wicdLiiswoiMii: siiiu'i ;.\ Ti M ;s oi' \i;mi()N"r. 00 
9. Roxburi/. TliirttTii and one hall' miles north of Rochester, just 
soutli of tlie \illaj,a' of West Koxhury on lln- ( 'eiitral X'erinont 1{. 11. 
Length indefinite hut not large. 
10. Northfichl. Vwc and a half miles noi-th of the Koxliury area, 
near west boundary of the town. Length, IL'.') yds., width 5 yds. 
//. l)uxJ)urii. Six mill's north-northwest in the southeast corner of 
the town. .\t)out one mile long. 
12. Morctuu'ii. Four and a half miles northeast, just south of the 
Winooski River. Length indefinite. 
13. Watrrburi/. About six miles further to the north-northeast, 
in the northeastern part of the town of Waterhury, is tiie most typical 
area of .serpentine in \'erniont. It is of medium size, ahout KiOO feet 
long and 325 feet wide. It lies in an open pasture as a low hill practi- 
cally free of vegetation. This feature, in addition to the fact that it 
is typical of nearly all the other occurrences, led to a detailed study of 
it. The results are l)riefly gi\en here, and may be considered in a 
general way, as api)lying to all the areas mentioned. 
Both steatite and serpentine are found here intimately associated, 
but always separated by a sharp contact. The amount of steatite 
is relatively greater than that of serpentine; the latter composes the 
greater part of the west side of the area, but on the east side occurs 
only as lenses in the steatite. Such lenses have their long axes parallel 
to the long axis of the whole area, and rise slightly above the steatite, 
owing to the greater resistance to weathering. 
The serpentine itself varies in color from dark green to light green 
in accordance with the amount of magnetite present. The two colors 
may often be seen in the same specimen. When weathered, the 
serpentine takes on an ash-gray color. This is the typical color on 
weathered surfaces, except where magnetite is very abimdant, and 
so causes a brown color. In addition to magnetite, which is some- 
times in small veins but more often disseminated, rhombs of dolomite 
are common. Some veins of talc and .some of fibrous chrysotile are 
found in the serpentine, but these are always small. In places the 
serpentine is sheared ; this causes a coarse fibrous structure. 
The steatite on the east side extends further north than the ser- 
pentine, and so forms the northern end of the area. When fresh the 
color of the steatite varies from a light to a dark gray, often with a 
greenish tinge, but on the weathered surfaces it becomes brown. Mag- 
netite and dolomite are present as well as other impurities. Some 
