Hits Copper And Gold In Southern And Eastern Copper Zones
Meridian Mining UK (TSXV: MNO) has intersected intact Cabaçal mine’s host stratigraphy during drill and surface geophysical programmes at its Cabaçal copper-gold project in Mato Grosso, Brazil.
The first of two diamond drill holes, (DDH) CD-001, targeting the Southern Copper Zone (SCZ) has been concluded to a depth of 189.55m by Rig One.
Rig Two concluded CD-002 as an initial test the Easter Copper Zone (ECZ) and was completed to a depth of 95.2m.
The surface electromagnetic (EM) programme is completed and has defined the Cabaçal mine sequence’s response that extends past the historic mine limits.
The company has also signed a technical exchange agreement with the Universidade Federal de Mato Grosso (UFMT) accessing its historical core collection from Cabaçal.
Both holes CD-001 and CD-002 have intersected intact Cabaçal mine’s host stratigraphy: Rig 1 cored intervals of SCZ’s disseminated, stringer and breccia styles of sulphide mineralization (chalcopyrite-pyrrhotite-pyrite) extending from 50.16m to 151.65m downhole;
o Rig2 cored intervals of ECZ’s disseminated to stringer and breccia styles of sulphide mineralisation (chalcopyrite-pyrrhotite-pyrite) extending from 39.7m to 63.9m downhole;
Rig 2 is now moving to the SCZ alongside Rig 1 to start a fan of holes into this zone to target Cu-Au and to provide platforms for defining and testing electromagnetic responses.
Meanwhile, an orientated fixed-loop surface EM survey over the Cabaçal mine and extending southwards is concluded with the data now being processed by Core Geophysics
Hole CD-001 was collared above the SCZ and projecting ~ 80m south of the limit of historical workings based on digitizsd records of historical selective room and pillar mine development.
The hole was drilled from the historical drill pad of JUSPD 596, which intersected 15m @ 5.20% Cu, 2.66g/t Au, 9.54 g/t Ag. CD-001 was drilled HQ through the saprolite and upper bedrock and reduced to NQ. The hole intersected the CTB mine sequence unit – a foliated meta-volcaniclastic horizon, with disseminated sulphides and local stringer mineralisation, from 50m downhole, and continued to the acid volcanic footwall (TAC) from 151.6m. As standard practice CD-001 is now being surveyed to check the down hole trajectory.
CD-002 was collared above the ECZ, ~ 50m west of an exploratory branch of the historical mine workings, into an area where this sequence becomes more copper dominant.
Part of the mine stratigraphy here projects below a sub-horizontal gabbroic sill that blocks all surface expression or soil anomaly of the Eastern Copper Zone. The hole was drilled from the historic pad of JUSDP 228, which intersected 23.03m @ 0.95% Cu, 0.3g/t Au, 7g/t Ag, including 3.18, @ 4.45% Cu, 1.36g/t Au, 39.06g/t Ag. Adjacent holes in historical cross sections show the projection of stringer sulphide zones, with verification drilling required in some areas where historical assays are not available. CD-002 confirms that the ECZ remains open and requires further drilling.