332 BELT OF AURIFEROUS COUNTRY. 



Madoc synclinals. Under its western slope lies the belt of gold- 

 bearing strata alluded to above. The strata marked B, are beds of 

 horizontal or nearly horizontal Lower Silurian limestone, belonging 

 to the base of the Trenton series. Marmora village is situated on 

 these limestone strata, as at M in the section. Crow River, cutting 

 through the limestones, and exposing the upturned edges of the 

 underlying gneissoid rocks, is shown at C E. ; and the River Moira, 

 here reduced to a comparatively small stream, is indicated by the 

 initials R M. The observer, in reference to the section, is supposed 

 to be facing the north. 



Within the auriferous belt, lying, as remarked above, immediately 

 west of the Huckleberry ridge, and extending roughly to a short 

 distance beyond the line of the Moira, several well-defined bands of 

 gold-holdiiig arsenical pyrites have already been recognized, and the 

 number will undoubtedly be increased as the country becomes more 

 fully explored. These bands are apparently interstratified with the 

 Laiirentian strata, and consist essentially of mispickel associated 

 with more or less quartz, although containing a certain admixture of 

 iron pyrites, crystalline dolomite, fine particles of magnetic iron ore, 

 and folia of brown and blackish-green mica. In some places, the 

 foot -wall of these inclined bands of ore is marked by a layer of dark 

 greyish-green talcose slate, and thinner layers of the same substance 

 occasionally run parallel with the walls within the mass of the ore. 

 The dip or underlie of these bands, following the dip of the strata, 

 is necessarily towards the west, and at an average angle of about 

 30° or 35°. The principal bands of ore at present discovered, are 

 known as the " Gatling vein," on lot 9 of the 8th concession ; the 

 " Gillan vein " on lot 6 of the same concession ; the " Cook " or 

 " Williams vein " on lot 7 of the 9th concession ; and the " Feigel 

 vein," on lot 16, concession 11. On the Gatling exposure, a large 

 shaft has been sunk on the slope of the vein, to a depth of about 

 sixty feet. At this depth, the band presents a width of at least 

 sixteen feet, and is constantly yielding good shows of free gold. A 

 fair sample of the ore gave me, by assay, an amount of gold equiva- 

 lent to $112 per ton of 20001bs j and a small piece of the mispickel, 

 carefully separated from the accompanying quartz, &c., was found to 

 contain the proportional amount of $156 per ton. The Gillan band, 

 on lot 6, of the 8th concession, is of a very similar character, so far, 

 at least, as regards its surface conditions ; but it has only been 



