The Property is host to four gold deposits including the Orion, Muddy Shag, Hammerdown and Rumbullion. The Muddy Shag, Hammerdown and Rumbullion are essentially one mineralized system contained in separate faulted blocks and is collectively referred to has the Hammerdown deposit, while the Orion deposit is located approximately 2 kilometers to the southwest. Only the Hammerdown and Rumbullion have seen historical development and mining.
All deposits occur in the Hammerdown Deformation Zone (HDZ) which is described has a 100-250 wide structural corridor of strong ductile to brittle shearing hosted in the uppermost units of the bi-modal Catchers Pond Group. The Lochinvar VMS base metal deposit also occurs in the HDZ along with the Golden Anchor gold veins and Beetle Pond VMS alteration zone.
The Hammerdown-Rumbullion-Muddy Shag vein system consists of a series of stacked gold veins hosted in the bi-modal felsic/mafic early Ordovician island arc Catchers Pond Group. The host rock was uplifted, folded and intensely sheared (HDZ), then invaded by early Silurian quartz feldspar porphyry dykes, which were closely followed by the gold-bearing quartz-sulphide veins.
A structural interpretation defined the deposits to being located within a high-strain shear zone that as experienced a prolonged and intense deformational history. Detailed interpretation of the deposits concluded that the Captain Nemo Fault and the Rumbullion Fault represent only smaller segments of much larger and complex fault system defined by a number of fault-bounded panels containing different slices of the host stratigraphy.
At depths of 150 meters to 250 meters most of the gold zones are cut off by the extensive Captain Nemo Fault which crosscuts the HDZ at an oblique angle. The Rumbullion Fault defines the boundary of the Hammerdown designated veins from the Rumbullion veins to the east. To the west, the Hammerdown vein system pinches out at a strong flexure in the shear zone which rotates the shear from east-west at Hammerdown to the southwest. This southwest trending shear extends for several hundred metres and hosts the Muddy Shag gold zone.
The more robust veins in the Hammerdown zone are closely associated with the more extensive late QFP dykes near the top of the hangingwall mafic sequence. Hanging wall veins are hosted in mafic rocks, while some footwall mineralization is hosted by older footwall felsic units. Younger porphyry dykes are only erratically associated with mineralized veins in both footwall and hanging wall locations.
In the Rumbullion and Muddy Shag zones veins are less numerous and narrower, possibly due to the lack of more extensive QFP intrusions.
The gold-bearing veins throughout the mineralized system consist essentially of vein quartz with 5 to 20% pyrite occurring as massive stringers and dense disseminations. Base metal sulphides total about one percent, with zinc content equaling combined copper and lead values. Minor bismuth occurs as native metal as well as the sulphosalt hammarite.
Gold is intimately associated with all sulphide phases, occurring as discrete grains within sulphides, at sulphide grain boundaries and, occasionally in quartz fractures near sulphide grains. There is a direct relationship between sulphide content and gold grade in veins. The gold is fine grained, with 80% being of grain size less than 20 µm. The largest grain size is slightly over 100 µm along the long axis; relatively little visual gold occurs in the deposit.
Other than quartz, gangue minerals are chlorite and carbonate (calcite and ankerite) with minor rutile. Hydrothermal alteration of mafic wall rocks consists mainly of muscovite/sericite and calcite, with minor rutile, creating a light bleaching halo usually similar in thickness to the gold-bearing vein.
In 2018 and 2019 Maritime completed two in-fill drilling campaigns to better define the geometry of the remaining un-mined resource. The new in-fill drilling and re-interpretation of the mineralized intersections generated 62 wireframes representing the entire vein system. The new drilling also noted numerous significant gold assay intervals that could not be incorporated with the new wireframes.
Hammerdown Gold Veins
At Hammerdown, the more robust main veins are located along the north and south contacts of a fairly continuous, sill-like felsic porphyry body intruding the sheared mafic volcanic host. The veins dip predominantly to the north although at depth they rotate to a steep southerly dip due to drag folding as they near the Captain Nemo Fault. The veins also appear to plunge to the west with high-grade shoots within the plane of the vein plunging steeply to the east. These larger veins were the target for the 2000 to 2004 cut and fill mining phase by Richmont Mines, however the updated wireframes have determined that some of the veins remain at the peripheral edges of the historical mining, probably due to the higher cut-off grade used at the time in defining mining blocks.
The Hammerdown hanging wall veins occur in less deformed mafic volcanics with a minor iron formation component and leucoxenebearing mafic dykes. Felsic porphyry sills are present but smaller and do not seem to influence the location of the veins like the larger QFP associated with the larger main veins. The hangingwall veins generally do not have the same depth extension as the larger vein system therefore they do not reach the Captain Nemo Fault. They do exhibit merging and/or bifurcation both along strike and vertically. Dips progressively shallow from south to north but are still quite steep (80°). High-grade shoots within individual veins have steep easterly plunges.
The footwall veins are hosted by strongly sheared mafic and felsic volcanics and volcaniclastics intruded by felsic porphyry sills which play a significant role in localizing the veining. Dips are near vertical and all footwall veins are truncated by the Captain Nemo Fault.
In addition to the gold rich quartz/sulphide veins described above the 2018 and 2019 infill diamond drilling intersected a lower grade mineralized unit that is located in the footwall near the intersection of the Captain Nemo Fault and the Rumbullion Fault. The unit, described as a sheared felsic volcanic, is intensely altered with disseminated pyrite and localized minor base metals along with sections of pervasive sericite and/or silica. The unit has a characteristic schistose fabric and it is unclear at this point if the mineralization is stratigraphically or structurally controlled. The unit returned gold assay grades up to 3.54 g/t gold over 2.63 meters (See Maritime Press release June 4th., 2018 and July 11th., 2019).
Rumbullion Gold Veins
At Rumbullion, the veins appear to be less numerous and are contained in shear zones developed along the limbs of tight, S2 folds in mafic volcanics and leucoxene-bearing mafic dykes. Some veins are preferentially localized along volcanic-dyke contacts. The veins strike east-west in the western portion of the deposit then swing to the northeast in the eastern portion while dips are steep to the north. Although drill spacing is not as tight as at Hammerdown, there appears to be a moderate 45° westward plunge to the high-grade shoots within the western segments of the Rumbullion veins opposite to the plunge exhibited at Hammerdown.
East of the Rumbullion Fault, the Rumbullion vein system continues in an easterly direction for approximately 150 metres, where an abrupt flexure rotates the vein system sharply to the northeast. The vein system continues to the northeast for at least 500 metres however, the number of lenses seems to reduce in this direction.
Along the north-easterly trend of the Rumbullion zone the Captain Nemo Fault appears to develop into multiple fault panels which may or not contain QFP dykes and or mineralized veins. The fault panels and veins diverge to the east and remains open both at depth and along strike. Approximately 500 metres along strike to the east, gold intercepts ( Golden Anchor Zone) have been encountered in the hangingwall to the zinc rich Lochinvar VMS deposit .
Muddy Shag Gold Veins
At Muddy Shag, several sub-vertical dipping quartz vein zones with a strike of 050° are hosted within moderately to strongly sheared mafic to felsic volcaniclastics and minor black cherty sediments assigned to the Ordovician Lushes Bight Group. All zones are gold-bearing and show significant vertical and lateral geological continuity. The immediate area is intruded by a series of sheeted mafic dykes (often leucoxene bearing) and quartzfeldspar porphyry dykes.
One of the stronger veins is intimately associated with a quartz-feldspar porphyry dyke contained within strongly foliated mafic schist. Occurring both within the dyke and along its margins are sulphide-bearing quartz veins which reach up to 5 to 10 centimetre wide and contain up to 40% coarse granular pyrite and lesser sphalerite. Strong pinching and swelling within this vein zone often make it difficult to follow by drilling.
One of the veins also occurs within strongly foliated pyritic mafic schist and is comprised of numerous quartz-calcite stringers which contain up to 40 to 50% coarse granular pyrite. Albeit individually these stringers may not represent a significant zone, when combined in high densities over 1 to 3 metre, these stringers represent a significant gold zone.