248 Miscellaneous Localities of Minerals. 



a partial or superficial examination, would never enable us 

 to detect them.* 



2. Carbo'silicate of Manganese ? Considerable quantities 

 of a mineral occur at Tower Hill, in Cumberland, which we 

 judge to be the above named variety of manganese. It is 

 mostly massive, having generally an uneven cross fracture, 

 though someiimes it is nearly smooth. The colours are vari- 

 ous shades of red, yellowish brown, Sec. Some of it is of a 

 delicate pale rose red, has a crystalline laminated structure, 

 is translacent, and presents somewhat the appearance of feld- 

 jspaT. The massive, when broken in a longitudinal direction, 

 is found associated with, calcspar, sulphuret of iron, prase, 

 and actynolite ; the latter often terminates with it in narrow 

 stripes and bands, giving to the mass a fibrous appearance. 

 The whole is covered with a black substance, often of con- 

 siderable thickness, and mostly crystallized, which is also 

 probably manganese. Both of these will be more particu- 

 larly examined. 



3. Jasper ; somespecimens of a very fine deep green colour 

 were obtained by Mr. John Pedrick and myself, while on an 

 excursion through Saugus, Mass. 



I am sir, very respectfully, yours, &c. 



THOMAS H. WEBB. 



Providence, March 11, 1825. 



3. By Charles U. Shepard. 



I. Anthophyllite. Mr. Alonzo Chapin has lately presen- 

 ted me with specimens of a mineral, that he has discover-^ 

 ed, in considerable abundance, in the town of Blandford, 

 (Mass.) which I find to be very well characterized antho- 

 phyllite. The following is a description of it. It occurs in 

 a green talcose rock, having a slaty structure, with veins 

 of blackish serpentine running through it, occasionally, in 

 various directions. It is both massive, and in long acicular 

 prisms, which are generally disposed in a radiating form. 

 Its naasses possess a highly crystalline structure, and very 



* Should any gentlemen desire a specimen of this, and wish to ex- 

 change minerals, for such as occur in this State, by forwarding- a box, 

 for me, to the care of Peter Grinnell & Son, South Main-street, or for 

 Mr. Owen Mason, No. 10 North Main-street, they will meet with ^ 

 suitable return. 



