36 Brush and Dana—Feairfield County Minerals. 
cage gravity, three perfectly pure rose-colored specimens 
gave 3:124, 8:134 and 3:145; mean 3:134. The luster of crys- 
a hae specimens is vitreous to sub- -resinous, upon cleavage 
surfaces exceedingly brilliant; of the massive mineral often 
reasy. The color of the crystals is pink, some having the 
bright shade common in rose-quartz, while others are paler and 
have a yellow to gray hue; the smallest crystals are nearly 
colorless. The massive compact mineral is pale pink, also 
grayish-, bluish-, and yellowish-white, and white. me vari 
eties closely resemble in color and luster green eleolite ; the 
green color, however, is shown by the examination of thin sec- 
tions under the microscope to be due to finely- -disseminated 
scales of dickinsonite. ae varieties again are rendered 
impure by the presence of quartz through the mass, and they 
then have a whitish color and granular texture; this subject 
is expanded in a later para 
The mineral is transparent to translucent. The er is 
nearly white, and the fracture uneven to subconchoi 
Description of erystals—Specimens of crystallized eosphorite 
are rare. The most of those obtained seem to have come from 
one cavity, the crystals standing free, and projecting to some 
len me they are found eres imbedde as, for in- 
Childrenite, Hebron, Me. Childrenite, Tavistock. 
stance, in Acland These crystals are in general small; but 
occasionally imperfect crystals of a considerable size are met 
with, one of these ex a width of about an inch, and is two 
inches long; in another, a single plane has a width of nearly 
two ee oe planes are seldom well polished, and only in 
measurements obtainable. This is due in 
gives rise to rounded bated: ape Reena analogous to > ines 
observed of tourmaline and many other species 
