Localities of Minerals in Massachusetts. 21 
ity will ever be exhausted. It has a threefold cleavage, is is 
brittle, more or less translucent, and its chemical chara 
ters answer “4 spodumene. But its general a is 
brownish white, sometimes clove brown; and in this re 
spect it does not agree precisely with the Swedish aiviaal 
Yet not unfrequently itis beautifully tinged with green, and 
cannot be distinguished from the European specimens. It 
exists in laminated masses in coarse granite, sometimes 
three or four inches across and from 12 to 18 inches in 
length ; though it is not easy to detach specimens of this 
magnitude entire. I cannot state positively the geognostic 
relations of this mineral, as it has hitherto been noticed 
only in bowlders. Yerat its principal locality, those bowl- 
ders are so piled upon one another, and so few of them 
are rounded, that it is obvious to any one acquainted with 
the position of reg ci ene Saad that they con- 
stitute the upper ous vein, or bed, or 
protruding mass of g ane nos Pi 
Pyrophysalite. 
Dr. Wright of Seiad pointed out to me a mineral at the 
locality of indicolite, green tourmaiine, rose mica, &c 
in that town, which he informed me was denominated by 
Mr. Nuttall, the variety of topaz described by mineral- 
ogists under the above name. Its colour is white, tinge 
= green, and on hot iron it phosphoresces very distinctly, 
a yellowish green light, and loses its colour. Itis 
pres or only slightly translucent. It is distinctly crys- 
tallized ; -_ from the few specimens I obtained, I could 
not determine the form. 
The soncipel locality of the well known Goshen m insets 
indicolite, green tourmaline, &c. is about three miles north 
west of the meeting-house, on what is called the Week's 
arm. They occur, as nearly as I could ascertain, in a huge 
vein of granite in mica-slate—although it is only from the 
loose bowlders that they have hitherto been obtained. 
— we find promiscuously blended, the green and 
ack tourmalines, indicolite, spodumene, green and rose 
mr silver coloured mica, Everest beryl, and folia- 
ted and granular cleavelandite. I noticed also some speci- 
mens of beautiful white talc, which I believe has not been 
credited to this locality. 
