Mineral Deposit Type Target(s)
- Porphyry related structurally controlled Zinc-Lead-Copper-Silver-Gold Deposits
- High level (epithermal) base metal veins Deposits
- Sediment hosted disseminated base metal replacement zones Deposits
- Porphyry related stock-works Deposits
- Volcanogenic hosted massive sulphide type systems (VMS) Deposits
The Braeside Project, located in the east Pilbara region of Western Australia located 129km east of Marble Bar in the East Pilbara Region of Western Australia. The project covers 673 km2 consisting of E45/2032 (RTR 70%), E45/4368 (RTR 70%), E45/4874 (RTR 100%) and E45/4873 (RTR 100%)
Image 1 – Braeside-Barramine Project – Tenure, Regional Geology
3 Years of Systematic Target Generation
- Regional Scale Porphyry to Epithermal System from surface
- Large-scale mineralised system over 60km in strike and 8km in width
- 45 Priority Cu-Au-Zn-Pb-Ag targets generated – all capable of discoveries
- Camp Scale Potential with 5 deposit types delineated
Rumble acquired the Braeside Project in April 2017. The project hosts many historic high-grade, base metal, small-scale mines including the high-grade Ragged Hills mine that produced high-grade lead, zinc and silver up until 1959. Prior to Rumble’s acquisition no systematic modern exploration had been completed at Braeside. The first phase of systematic exploration commenced in May 2017 and over a period of 3 years, and multiple phases of exploration Rumble has now generated forty-five (45) Cu-Au- Zn-Pb-Ag-priority targets, all capable of significant discoveries.
Geological Model for Braeside Project
Exploration along with spectral mineral mapping and alteration studies (includes two CSIRO studies) has outlined at least five (5) Zn-Pb-Ag-Cu-V-Au styles of mineralisation at Braeside.
Image 2 – Braeside Project – Braeside Geological/Alteration Model
Camel Hump – New Copper Discovery
A small shallow RC programme (8 drill holes for 455m) has discovered significant widths of copper mineralisation hosted within volcanogenic siltstone (volcaniclastics) and underlain by black shale within an andesite (extrusive) sequence. Mineralisation is primarily oxide (only shallow RC completed) with dominant minerals being malachite, chalcocite and native copper. The drilling focused on outcropping malachite mineralisation which had been channel sampled with results to 2.59% Cu. Associated with the copper oxide mineralisation (RC drilling) was elevated zinc, lead and silver. Zinc returned up to 1200ppm, lead returned up to 1% and silver returned up to 6.7 g/t Ag. Results from the RC drilling include:
- CHRC005: 19m @ 0.43% Cu from 12m
including 6m @ 1.02% Cu from 18m
- CHRC006: 33m @ 0.4% Cu from surface
including 9m @ 0.75% Cu from 6m
- CHRC009: 38m @ 0.19% Cu from surface
- CHCR010: 35m @ 0.55% Cu from 8m
including 8m @ 1% Cu from 11m and 5m @ 1.02% Cu from 36m
- CHRC011: 37m @ 0.46% Cu from 19m
including 5m @ 0.86% Cu from 22m and 6m @ 1% Cu from 45m
- CHRC012: 31m @ 0.37% Cu from 30m
including 5m @ 0.89% Cu from 32m and 5m @ 0.62% Cu from 54m
Note intersections are true width (see image 3)
Image 3 –Camel Hump Copper Prospect – Drilling Results and RC Drill Section
Discovery of Potential New VMS Province
Copper mineralisation is hosted in siltstone (volcaniclastic) intercalated with andesite, shale and is associated with zinc, lead and elevated silver with the mineralisation style considered volcanogenic (VMS).
Of great significance is Rumble’s Warroo Project that lies some 30km to the southeast of Camel Hump which hosts the same lithology to the copper mineralisation at Camel Hump which has similar characteristics to the Warroo Hill Member lithologies.
The Camel Hump and Warroo Hill Member lithologies lie within the same corridor with respect to strike and structure. The inference is the potential for a significant VMS province.
Of Note: Drilling intersected the potential Copper Footwall stockwork stringer zone which is normally below the main High-Grade VMS Deposit Zone – See Typical VMS Deposit model.
Image 4 –Typical VMS Model
Barker Well – High-Grade Lead Discovery
Rumble discovered of high-grade galena mineralisation associated with breccia zones/pipes having having the potential for economic Pb-Zn-Ag open cut/underground deposits. High-grade galena mineralisation has developed as semi massive “pipelike” zones with generally steep south plunging pyrite – silica breccias within pervasive chloritized altered flat lying andesitic basalts and associated volcaniclastics. Galena (dominant mineral) and minor sphalerite is pervasive within the chlorite altered host as sulphide veinlets and disseminated zones.
High-grade assays include:
- 4m @ 18.63% Pb, 1.72% Zn, 11.7 g/t Ag from 17m (BRRC158) ⃰
- 6m @ 10% Pb, 0.87% Zn, 7.5 g/t Ag from 27m (BRRC159) ⃰
- 2m @ 6.76% Pb from 15m (BRRC161) ⃰
- 2m @ 9.11% Pb, 0.63% Zn, 5.1 g/t Ag from 28m (BRRC175) ⃰
- 7m @ 5.6% Pb from 12m (BRRC179) ⃰
- 6m @ 12.35% Pb, 0.5% Zn, 14.1 g/t Ag from surface (BRRC180) ⃰
- 2m @ 11.43% Pb, 0.48% Zn, 11.5 g/t Ag from 39m (BRRC184) ⃰
- 3m @ 13.93% Pb, 0.54% Zn, 10.1 g/t Ag from 29m (BRRC185) ⃰
- 6m @ 6.71% Pb from 44m (BRRC186) ⃰
- 6m @ 7.58% Pb, 7.7 g/t Ag from 25m (BRRC141) ⃰
- 3m @ 14.23% Pb, 1% Zn, 9.3 g/t Ag from 30m (BRRC155) ⃰
- 3m @ 6.07% Pb, 6.4 g/t Ag from 15m (BRRC150) ⃰
Broad mineralisation haloes with associated breccias include:
- 16m @ 3.1% Pb from 16m (BRRC185) ⃰
- 21m @ 3.42% Pb from 27m (BRRC159) ⃰
- 20m @ 2.3% Pb from 8m (BRRC179) ⃰
- 41m @ 1% Pb from surface (BRRC150) ⃰
⃰ Intersections are drill hole length
- Three steep dipping galena breccia zones defined over 800m
- Mineralisation is open in all directions
- Drilling is shallow with 80% of drilling to depth of only 50m
- High-grade galena (sulphide) starts at surface and is associated with sphalerite (Zn) and silver (Ag) hosted in andesitic basalts and volcaniclastics.
- Discovery of shallow high-grade galena from surface and the recent copper discovery at Camel Hump highlights the camp scale potential for multiple high-grade base metal deposits with up to 45 high order targets generated within the Braeside Project. All targets are capable of discoveries
Image 5 –Barker Well Prospect South Zone