and the Results of its Alteration. 283 
unique among that group of minerals in containing alkalies, 
(see analyses of dickinsonite and fillowite in our earlier papers) 
would almost prove this. The lithiophilite may be then the 
original phosphate of manganese from which the others have 
been derived. We shall return to this last subject at some 
future time. 
A few additional remarks remain to be made. The cymato- 
lite has been ~— to pei ther change beyond that already 
described. The result is to lead to the formation of a soft 
soapy white saindail filled shes scales of mica, and obviously 
is known that kaolin is formed from the soda-feldspar as well 
as the potash-feldspar, and the finely divided state in which the 
albite exists in the cymatolite would make it shed liable to 
undergo the well ingame change leading to kao 
ssociated with the soft, partially kaolinized etiamelina ¢ is 
an oer pink clay-like mineral, close related to mont- 
il 
in one spot to fill an ordinary cart. It also ee 
the vein material, filling cavities in the unaltered albite 
quartz. It is quite impure, often sap pg in spots with man- 
ganese oxide, and contains crystals of apat 
When first exposed it was moist and on easily crushed 
between the fingers, and in the purest parts entirely free from 
gritty material when placed in the mouth. pon being ex- 
posed to the air for some weeks it lost much of its moisture 
and hardened considerably. 
The color is a delicate rose-pink, growing somewhat lighter 
on being exposed to the air. It is easily fusible, B. B. 
n analysis of the air-dried material was made ‘by Mr. Horace 
L. Wells, with se following results :— 
rs Mean. Ratio 
SiO, a §1°19 51°20 *853 
Al,O3— 22°07 22°20 22°14 118 
FeO tr. a tr. 
MnO O16 0°20 0718 002 
MgO 3°76 3°68 3°72 “091 
CaO 3°55 3°51 3°53 “030 130 
Li,O tr. tr. 
Na,O 0°18 0-18 003 
a 0°38 0°38 “004 
H,O 17-11 17°04 17°08 955 
P,O; 1°40 1°43 1°42 
