COAL ANALYSIS. 36t) 



Proximate analysis of coals from collieries of the Northern 

 Coalfields. 



Remarks. (a)N'o coke formed, only a dull, loosely-coherent cake left after 

 ignition, ash yellowish, flocculeut, part granular. (6) Coke well swollen, fairly 

 firm and lustrous, ash grey, granular, (c) Coke not much swollen, brittle and 

 dull, ash reddish tinge, granular, (a) No true coke formed, ash gray, floccu- 

 lent. (e) Coke well swollen, firm and lustrous, ash reddish tinge, flocculent. 

 (f) Coke well swollen, with cauliflower-like excrescences, firm and lustrous, ash 

 reddish tinge, gramilar. (g) Coke well swollen and firm, ash brownish, floccu- 

 lent. (7t) Coke well swollen, with cauliflower-like excrescences, firm and 

 lustrous, ash reddish tinge, granular, (i) Coke well swollen, firm and lustrous, 

 ash reddish tinge, granular, (j) Coke moderately swollen, bright in patches, 

 firm, ash reddish, granular. (7c) Coke excellent, well swollen, with cauliflower- 

 like excrescences, firm and lustrous, ash grey in colour, flocculent or granu- 

 lar, (l) Coke well swollen, hard and bright, ash brownish, part granular, part 

 flocculent. (m) Coke well swollen, with cauliflower-like excrescences, firm and 

 lustrous, ash reddish tinge, granular, (n) Excellent coke, well swollen, with 

 cauliflower-like excrescences, firm and lustrous, ash slight reddish tinge, part 

 granular, part flocculent. (e) Coke well swollen, bright, with dark patches, 

 ash reddish, granular, some portions flocculent. (p) Coke well swollen, hard 

 and bright, ash brownish, granular, (q) Coke fairly swollen, firm, ash light 

 brown, flocculent. (r) Coke well swollen, firm and lustrous, ash grey, granu- 

 lar, (s) Coke well swollen, with cauliflower-like excrsecences, firm and 

 lustrous, ash slight reddish tinge, granular, (t) Coke fairly lustrous and 

 well swollen, with cauliflower-like exrescences, ash light pink colour. () Coke 

 firm, bright, fairly well swollen, ash grey. 



x The samples were taken in 1899 by the then mine inspectors, and assayed in the 

 laboratory of the Department of Mines. See E. F. Pittman. "The Mineral 

 Resources of New South Wales," 1901, Sydney. By authority. 



'Mean of two samples. 



4 Prof. T. W. E. David, "The Geology of the Hunter River Coal Measures, 

 New South Wales," 1907, Sydney. By "authority. 



X 



