Braeside Discovery Shows Regional Scale Potential
Rumble Resources Limited (ASX: RTR) believes it has made a potentially regional scale discovery with its exploration programme the Braeside project in the Pilbara region, Western Australia.
The latest drilling at Braeside has discovered multiple high-grade lead breccia zones from surface and over 800m of strike at the Barker Well Prospect.
Managing Director, Shane Sikora, said this drill programme complements the recent exciting drill results from the Camel Hump Prospect at Braeside, where significant wide zones of copper oxide mineralisation with zinc and lead hosted in volcaniclastics was discovered showcasing all the hallmarks of a new VMS (volcanogenic massive sulphide) province.
He said both the discoveries highlight the potential for camp scale “clusters” of high-grade base metal deposits with 45 high order untested targets generated all capable of discoveries.
The Braeside Project area comprises 673 sq. km. Contiguous to east of the Braeside Project is the Warroo Project comprising of 970 sq. km and the Lamil JV project with an area of 1325 sq. km.
A total of 52 RC drill holes for 2290m tested three main areas over a strike of 800m at Barker Well. RC drilling utilised small track mounted rigs to enable access in the hilly terrain. On average, the drilling depth range was to 50m vertical.
The discovery of high-grade galena mineralisation associated with breccia zones/pipes has significantly upgraded Barker Well as having 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.
The width of the pervasive alteration is significant with up to 40m wide zones grading 1% Pb (approximately 30m true width). The high-grade galena mineralisation is generally steep dipping to the west. A large magnetic (dolerite to gabbro) sub-parallel dyke sits in the hanging wall to the galena mineralisation. The dyke (unmineralized) has intruded along the main mineralised structure.
Results from South Zone include:
- 4m @ 18.63% Pb, 1.72% Zn, 11.7 g/t Ag from 17m;
- 6m @ 10% Pb, 0.87% Zn, 7.5 g/t Ag from 27m;
- 2m @ 9.11% Pb, 0.63% Zn, 5.1 g/t Ag from 28m; and
- 6m @ 12.35% Pb, 0.5% Zn, 14.1 g/t Ag from surface
Results from North Zone include:
- 3m @ 13.93% Pb, 0.54% Zn, 10.1 g/t Ag from 29m;
- 5m @ 6.71% Pb from 44m;
- 2m @ 6.76% Pb from 15m; and
- 5m @ 4.1% Pb, 0.23% Zn from 13m.
Orientation IP is now planned to test both the north and south breccia zones at Barker Well. Silica – pyrite – galena breccia zones within a shallow weathered environment and hosted in predominantly andesitic basalts, in principle, would be conductive to a resistivity/chargeability survey.
The IP survey will aid in targeting deeper high-grade mineralisation positions for RC and diamond core drilling. This will further scope out the size potential for multiple breccia zones.
Rumble acquired the Braeside Project in April 2017. The project hosts historic high-grade lead dominant small-scale prospects and diggings 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 generated forty-five (45) Cu-Zn-Pb- Ag-priority targets.
