CriteriaJORC Code explanationCommentarySampling techniques

• Nature and quality of sampling (eg cut channels, random chips, or specific specialised industry standard measurement tools appropriate to the minerals under investigation, such as down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be taken as limiting the broad meaning of sampling.

Diamond core drilling using PQ3 sized core to 143.6m, then using HQ3 sized core to 1,050.4m and NQ3 to end of hole at 1,651m. The core was sampled as half core. The sample intervals were defined by geologists during logging to honour geological boundaries.

• Include reference to measures taken to ensure sample representivity and the appropriate calibration of any measurement tools or systems used.

Sampling and QAQC procedures are carried out using Alkane protocols as per industry best practice.

• Aspects of the determination of mineralisation that are Material to the Public Report. In cases where ‘industry standard’ work has been done this would be relatively simple (eg ‘reverse circulation drilling was used to obtain 1 m samples from which 3 kg was pulverised to produce a 30 g charge for fire assay’). In other cases more explanation may be required, such as where there is coarse gold that has inherent sampling problems. Unusual commodities or mineralisation types (eg submarine nodules) may warrant disclosure of detailed information.

Core was laid out in suitably labelled core trays. A core marker (core block) was placed at the end of each drilled run (nominally 3m) and labelled with the hole number, down hole depth, length of drill run. Core was aligned and measured by tape, comparing back to this down hole depth consistent with industry standards. Half core is sampled with a Corewise automatic core saw.
Gold was determined by fire assay fusion of a 50g charge with an AAS analytical finish.
A multi-element suite was determined using a multi-acid digest with an ICP Mass Spectrometry analytical finish.Drilling techniques

• Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka, sonic, etc) and details (eg core diameter, triple or standard tube, depth of diamond tails, face-sampling bit or other type, whether core is oriented and if so, by what method, etc).

Triple tube diamond drilling with PQ3/HQ3/NQ3 wireline bit producing 83mm diameter (PQ3), 61.1mm diameter (HQ3), and 45.1mm diameter (NQ3) sized orientated core using a Reflex orientation tool.Drill sample recovery

• Method of recording and assessing core and chip sample recoveries and results assessed.

DD – core loss was identified by drillers and calculated by geologists when logging. Core loss was negligible with excellent core recovery.

• Measures taken to maximise sample recovery and ensure representative nature of the samples.

Sample quality is qualitatively logged.
Triple tube coring is used at all times to maximise core recovery for diamond drilling.

• Whether a relationship exists between sample recovery and grade and whether sample bias may have occurred due to preferential loss/gain of fine/coarse material.

There is no known relationship between sample recovery and grade.Logging

• Whether core and chip samples have been geologically and geotechnically logged to a level of detail to support appropriate Mineral Resource estimation, mining studies and metallurgical studies.

DD – all core was laid out in core trays and geologically logged for characteristics such as lithology, weathering, alteration (type, character and intensity), veining (type, character and intensity) and mineralisation (type, character and volume percentage). A brief geotechnical log was also undertaken collecting parameters such as core recovery, RQD, fracture count, and fracture type and orientation.

• Whether logging is qualitative or quantitative in nature. Core (or costean, channel, etc) photography.

Mostly logging was qualitative with visual estimates of the various characteristics. General alteration assemblages were informed by short wave infrared spectral scanning using a Terraspec Halo for qualitative measurements. In addition, magnetic susceptibility data (quantitative) was collected as an aid for logging.
All drill holes were geologically logged into Geobank Mobile, followed by validation before importing into Alkane’s central Geobank database.
All drill holes were logged by qualified and experienced geologists.

• The total length and percentage of the relevant intersections logged.

All drill holes were logged in full.Sub-sampling techniques and sample preparation

• If core, whether cut or sawn and whether quarter, half or all core taken.

Core was sawn in half and half core was submitted for analysis.

• If non-core, whether riffled, tube sampled, rotary split, etc and whether sampled wet or dry.

Not applicable.

• For all sample types, the nature, quality and appropriateness of the sample preparation technique.

Samples were delivered to ALS Minerals Laboratory, Orange NSW. Crushed with 70% <2mm (ALS code CRU-31), split by riffle splitter (ALS code SPL-21), and pulverised 1000grm to 85% <75um (ALS code PUL-32). Crushers and pulverisers are washed with QAQC tests undertaken (ALS codes CRU-QC, PUL-QC).

• Quality control procedures adopted for all sub-sampling stages to maximise representivity of samples.

Internal QAQC system in place to determine accuracy and precision of assays.

• Measures taken to ensure that the sampling is representative of the in situ material collected, including for instance results for field duplicate/second-half sampling.

Non-biased core cutting using an orientation line marked on the core. No duplicate samples were taken.

• Whether sample sizes are appropriate to the grain size of the material being sampled.

Sample sizes are considered appropriate.Quality of assay data and laboratory tests

• The nature, quality and appropriateness of the assaying and laboratory procedures used and whether the technique is considered partial or total.

All samples were analysed by ALS Minerals.
Gold is determined using a 50g charge fused at approximately 1100°C with alkaline fluxes, including lead oxide. The resultant prill is dissolved in aqua regia with gold determined by flame AAS.
Other geochemical elements, samples are digested by near-total mixed acid digest with each element determined by ICP Mass Spectrometry.

• For geophysical tools, spectrometers, handheld XRF instruments, etc, the parameters used in determining the analysis including instrument make and model, reading times, calibrations factors applied and their derivation, etc.

Terraspec Halo was used to measure visible, near-infrared, and short-wave infrared (VIS-NIR-SWIR) regions from 350 to 2500 nm to identify pathfinder alteration minerals. A sample was taken approximately every metre. The measurements were further analysed at ALS using their spectra database.

• Nature of quality control procedures adopted (eg standards, blanks, duplicates, external laboratory checks) and whether acceptable levels of accuracy (ie lack of bias) and precision have been established.

Commercially prepared Certified Reference Materials (CRM) are inserted at 1 in 40 samples. CRM’s are not identifiable to the laboratory.
No field duplicate samples were used.
Laboratory QAQC sampling includes insertion of CRM samples, internal duplicates and screen tests. This data is reported for each sample submission.
Failed standards result in re-assaying of portions of the affected sample batches.Verification of sampling and assaying

• The verification of significant intersections by either independent or alternative company personnel.

Drill data was compiled and collated and reviewed by senior staff. External consultants do not routinely verify data until resource estimation procedures are deemed necessary

• The use of twinned holes.

Twinned holes have not been used for this drilling.

• Documentation of primary data, data entry procedures, data verification, data storage (physical and electronic) protocols.

All primary assay data was received from the laboratory as electronic data files which were imported into sampling database with verification procedures in place. QAQC analysis was undertaken for each laboratory report.
Digital copies of Certificates of Analysis (COA) are stored in a central database with regular (daily) backup.
Data was also verified on import into mining related software.

• Discuss any adjustment to assay data.

No assay data was adjusted.Location of data points

• Accuracy and quality of surveys used to locate drill holes (collar and down-hole surveys), trenches, mine workings and other locations used in Mineral Resource estimation.

Drill hole was laid out using hand-held GPS (accuracy ±2m) then was DGPS surveyed accurately (± 0.1m) by trained surveyors on completion.
Drill holes were surveyed during drilling to maintain drilling direction. The diamond drill hole was surveyed at the end of hole using a Reflex Gyro.

• Specification of the grid system used.

GDA94, MGA (Zone 55).

• Quality and adequacy of topographic control.

A site based digital terrain model was developed from accurate (± 0.1m) survey control by licenced surveyors.Data spacing and distribution

• Data spacing for reporting of Exploration Results.

One very deep drill hole completed approximately 600m vertically below previous drilling. The exploration stage is early, and data spacing is variable with the focus on identifying new zones of mineralisation.

• Whether the data spacing and distribution is sufficient to establish the degree of geological and grade continuity appropriate for the Mineral Resource and Ore Reserve estimation procedure(s) and classifications applied.

The drilling results are at an early exploration stage and is one hole600m below previous drilling.

• Whether sample compositing has been applied.

No sample compositing was used.Orientation of data in relation to geological structure

• Whether the orientation of sampling achieves unbiased sampling of possible structures and the extent to which this is known, considering the deposit type.

The drilling suggests the alteration is pipe shaped and vertical. High grading gold structures (silica-pyrite mineralisation) may exist within the pipe but were not intercepted by this hole.

• If the relationship between the drilling orientation and the orientation of key mineralised structures is considered to have introduced a sampling bias, this should be assessed and reported if material.

It is not thought that drilling direction will bias assay data.Sample security

• The measures taken to ensure sample security.

All samples were bagged in tied numbered calico bags, grouped into larger tied polyweave bags and transported to the laboratory in Orange by courier. Sample submission sheets were delivered with the samples and also emailed to the laboratory. All sample submissions were documented via ALS tracking system and all assays were reported via email.
Sample pulps were returned to site and were stored for an appropriate length of time (minimum 3 years).
The Company has in place protocols to ensure data security.Audits or reviews

• The results of any audits or reviews of sampling techniques and data.

The Company does not routinely have external consultants verify exploration data until resource estimation procedures are deemed necessary.