Yarri Project
(Gold)
The Yarri Project comprises 31 granted licences and applications, including two awaiting ballot, covering approximately 1,405km2. The Project is approximately 150km northeast of Kalgoorlie between the Keith-Kilkenny Tectonic Zone (KKTZ) and the Laverton Tectonic Zone (LTZ).

Hobbes Prospect
The Hobbes Prospect is within Licence E31/1117 (OreCorp 80%) covering a portion of the Edjudina Greenstone Belt, Pig Well Graben and north-northwest trending KKTZ within the Kurnalpi Terrane of the Archaean Eastern Goldfields Province. The gold mineralisation within the licence is preferentially hosted within the older volcaniclastic, andesite and carbonated mafic units commonly associated with porphyry intrusives.
Historical drilling intersected primary mineralisation beneath the supergene zones. OreCorp completed a maiden reverse circulation (RC) drilling program of 17 holes at the Hobbes Prospect designed to confirm and test the strike length, depth potential and lateral continuity of both the supergene and primary gold mineralisation and returned encouraging results. Better intercepts include:
- HOBRC0001 12m @ 1.49g/t gold from 58m; Incl. 4m @ 3.39g/t gold from 64m
- HOBRC0002 22m @ 3.22g/t gold from 45m
- HOBRC0009 9m @ 2.85g/t gold from 176m; Incl. 3m @ 5.13g/t gold from 182m (end-of-hole)
- HOBRC0014 30m @ 1.08g/t gold from 47m; Incl. 14m @ 1.25g/t gold from 47m and 8m @ 1.27g/t gold from 68m
Gold mineralisation at Hobbes is typically hosted
within a shallow, sub horizontal supergene blanket generally 45-65m below
surface with a vertical thickness up to 30m (using a 0.25 g/t lower cut). This blanket
lies above primary mineralisation, hosted in subvertical north-northwest
striking structures in chlorite-carbonate-silica altered intermediate
epiclastic volcanic rocks.
The drill program outlined broad zones of supergene
mineralisation at least 1km along strike and >400m across strike and open in
all directions.

Statesman Well Prospect
At the Lake View licence (E31/1225), Solstice has undertaken compilation of historical exploration information and has identified significant drill results at the Statesman Well prospect. The prospect appears to have been first drilled by Tyson Resources Limited (Tyson) between 1986 and 1990. During 2012, Saracen Gold Mines Pty Ltd completed 24 RC holes (SWRC001–SWRC024) for 1,740m of drilling and reported that anomalous gold mineralisation was intersected in all the holes, with a peak individual sample result of 7.18 g/t Au (14–15 m) in SWRC022. Some of the more encouraging results from the drilling included:
- SWRC004 5m @ 1.25g/t Au from 21m
- SWRC010 7m @ 1.32g/t Au from 31m
- SWRC018 10m @ 1.63g/t Au from 58m
The gold mineralisation at Statesmen Well prospect occurs for at least 900m along strike and is open to the north and south.Choirboy Prospect
Choirboy Prospect
The Choirboy Prospect is located within E39/1914 and is associated with a mylonitic shear zone defined by tectonic cherts and quartz veins within a sequence of felsic metasedimentary schists, graphitic and sulphidic shales. Historical drilling, including 14 RC holes and 74 RAB holes, on nominal 100m line spacing, has defined a north-south mineralised zone interpreted by previous operators as dipping shallowly to the east, over a strike length of >800m. Better RC intercepts (using a 0.5g/t cut off) include:
- CBP001 8m @ 1.66g/t Au from 0m
- CBP007 4m @ 3.66g/t Au from 42m
- CBP008 15m @ 0.95g/t Au from 61m
- CBR014 2m @ 5.07g/t Au from 47m
- CBR022 12m @ 1.31g/t Au from 25m
Results from systematic rock-chip sampling completed by OreCorp are encouraging and correlate closely with the gold mineralised zones in historical drilling. Fifteen samples with grades > 1.0 g/t Au (range 1.04–19.65 g/t Au) defined a continuous Ridge Zone of high grade gold mineralisation over 320m of strike and up to 16m width. A high grade sample of 3.56 g/t Au was returned from a sample line 250m south of the Ridge Zone, which defines discontinuous gold mineralisation with a strike length of up to 570m. Gold mineralisation is variably associated with the fault-breccia, chert and volcaniclastic schist units.

The Gap Prospect
Located approximately 1.3km northeast of Choirboy within E39/1914 and comprises of a series of prominent parallel banded iron formation (BIF) ridges that strike north-northwest, intercalated with a quartz-mica schist and subordinate amounts of mafic schist. Strongly silicified fault-breccia with abundant quartz veining, sub-parallel to bedding, occurs along the crest of the western most BIF ridge.
Selective rock chip sampling in 2020 identified anomalism (>1.0g/t gold) over ~180m of strike. This was followed up with a systematic rock chip sampling program over the original zone of gold anomalism and its potential strike extensions. Best results for the follow-up sampling included 2.40g/t and 0.61g/t gold, further highlighting the gold mineralisation potential of The Gap Prospect.
Jericho Prospect
Located within P39/5600, the Jericho prospect is an early stage
target defined by a semi-continuous gold-in-soil anomaly covering an area of
1,200m x 100m, peaking at 522ppb Au. The anomaly predominantly overlies felsic
metasediments and volcaniclastics to the east and west of a prominent BIF ridge
which trends north-northwest and dips steeply to the east. The anomaly has been
lightly tested by 14 RAB holes on ~200m line spacing, with maximum downhole
intercepts of 1m @ 1.7g/t Au and 1m @ 1.3g/t Au in holes RCRB0059 and
RCRB0038 respectively.
Yarri Regional
Regionally within the Yarri Project area systematic geochemical surface sampling programs have been undertaken over a number of the exploration licences. The regional sampling programs targeted gold-prospective areas and utilised the UltraFine fraction (UFF) assay method to identify gold and multi-element anomalies. Several anomalous gold-in-soil zones have been defined within the Cosmo licence (E31/1175), Lucerne Well licence (E31/1150) and Kingsley Prospect within the Horse Rock Bore licence (E31/1121).
Data from the surface geochemistry will be used for development and prioritisation of gold targets for drilling.
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