REPORT OF THE DIRECTOR AND STATE GEOLOGIST 



rSl 



metal, when the demand for better roads shall arise, but within 

 the shoot limits it is mostly under deep cover. 



There is a vast amount of good building stone in the di-strict, 

 most of which is unfortunately situated as regards access to 

 market. Both the pre-( 'ainbrian rocks and the Potsdam sand 

 stone will furnish good stone. 



There is an old quarry in the Potsdam on Rand hill by Sand- 

 burn brook in a red, massive sandstone belonging in rhe basal 

 part of the formation. The stone is quite like thai <|iiarried at 

 Potsdam in charaeter. though of a deeper red shade, and seems 

 of an excellent quality. But, as shown in the quarry face, there 

 is only a thickness of 5 feet of good stone, and the lateral extent 

 N problematic, as the pre-Oambrian reeks appear wit bin less than 

 a quarter mile on either side. The quarry has not been worked 

 for years, and had only a local use. but furnishes the best appear- 

 ing stone that the writer has noted in the district. But much of 

 the 'ordinary, light colored stone in Altona, Mooers and Chazy 

 would furnish an excellent building stone, with a minimum of 

 labor in quarrying, as there is no stripping to be done. It is not. 

 probably, of such extra fine quality, all filings considered, as to 

 create a widespread demand, but is more than ample to satisfy 

 all local requirements. 



Of the pre-Cambrian rocks the anorthosite-gabbro seems of 

 the most value. Muck of it would make an excellent paving 

 stone. Well granulated, anorthositie rocks are exceedingly tough, 

 and a rock very similar to that on Rand hill is used for paving 

 in the city of Montreal and gives good satisfaction. 



Fair to good building stone is furnished by the Dannemora 

 formation, the anorthosite-gabbro and the syenite. The new state 

 building at Dannemora is constructed of a dark red, granitoid 

 gneiss of the Dannemora formation, obtained close at hand on the 

 south slope of Dannemora mountain, the stone being strong and 

 durable when carefully selected, and of quite pleasing appear- 

 ance. 



Recently W. M. Games of West Chazy has commenced quarry 

 operations on Rand hill, in both the anorthosite-gabbro and the 



