Miscellaneous Localities of Minerals. il 
tinct, from the strong contrast between its bright bottle green 
colour and vitreous lustre, and the gray earthy appea ance 
of the mineral it is imbedded in. It generally presents 
groups of compressed'crystals, which either diverge from a 
centre or are promiscuously interlaced. It is fully equal 
to any I have ever seen. 
Respectfully your servant. 
=o, By E. Emmons. 
Curster, Mass. August 6, 1825. 
‘Dear Sir, ; 
During the last Spring, the following minerals were ob- 
served by me in this vicinity in addition to those heretofore 
noticed. 
1. Heulandite, (Foliated Stilbite,) in right oblique angled 
prisms, which is the primitive form. ‘The greater angles 
were found by an attempt at measurement to be 130° and a 
few minutes, approaching so near the measurement given in 
Brookes’ Introduction to Crystallography, that all doubts re- 
specting the mineral vanish. Modification — Acute edges of 
the prisms replaced by single planes. ‘The mineral possesses 
a high pearly lustre, and a foliated structure. Folia often 
waved or undulated. Colour white. Geol. Sit.—Heulandite 
is found associated with chabasie and stilbite in mica slate, 
Chester. 
2. Pimelite, (Nickel colouring clay.) As yet I have dis- 
covered only small quantities in Cavities in stalactical quartz ; 
colour, fine grass green. The masses when first broken, pre- 
sent a granular structure ; when dry, become compact, and 
full of cracks and fissures. Geol. Sit. Occurs in quartz con- 
nected with serpentine, Middlefield. 
3. Pinite, generally in amorphous masses, in granitic veins 
traversing mica slate; one large crystal has been obtained, 
measuring 21 inches in diameter.—Not abundant. 
4. Pargasite. In short green crystals, in carb. of lime, 
associated with idocrase and epidote, Chester. Not abun- 
dant. 
