon Gold CorporationMarathon Gold Corporation is a North American gold resource development company, with projects located in the mining friendly province of Newfoundland and Labrador, the prolific Coeur d'Alene Mining District of Idaho and the historic gold rich Greenhorn District of Oregon, USA.  Marathon has a project pipeline consisting of early stage exploration to advanced resource development projects. Marathon is continually evaluating new gold resource development projects of merit that are located within the Americas.  Marathon's focused and low-cost approach to exploration and resource development has an established record of delivering rapid growth.  For more information visit: www.marathon-gold.comCAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION Except for statements of historical fact relating to Marathon Gold Corporation, certain information contained herein constitutes "forward-looking statements". Forward-looking statements include statements that are predictive in nature, depend upon or refer to future events or conditions, or include words such as "expects", "anticipates", "plans", "believes", "considers", "intends", "targets", or negative versions thereof and other similar expressions, or future or conditional verbs such as "may", "will", "should", "would" and "could". We provide forward-looking statements for the purpose of conveying information about our current expectations and plans relating to the future and readers are cautioned that such statements may not be appropriate for other purposes. By its nature, this information is subject to inherent risks and uncertainties that may be general or specific and which give rise to the possibility that expectations, forecasts, predictions, projections or conclusions will not prove to be accurate, that assumptions may not be correct and that objectives, strategic goals and priorities will not be achieved. These risks and uncertainties include but are not limited to those identified and reported in Marathon Gold Corporation's public filings, which may be accessed at  Other than as specifically required by law, we undertake no obligation to update any forward-looking statement to reflect events or circumstances after the date on which such statement is made, or to reflect the occurrence of unanticipated events, whether as a result of new information, future events or results otherwise.  SOURCE: Marathon Gold CorporationFor further information: Marathon Gold Corporation Christopher Haldane Investor Relations Manager Tel: 1-416-987-0714 Email: