G. F. Kunz—Minerals from Stoneham, Me. 215 + 
sembles. One vein in quartz with crystals nearly a meter long 
and one-third of a meter across, was traced for nearly forty 
feet, without, however, finding any fine crystals. 
Zircon occurs in crystals from 1 to 15™ in length scattered 
through the cleavelandite. The faces are all dull and the crys- 
tals are occasionally altered to malacon; those observed were 
I, i-< and 1. ; 
Garnet occurs sparingly in poor crystals and is evidently a 
color. 
Cleavelandite occurs by the ton in fine large masses of plates, 
The bursting of the fluid cavities yiah which they are filled ney 
blue topaz, were found. : 
Biotite in slender crystals occurs in the muscovite crystals. 
Very thin cleavages are dark brown by transmitted light. 
One ¢rystal was found enclosed in muscov! 
‘ Margarodite occurs here in abundance, « : 
oil-green color. The form of this mineral is nearly radiated. 
_ “fuscovite occurs in large masses and hexagonal erystals that. 
through the 
are from 2 to 6 inches across, also transparent ro’ 
Prism, and in masses with a fibrous cleavage, in color brown, 
yellow and light green. 
| Damourite—A curved mica occurs in large 8 
_ cross, saucer-like in shape. 
Manganesian variety of the species; it resembles triplite in — 
or 
= 
te. ‘ 
of a light yellowish — 
hells 4 inches \ 
