THE REGIONAL GEOLOGY
LAURION’s Ishkoday project is located in the southern part of the Onaman-Tashota Greenstone Belt ('OTGB') which is separated or defined from the Beardmore–Geraldton Greenstone Belt ('BGGB') by the east-trending Paint Lake Fault. The collective OTGB and BGGB ranks among the top 10 known gold camps in the Canadian Shield.
Historical gold mines and current gold exploration camps are located throughout the BGGB and there are numerous gold-silver and base metal occurrences present in the OTGB that highlight this prospective but underexplored area. Total production from this region totals 4.4 million ounces of gold which emanated from 19 mines, 9 of which are located in the Geraldton Area, 6 in the Beardmore area and the remainder in the OTGB.
LAURION’s Ishkoday property can be described as contained within a north-easterly volcanic 'wedge' and is situated in an area where the Archean volcanics have been wedged in between the Coyle Lake Stock to the south of the Namewamikan River and the Elmhirst Stock to the north.
LAURION’S Ishkoday Property Geology
LAURION’s Ishkoday Property lies in the southern most portion of the OTB. The OTB is underlain by Archean felsic to intermediate volcanics that are intruded by porphyritic granodioritic and dioritic intrusives. The volcanics consist of NE striking and SE dipping rhyolitic units overlying steeply dipping rhyodacities to dacites. Contacts between the flows are gradational.
A large foliated granodiorite is located to the north, and separated by a major shear zone from the volcanics. Three main structural trends exist on the property. These are NE-trending quartz veining and associated shearing, and E to ESE trending faults. Most veins are oriented NE, and represent a dilatant crack-seal type veining with minor associated shearing. Dextral movements along the E to ESE-trending faults are thought to represent the mechanism which produced the NE dilatant features hosting the gold-bearing quartz veins (Laudrum, 1988).
Regional scale alteration has resulted in moderate but pervasive chlorite, epidote, sericite and carbonate alteration affecting the volcanic and intrusive rocks at Ishkoday. Weak to moderate but pervasive silicification is also present. Iron oxides are also present as hematite occurring along fractures, and limonite as cubic crystals in the felsic intrusives. Tourmaline occurs along fractures in jointed granodiorite. Weak but pervasive carbonate and minor quartz-carbonate veinlets are also common.
Gold is associated with quartz (carbonate) veins hosted by felsic to intermediate metavolcanics, and located often marginal to felsic intrusions (dikes or stocks) (stock-related). Veins are typically sigmoidal or lenticular within the OTGB, and free gold is common. Sulphide content within such veins ranges from nil to 40%. Pyrite, pyrrhotite, chalcopyrite, sphalerite, galena may be present in the veins. Gold usually occurs in the vein as free gold, or as microinclusions in sulphides or more rarely within the sulphide crystal lattice. Gold can occur in sheared wall rocks. (Mason and White -1986).
LAURION's Ishkoday hosts structurally-hosted gold-base metal mineralization in centimetric to metric wide shear and tension 'veins' extending tens, hundreds and several thousand metres in length in a NE-SW structural trend visually defined over a minimum 3km by 1km area (3 km2), but likely extend N-S outside the 1 km wide known vein field onto the northern claims held by LAURION.
Drilling since the 1980’s shows the Target potential on LAURION's Ishkoday – there are 85 assay interval results over 5 g/t gold with silver, copper and zinc credits from 0.1m to 3.2m interval lengths within the known 3 km2 mineralized trend.
LAURION’s Ishkoday has hundreds of quartz veins, as attested by detailed mapping from previous operators in the 1980’s and LAURION’s exploration work from 2010 to 2014. From field work completed - observations strongly suggest major 'vein stockworks', as can be observed at the Dome, Canadian-Malartic, Detour and Sigma-Lamaque Deposits from the Abitibi Greenstone Belt. Contrary to these other deposits, LAURION’s Ishkoday shows two mineralized systems, one gold-silver-rich and the other gold-silver-zinc-copper.