THE MINING AND QUARRY INDUSTRY I9II 93 



made its usual large output, though it concentrated its attentions 

 upon fewer properties than in the previous years. Of the mines 

 owned by the company only three were steadily worked, these 

 including No. 2^ and No. 3 at Talcville and a new mine which has 

 been opened in the vicinity of the old Wight mine in the south- 

 western section of the district. The mine formerly worked by the 

 United States Talc Co. and taken over by the International Pulp 

 Co. in the recent consolidation was closed down during the year. 

 This has been one of the most productive and best known mines in 

 the district. Little talc was taken from the Arnold and Balmat 

 mines of the old Union Talc Co. The company operated the new 

 No. 6 mill which has a capacity of about 125 tons a day, as well as 

 No. 3 and the Columbia mill. It has recently converted No. 4 mill 

 at Hailesboro into a power plant. 



Outside of the Gouverneur district the only talc occurrence that 

 received attention during the year was that near Natural Bridge in 

 Lewis county, mentioned in the preceding issue of this bulletin as 

 under development by the St Lawrence Talc and Asbestos Co. The 

 property is situated about one mile northeast of Natural Bridge in 

 a belt of crystalline limestones and schists that parallels the St 

 Lawrence county district, from which it is 10 or 15 miles distant. 

 The talc, so far as opened, belongs to the massive and platy 

 varieties rather than to the fibrous mineral so characteristic of the 

 Northern belt. There appears to be more or less serpentine in close 

 association with it. Tremolite was observed in a boulder outcrop 

 near the mine. A vertical shaft has been put down on the property, 

 and a crushing plant and mill were under construction last year. 



THE GOUVERNEUR TALC DISTRICT 



This description of the St Lawrence talc mines is intended only 

 as a sketch of the principal features surrounding the occurrence of 

 the deposits and their industrial utilization. The information on 

 which it is based has been taken largely from published sources, 

 though with such revision as to make the treatment representative 

 of present conditions. 



General geology. The investigations of the geology of this sec- 

 tion have been carried out mainly by C. II. Smyth, jr. The work 

 hitherto has been in the way of a reconnoissance, as there have been 

 no adequate maps with which to conduct detailed studies of the 

 region which is very involved in its structural and stratigraphic 

 features. The rock formations belong, however, to the same general 

 classes that compose the central Adirondack region and have been 



