Around 1500m of reverse circulation drilling has begun at the Southern prospect at Mamba Exploration’s (ASX: M24) Calyerup gold project in the Great Southern Region of Western Australia.
The program is aimed at doubling the strike length of the Southern prospect from the present 500m to 1,000m.
In addition, this new program will involve the first drilling to be carried out that goes more than 50m from surface.
Calyerup Creek is an early-stage exploration project in the Albany Frazer tectonic zone. It covers the high-grade Metamorphic Craton Margin setting similar to the Tropicanna and Glenburgh mines.
Historical exploration ‘limited’
The company says that its shallow drilling at the prospect in late 2021 and early 2022 discovered mineralisation over more than 500m of strike, and only to very shallow depths (about 35m down hole).
Of the 32 holes drilled in that previous program, 27 intersected what Mamba describes as significant mineralisation.
Assays included 15m at 2.2 grams per tonne gold, including 3m at 3.53g/t (and with that mineralised intersected at 1m from surface).
Other assays were 15m at 2.08g/t (including 2m at 9.74g/t) and 16m at 1.05g/t (including 3m at 2.58g/t. These two holes struck mineralisation at 3m and 18m down hole respectively.
Two other very shallow intersections were reported — from 7m downhole there was 11m returned at 1.38g/t, and from 6m the assay came back at 9m for 2.5g/t.
Mamba notes that the historical work carried out was limited and involved predominantly shallow drilling.
Diversified portfolio across Western Australia
Mamba’s 100%-owned projects are located in the Ashburton/Gascoyne, Kimberley, Darling Range and Great Southern regions of Western Australia. All are 100% owned.
The projects in the Ashburton/Gascoyne region and Great Southern region are prospective for gold and rare earths.
The ground in the Kimberley and Darling Range regions are prospective for metals such as copper, nickel, platinum group elements and rare earth elements.
In August the company secured access to its Black Hills project, located about 30km from the high-profile Julimar discovery by Chalice Mining (ASX: CHN) of extensive platinum group elements-nickel-copper-gold.