DEc., 1908. MINERALOGICAL NOTES 157 
PHENACITE 
NORTH CHATHAM, NEW HAMPSHIRE 
The first published mention of phenacite from this locality seems 
to have been by Kunz in 1890* This brief mention may be repeated 
here: } 
“In May, 1888, E. A. Andrews, of Stow, Me., discovered some 
crystals of phenacite on Bald Mountain}, North Chatham, N. H., near 
the State line be- 
tween Maine and 
New Hampshire 
and in the neigh- 
borhood of Stone- 
ham, Me. They 
were found in a 
vein of coarse 
albitic granite, as- 
sociated with crys- 
tals of smoky 
‘quartz, topaz and 
muscovite, some 
implanted on 
smoky quartz, and a few attached so loosely to the matrix by one 
of the rhombohedral faces that they could be removed without being 
broken. They were about fifty in number, lenticular in shape, and 
measured from % inch to % inch (3 mm. to 12 mm.) across, and 
from 1-25 inch to % inch (1 mm. to 3 mm.) in thickness. They 
were all white or colorless, with polished faces, and for the most part 
very simple in form.”’ 
No crystallographic investigation seems to have been undertaken 
by Kunz and no further mention of the occurrence has been made so 
far as the writers are aware. The Museum is in possession of three 
specimens of phenacite from this locality. In two of the specimens 
single phenacite crystals are implanted on crystals of smoky quartz. 
The phenacite crystals of these specimens are about to mm. in diam- 
eter and 5 mm. thick. They are whitish in color and semitransparent. 
They exhibit the lenticular habit mentioned by Kunz, this habit be- 
ing produced by the prominence of the rhombohedron r (1oir). 

Fic. 4. Phenacite. 
* Gems and Precious Stones of North America, 18090, p. 100. 
+ The correct name of the mountain is Bald Face Mountain.—O. C. F. 
