252 Lead Mines, &c. of Hampshire County, Mass. 
phous, which is its general er although it is often 
laminated and sometimes cellu 
Enough choice specimens lind be here obtained for all the 
cabinets in America. In the barytes are often seen druses, 
lined with quartz crystals ; galena and blende are dissemina- 
ted in the barytes, sometimes in great abundance, but gene-- 
rally in small quantities. The blende is of its usual resinous 
aspect, and considerable in proportion. The galena is in 
cubic masses, from the tenth of an inch to two or three in di- 
ameter; sometimes it is foliated, and again it is diffused 
throughout the barytes. 
The next vein marked on the map, is situated three or four 
miles west of the Hatfield locality. Near the east part o 
Williamsburgh it discovers itself, breaking up in granite 
through mica slate. Greenstone and micaceous limestone are 
three or four feet wide; the gangue is quartz, in which i 
Gepemisinjed more or less of the black oxide renga: 
the ground near by these, are blocks of the gangue con- 
taining galena. As usual, the gangue is full of druses, 
studded with quartz crystals, some of which are impe 
amethyst. The direction of the vein where it first makes its 
appearance, is north-west, but it soon turns north, running 
into Whately a mile or more. It then turns ncvih-eitek un- 
der mica slate, and is finally concealed by a hill of green- 
stone. ng the whole distance, the vein may be general- 
ly seen, although it is often concealed for a few rods, by 
geest, but may be easily traced by detached alceks lying up- 
on the ground. As the vein runs into Whately, it contains 
and a ‘imen of barytes near this vein im mica 
ore, 
gS 
This vein, as before 
is in granite,} protruding 
abeve mica slate, 5 ‘tp 
rved, 
‘ereekstons and micaceons limestone ; @ 
one remarkable circumstance is noticed where it first shows 
itself. This is on a hill of moderate elevation, which has 
a ia been lifted up by the granite beneath. The stra- 
a e of mica slate, gees: and micaceous limestone, resting 
uberis eats eo. ave been thrown back almost into a ver- 
teal psn The Se. instead of following the hill in 
‘tudinal direction, cuts almost t directly across it, an¢ 
