44 ON A NEW TUNGSTEN (SCHEELITe) DEPOSIT 



be near the place where it noses around the axis. About a 

 hundred feet south-southeast of the pit is an exposure of 

 blebby (nodular) quartzite in slate, dipping southward about 

 60°, showing that the beds steepen just there. The quartzite 

 ledge in which the deposit occurs, can be traced for some dis- 

 tance east-northeastward and diagonally across the Old Cob- 

 equid Road; but the vein could not be located in the many 

 exposures I examined in that direction. 



A fissure vein. — From the opposing dips of the quartzite 

 country-rock and of the quartz vein which carries the ore — 

 the former dipping about 25° to the south-southeastward, and 

 the latter at varying angles to the northward, — it is also clear 

 that the vein is not interbedded as I hoped it was, but that it is 

 a fissure one penetrating northward, at varying pitches, into the 

 heavily-bedded quartzite which itself dips, as stated, S. 20° E. 

 at an angle of 25°. The Perry Lake Scheelite deposit, on the 

 contrary, is an interbedded vein on the northern side of the 

 anticlinal axis, as it dips to the northwestward in harmony with 

 the strata. 



It seems quite possible that if the Sackville vein is follow- 

 ed further into the country-rock, it will be found ultimately 

 to be an oif-shoot from an interbedded vein somewhat to the 

 northward at a moderate distance. This I believe will prove 

 to be the case. As has been said, no indication of the extension 

 of the vein could be located in the exposures on the strike to the 

 east-northeastward; and to the westward soil covers the rock- 

 surface. 



Suggestion as to future exploration. — It seems that the best 

 that can at present be done, is to follow the fissure-vein where- 

 ever it may lead into the measures, to ascertain what it is con- 

 nected with and thus possibly locate a main interbedded vein 

 which would be more regular and extensive, and it is to be hoped 

 as well mineralized. This is what I recommended to be done, 

 should the work be continued, unless new evidence of the ex- 

 istence of the vein could be found near by. The amount of ore 

 present in the fissure-vein, judging by what had recently been 

 taken out, should at least pay for this exploratory work. A 



