238 Localities of Minerals. 
Molybdena is found in Shutesbury, Massachusetts, near North- 
ampton, east of Connecticut River, on the land of William 
Eaton, It is the common sulpburet, but remarkably beautiful 
and well characterized. Its color is nearly that of bright lead, 
very brilliant, smooth, and almost unctuous ;: soft, flexible, dis- 
tinctly foliated, and the folia are very thin, and easily separable, 
almost like mica. It gives the usual greenish trace on white 
pottery, while a line drawn parallel on the same basis, by a piece 
of plumbago or black-lead, is black; this being (as pointed out 
by Brongniart) the easiest criterion, by which to distinguish. be- 
tween molybdena and plumbago, or black-lead. We have many 
times applied it with entire success. 
his molybdena, from Shutesbury, is chiefly crystallized, and 
the crystals are, in some instances, very distinct; their form is 
that of a flat six-sided prism, or what is commonly called @ table. 
The rock, from which they were obtained, is a granitic aggre 
gate, (judging from the specimen sent, it may be a trae granite) 
and the forms of the crystals are very distinctly impressed in the 
stone, so that when removed they leave an exact copy or crystal 
mould. In a letter from the proprietor of the land, it is said 
(hat the molybdena is found in a ledge of rocks, six or seven feet 
above the surface of the earth, and about ten or twelve feet 
above the level of the water ; the direction of the rocks is from 
8. to N. E. by N.; the metal is in a vein, running E., and was 
discovered in small pieces in the top of the ledge. After put 
ting in two blasts, some large pieces were obtained. 
From this account, and from the specimens, (some of “ath 
crystals being an inch or more in length) this must be one of the 
most interesting localities of molybdena hitberto observed it 
this country; and it is hoped Mr. Eaton will take some pains 
procure and furnish specimens. 
Rose Quartz.—From Southbury, Connecticut, not far from 
Woodbury, and from the Housatonuck River, two young men, of 
the name of Stiles, have brought us specimens of rose quart2s ll 
delicate and beautiful color.’ It is said to be abundant in @ ledge 
of thé same substance. =~ 
