244 An AcQouni of some JSfew and Extrfmrdinarij Miiitmh. 



o? an extraordinary form, having the ohtuse angle sometimes 

 jeplaoed by a broad face. Near Franklin I have found a 

 most beautiful mass of greenish vphite tremolite of this form 

 also, the lustre of these crystals is like that of silk. 



Crystals of augite abound here, of gigantic magnitudes; 

 and sometimes when smaller, of considerable perfection of 

 form ; they are generally grayish green. Brucite also oc- 

 curs here of a beautiful orange and of a palish yellow colour ; 

 the paler coloured variety is occasionally crystallized in ap- 

 parently modifications of the rhombic prism, but hitherto un- 

 measured. The orange coloured are imbedded in a bluish 

 limestone. The blue limestone also occurs in this vicinity 

 in globular concretions loosely aggregated, very similar to the 

 blue limestone of Vesuvius and the Bannat. 



In a very singular bed, subordinate to, and indeed in the 

 crystalline limestone occurring in the form of a breccia of the 

 old red sandstone, red graphic granite, and white feldspar, I 

 have found partly diaphanous, softish, green octahedral crystals 

 of considerable magnitude for which I know of no ascertained 

 character. They appear almost similar in substance \o stea- 

 tite, being easily cut by a knife. They are not however found, 

 as the spinelle of this locality, in carbonate of lime. Con- 

 sidering therefore this mineral as new, I propose to call it 

 Pseudolite, in allusion to its affinity to the pseudomorphous 

 crystals of steatite. 



In addition to the numerous minerals which have been 

 found at Franklin and Sterling, I would mention the follow- 

 ing as occurring at Franklin. 



Masses of actynolite, of a bright silky lustre, containing 

 short and much modified crystals, the acute lateral edge being 

 in some replaced by three faces and the obtuse angle oblite- 

 rated. This mineral is sometimes associated with phosphate 

 of lime and scapolite. 



Red spinelle, in small scattered crystals, associated with 

 hrucite, heryl, and phosphate of lime, found near the mill-dam. 

 Parallel^ or nearly so to the same ledge, it was also found by 

 Mr. Nuttallin a small specimen which was not ascertained at 

 the time of his publication. 



Amorphous pale yellow blende in a brecciated rock accom- 

 panied by carbonate of lime. 



Carbonate of manganese, a somewhat friable reddish gray 

 ptone, forming a thin bed in (he franklinite at the summit of 



