54 Miscellaneous Localities of Minerals. 



a striking difference between what is called the white py- 

 roxene of Kingsbridge and the common augite, as the 

 Kingsbridge augite is as fusible as the scapolite of Bolton, 

 which would rather induce us to place this variety of py- 

 roxene with the scapolites which in many other respects it 

 resembles. 



Before I conclude it may not be quite uninteresting to 

 inform you that while on a visit to Chesterfield, Massachu- 

 setts, I had an opportunity of seeing a fine specimen of the 

 siliceous oxyd of manganese, which was obtained in that 

 neighbourhood, but the precise locality I was unable to as- 

 certain, owing to an inadvertence of my companion in hav- 

 ing prematurely given an opinion of its value. I however 

 obtained a few specimens from the mass which was shown 

 me, which I shall describe as follows ; it is of a bright rose 

 red colour, and translucid, particularly at the edges, with 

 some lustre, structure rather granular, found in compact 

 masses accompanied with the gray oxyd, hard, scratches 

 glass, takes a fine polish and in this state constitutes a beau- 

 tiful mineral which is rather rare, found only in Sweden 

 and in England, it is so exactly similar to specimens which 

 I have from Devonshire that it is impossible to distinguish 

 the difference. W. M. 



Art. V. — Miscellaneous Localities of Minerals. 



JVotice of Fluor Spar by Thomas H. Webb. 



" Since writing you, I have had the pleasure of being able 

 to trace out the new locality of Fluor.* It is situated in 

 Cumberland, about one mile beyond Diamond Hill, on the 

 direct road to Wrentham. It is found at a number of differ- 

 ent places. At one it is imbedded in a vein of quartz tra- 

 versing a granitic or sienitic rock, and at another it is found 

 with quartz loose in the ground. The colours of the speci- 

 mens which I obtained are purple, blue of various shades, 

 from pale to indigo, blue with a tinge of green, and white. 

 They all, (with the exception of the white,) appear of a 

 beautiful purple when viewed by candle light.'' 



* For another locality o( Fluor, in Sekonk, Mas?, f ommunicatecl by Mr. 

 vVebb, See Jour. Sci. v. i?-,p. 53. 



