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Dalradian Resources Inc
Symbol DNA
Shares Issued 216,590,571
Close 2016-05-05 C$ 1.04
Market Cap C$ 225,254,194
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Dalradian increases Curraghinalt's 43-101 M+I resources

2016-05-05 13:05 ET - News Release

Mr. Patrick Anderson reports

DALRADIAN ANNOUNCES NEW MINERAL RESOURCE STATEMENT FOR CURRAGHINALT, INCLUDING A 109% INCREASE IN MEASURED & INDICATED GOLD OUNCES

Dalradian Resources Inc. has released an updated mineral resource statement on the Curraghinalt gold deposit in Northern Ireland, including a 109-per-cent increase in gold ounces contained in the measured and indicated categories compared with the 2014 resource. As more drilling has been done and the confidence of the resources has increased, the grade has also increased. This updated mineral resource statement, along with reconciliation studies and test stoping, will support the continuing feasibility study to be delivered in the second half of 2016.

The mineral resources by category are summarized in the attached table.

  MINERAL RESOURCE STATEMENT, CURRAGHINALT GOLD PROJECT, NORTHERN IRELAND,  
                 SRK CONSULTING (CANADA) INC., MAY 5, 2016                 

                                                                    Contained
Resource category                            Million       Grade         gold 
(cut-off grade of five grams per tonne)       tonnes     (g/t Au)     (ounces)

Measured                                        0.03       26.99       25,000
Indicated                                       5.58       11.53    2,069,000
Measured and indicated                          5.61       11.61    2,094,000
Inferred                                        7.13       10.06    2,306,000

(1) Mineral resource statement prepared by SRK Consulting (Canada) in   
accordance with National Instrument 43-101 with an effective date of
May 5, 2016.           
(2) Mineral resources are not mineral reserves and have not demonstrated     
economic viability. The estimate of mineral resources may be materially    
affected by environmental, permitting, legal, marketing or other relevant 
issues. The mineral resources have been classified according to the CIM    
(Canadian Institute of Mining, Metallurgy and Petroleum) definition
standards for mineral resources and mineral reserves (May, 2014).
(3) All figures have been rounded to reflect the relative accuracy of the    
estimates.                                                                 
(4) The mineral resources are reported at a cut-off grade of five grams per
tonne gold, based on a gold price of $1,200 (U.S.) per ounce and 95-per-cent
gold recovery.         

The mineral resources are reported undiluted. In order to arrive at an estimate of the grade and the ounces of gold contained in a minimum vein thickness of one metre, a conservative approach to dilution was applied, using a grade of zero gram per tonne for wall rock and on a vein-by-vein basis. The results are summarized in the attached table.

 CURRAGHINALT DILUTED QUANTITIES AND GRADE ESTIMATES (NOT A MINERAL RESOURCE
                      STATEMENT), AS AT MAY 5, 2016                            

Category                                  Million       Grade    Contained gold 
(cut-off grade of five grams per tonne)    tonnes     (g/t Au)          (ounces)

Measured and indicated                       5.45       10.40         1,823,000
Inferred                                     6.93        8.81         1,964,000

(1) The reader is cautioned that the figures presented in this table should not
be misconstrued with a mineral resource statement. They are presented only to
show the impact of dilution.                                       
(2) Diluted to a minimum vein thickness of one metre. Wall rock dilution
assumed to be barren (zero gram per tonne gold).

Patrick F.N. Anderson, Dalradian's chairman and chief executive officer, commented:

"The new mineral resource statement, based on more than 130,000 metres of infill drilling, will support a feasibility study to be completed later this year. These higher confidence ounces will be complemented by the results of both an ongoing grade reconciliation study (second quarter) and our test stoping program (third quarter). Based on the high-grade and first-world jurisdiction, Curraghinalt remains one of the best undeveloped gold projects on the global stage."

The Curraghinalt gold deposit is an orogenic gold system consisting of a series of moderately to steeply dipping, structurally controlled, high-grade gold-bearing quartz-carbonate veins. The deposit remains open in all directions. The mineral resource statement incorporates information from 175 infill drill holes (51,215 metres), as well as underground samples from new and existing drifts along the T17, Sheep Dip, 106-16, V-75, Slap Shot and No. 1 vein zones. The measured mineral resources are higher grade than the indicated and inferred mineral resources. The infill drilling was successful in increasing the geological confidence of the mineral resources, with measured and indicated mineral resources increasing from one million ounces to 2.09 million ounces.

The mineral resource model does not consider the C-veins, unless within modelled D-vein intervals, or any other potential gold contribution from surrounding materials. The model includes five new veins (Slapshot, Sperrin, Causeway, Grizzly and V-55) not previously modelled. The diluted quantities and grade estimates assume that the wall rock is barren (zero gram per tonne of gold). Modelling is under way as part of the feasibility study to estimate the effect of the C-veins on diluted grade.

Borehole assay data were composited to 0.5-metre downhole length. In total, 16 veins were modelled as explicit wire frames from the composite data. Over all, 4 per cent of the composites were capped. Capping varied by vein zone and by data type, and was based on grade distribution and statistical analysis. A global variogram model for gold with a range up to 95 metres by 95 metres by 10 metres was used for grade estimation.

A block model with parent cell sizes of five metres by five metres by five metres was chosen, with subcells at 0.5-metre resolution. Subcells were assigned the same grade as the parent cell. Block model gold grades were estimated using ordinary kriging, informed by composite data and three estimation runs with progressively relaxed search ellipsoids and data requirements. The first pass required between five to 12 composites, with a search up to 95 metres by 95 meters by 15 metres (variogram range) oriented parallel to the vein. The second pass required between four to 15 composites, but permitted a search up to two times the variogram range. The final pass required between two to 15 composites within a search radii up to six times the variogram range, with the aim to populate all blocks within the vein. In all passes, no more than three composites from one borehole are permitted. Each domain was estimated using a hard boundary approach that considers only the composites from that domain. The influence of underground face samples was limited to within a 10-metre radii.

Appropriate validations were undertaken to ensure that the block model adequately represents the informing drilling data. Vein block volumes were converted into tonnage using a relationship established between specific gravity and sulphur estimates. Calculated vein specific gravity varies from 2.51 to 3.06, with an overall average of 2.77. All waste blocks were assigned a specific gravity of 2.73.

The block model was classified using the following criteria:

  • The measured category includes blocks located within 10 metres from underground development;
  • The indicated category includes blocks estimated within the variogram range, by a minimum of two boreholes, but more often with at least three boreholes;
  • The inferred category includes all other estimated blocks within a vein wire frame not previously classified as measured or indicated.

The automated classification was subsequently manually adjusted to define regular boundaries between categories.

The company intends to file a technical report pursuant to National Instrument 43-101 to support the updated mineral resource statement on SEDAR and on the company's website within 45 days of this news release.

The mineral resource statement was prepared in accordance with NI 43-101 under the supervision of Dr. Jean-Francois Couture, PGeo (APGO No. 0197), and Dr. Oy Leuangthong, PEng (PEO No. 90563867), both full-time employees of SRK Consulting (Canada) and independent qualified persons as defined by National Instrument 43-101. The qualified persons have read and approved the information contained in this press release.

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