93S Locaiitka of Minerals, 



Molybdena is found in Shutesbury, Massachusetts, near 

 Northampton, east of Connecticut River, on the land of 

 William Eaton. It is the common sulphuret, but remarkably 

 beautiful and well characterized. Its colour is nearly that of 

 bright lead, very brilliant, smooth, and almost unctuous ; soft, 

 flexible, distinctly foliated, and the folia are very thin, and 

 easily separable, almost like mica. It gives the usual greenish 

 trace on vjrhite 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 between molybdena and plumbago, or 

 black-lead. We have many times applied it with entire suc- 

 cess. 



This 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 call- 

 ed a table. The rock, from which they were obtained, is a 

 granitic aggregate, (judging from the specimen sent, it may be a 

 true granite) and the forms of the crystals are very distinctly 

 impressed in the stone, so that when renvDved they leave an 

 exact copy or crystal mould. In a letter from the proprietor 

 of the land, it is said that 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 S. 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 putting in two blasts, some large pieces 

 were obtained. 



From this account, and from the specimens, (some of the 

 crystals being an inch or more in length) this must be one of 

 the most interesting localities of molybdena hitherto observed 

 in this country ; and it is hoped Mr. Eaton will take some pains 

 to procure and furnish specimens. 



Rose Quartz. — From Southbury, Connecticut, not far from 

 Woodbury, and from the Honsatonuck River, two young men, 

 of the name of Stiles, have brought us specimens of rose 

 quartz, of delicate and beautiful colour. It is said to be abun- 

 dant in a ledge of the same substance. 



