RHODONITE. RHODOCIIKOSITE, AND COTICULE. 171 



the high bluftsovedooking the road east of M. V. Cressy's "second pasture," 

 where for a long distance along the strike, in an area 20 rods in width, the 

 chlorite-schist is crowded with pyrite in large, rougli-faced cubes two-thirds 

 of an inch across. One layer nearh' a foot thick has been opened. 



COPrER OUKS. 



The pyrite beds usually carry a small percentage of chalcoi)yrite. 

 Copper is said to have been mined in a small way northwest of M. 

 Stetson's and northeast of P. Packard's, in Plainfield. In an opening made 

 by M. V. Cressy in the pasture north of II. Baker's, where the sericite- 

 .scliist is much impregnated with granitic material, boniite is quite abun- 

 dantly disseminated in small grains, partly changed to malachite; and 

 farther north in Charlemont, back of the house of G. Veber, on a blind road 

 running north from the river road, liornite appears in masses an inch across. 



THE GREAT HAWLEY FAUIiT AISD THE MAGNETITE AKD HEMATITP: 

 DEPOSITS, THE RHODOXITE AND RHODOCHROSITE BEDS, AXD 

 THE GARNET-SCHIST OR COTICULE. 



The mineral rhodonite has been found for many years in large bowlders 

 in Cummington, near the Bryant homestead, and it has, in fact, been called 

 cummingtonite from that circumstance. Within a year or t\^'o state- 

 ments have appeared in ])rint to the effect that the ledge from which the 

 bowlders had been derived had been found on the Bryant road in ( ,'um- 

 mington. On investigating the trenches I found that thev clid not reacli anv 

 ledge there at all, and taking the direction of tlie glacial stria* I soon found 

 the ledge 2i miles distant to the northwest, in Plaintield. 



(_)n the road running north, up the hill from West Cummington, at the 

 house of T. Williams, now occupied by Henry C. Packard, about 3;") rods 

 south of the house and 10 rods west, a garnetiferous sericite-schist (Savoy 

 schist) on the west abuts against the chlorite-ankerite-schist on the east, and 

 a band 8 rods wide is tilled with veins of quartz, quartz and magnetite, 

 and quartz and rliodonite. Some of the latter are 3 feet wide, of the 

 finest and deepest color, often blackened at the surface. All the varieties 

 found in the bowlders on tlie Bryant road in Cummington can be found in 

 place here. The line between the two has the direction of the glacial striiP 

 of the region, and this localitv is doubtless the source of all the Cummington 



