Surefire Resources NL (ASX:SRN) has completed the maiden drilling program at its Phat Boy copper prospect at the Yidby East Project in the Mid-West region of Western Australia, intersecting 50 metres of disseminated and blebby sulphides in volcanics.
Drilling intersected a sequence of dark volcanic clays followed by disseminated sulphides in black volcanic fresh rock beneath the anomalous copper and zinc soil geochemical anomalous zones.
Encouragingly, the drilling included a 50-metre-wide intersection of continuous disseminated sulphides in black volcanic rock.
Sulphide blebs within fine-grained disseminated sulphides.
The Phat Boy prospect is on the southern portion of E59/2426, where previous exploration highlighted native copper and sulphides within a package of interpreted submarine volcanic rocks.
Surefire carried out detailed soil sampling in August and September 2024 which revealed four distinct geochemical zones of coincident copper and zinc anomalism.
The maiden drill program followed, involving 11 shallow reverse circulation (RC) holes for 672 metres of drilling over the four target areas.
Geochemical soil anomalies and drill targets T1 – T4.
Drilling was aimed at testing the near-surface geochemical anomalies only as no geophysics has yet been undertaken.
The geology observed was dark volcanic clays followed by fresh black volcanic rocks. Numerous sulphides were observed. It was noted that the specific gravity of the rock sample increased significantly where these occurred.