76 ON THE ANTHOPHYLLITE. 



XIII. 



On the Anthophyllite ; by J. C. Delametherie*. 



Anthophyllite Jl HE anthophyllite described by Schumacher is found at 

 wa " Kongsberg in Norway. It has the appearance of asbestoid, 



or strahlstein. I have an asbestoid from the Tyrol, that re- 

 sembles it greatly. Its crystals are prisms, the former of 

 which has not yet been determined. Its colour is a brown 

 green inclining a little to violet. It6 specific gravity, aor 

 cording to Karsten, is 3*156f. 



Dr. John of Berlin, has analysed this substance, and ob- 

 tained from a hundred parts, 



Its component Silex 6<2'66 



fart*. Alumine 13*33 



Oxide of iron • ■ » • • 12 



Magnesia 4 



Lime 3*33 



Oxide of magnesia • * 3*25 



98*57 

 Loss i-43 



100. 



This analysis evidently approaches near that of the as- 

 bestoid ; accordingly, I have placed it next the asbestoid in 

 my classification of minerals. 



SCIENTIFIC NEWS. 

 Wemerian Natural History Society, 

 Coal-formation 



2^5™ 1\T the meeting of the society on Saturday the 19th of 

 November, Mr. Mackenzie junior, of Applecross, read a 

 short account of the coal-formation in the vicinity of Dur- 

 ham. From the precise and accurate description commu- 

 nicated by this gentleman, the rocks appear to belong to the 

 oldest coal-formation of Werner. During the course of hi» 

 observations, he explained what is called the creep by min- 

 ers, and exhibited specimens of the different rocks, and a 

 section of the coal-mine of Kipier, in which both the 

 miners' appellations and the scientific names of the different 

 strata were inserted. 



• Journal de Physique, vol. LXIV, p. S5/>. 



+ Haiiy gives its spec. grav. 3-292, and suspect* it to bt merely a va- 

 riety of the Labradot hornblende. T. 



At 



