Cassius Mining : First Hole Successfully Completed

ASX ANNOUNCEMENT

18 February 2022

Criteria

JORC Code explanation

Commentary

Sampling techniques

 Nature and quality of sampling (e.g. cut channels, random chips, or specific specialised

 HQ Diamond core cut and collected in dedicated core trays. QA/QC

industry standard measurement tools appropriate to the minerals under investigation, such as

procedures applied with alternating standards and blanks inserted every

down hole gamma sondes, or handheld XRF instruments, etc). These examples should not be

20 assay samples, and two duplicates inserted every 100 samples.

taken as limiting the broad meaning of sampling.

 Include reference to measures taken to ensure sample representivity and the appropriate



Core half cut and composite sampled every metre to ensure representivity.

calibration of any measurement tools or systems used.

Sample every metre crushed, riffle split and pulverised (85% passing 75

µm) for assay.

 Aspects of the determination of mineralisation that are Material to the Public Report.



Calcium Oxide (CaO) mineralisation and impurities assayed in SGS

Labs, Perth, West Australia - Al2O3, SiO2, Fe2O3, MgO, MnO, CaO, K2O,

TiO2, Na2O, P2O5, V2O5, and Cr2O3) by borate fusion followed by XRF.

 In cases where 'industry standard' work has been done this would be relatively simple (eg

Loss on ignitions (LOI) determined separately by roasting approximately

1gm of sample at 1,000° C for 1 hour in a furnace.

'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



Diamond core drilled to produce HQ core. Following above preparation to

as where there is coarse gold that has inherent sampling problems. Unusual commodities or

mineralisation types (eg submarine nodules) may warrant disclosure of detailedinformation.

ensure representivity, a 100gm charge is submitted for assay for CaO and

above impurities.

Drilling techniques

 Drill type (eg core, reverse circulation, open-hole hammer, rotary air blast, auger, Bangka,

 Diamond core (HQ) drilled for geological / geomorphological / structural

sonic, etc) and details (eg core diameter, triple or standard tube, depth of diamond tails, face-

control using standard tube. Diamond core not oriented (vertical holes).

sampling bit or other type, whether core is oriented and if so, by what method, etc).

Core also structurally logged with density measured.

Drill sample recovery



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

 Measures taken to maximise sample recovery and ensure representative nature ofthe

samples.

 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.

Logging



Whether core and chip samples have been geologically and geotechnically logged to alevel of

detail to support appropriate Mineral Resource estimation, mining studies and metallurgical

studies.

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

photography.



The total length and percentage of the relevant intersections logged.