16 AMhiscellaneous Localities of Minerals. 
ing off into black or brown, and are esa = Ml in connexiort 
with the red and green tourmaline. 
7. Tabular crystals of this kind are mostly found imbedded 
in mica, and are from one to three inehés “in length, its 
general appearaiice being almost a velvet black, except the 
edges, which are translucent, and transmit a pale green light 
bordering on blue. Some - cal : this kind exhibit a 
pi polish, and are extremely handso 
» Rubellite—It is mostly found achotee in crystals of 
tbe greet tourmaline, or else encrusted with that on its sur- 
face, and varies in its colour from a pink to a deep crimson 
red ; some are found very beautiful. 
9. White Tourmaline.—It has longitudinal striz, and like 
the others becomes electric ty friction ; most of them are 
slightly tinged with red. 
10. Ltlac coloured Mica, This is found in small globular 
concretions, aanceh of minute folia, placed one upon an- 
other so as to form short columns, situate mostly parallel 
to each eiBer, and held together by a siliceous cement, in 
which are discovered’ small crystals of quartz, and occasion- 
ally of the tourmaline. These folia are easily had Seat from 
eo other, end aa to be hexeedral tables 
. Lilac coloured Mica.—This kind, possessing a bright- 
er rated otcurs in more massive forras, atid with larger 
folia, and is found in connexion with a beautiful laminated 
12. Prismatic Mica is found in long capillary threads, on 
the edge of the common mica, resembling much the fila- 
ments of amianthus, and in some instances “exhibiting itself 
in the form of long prismatic tables. 
* Mica is also found at the same place, crystallized in beau- 
tiful hexadral pyramids. Similar crystals of black mica 
are also found imbedded in white. Large plates of white 
laminated mica are also found here, measuring six inches by 
op 
* 13. This specimen exhibits partially the gangue in which 
the —— are foun 
oie , Faickse! Hie —Specimens of this kind of the 
und very plenty here in almost every ledge, 
me sommetianee _ beautiful. They are frequently. be- 
tween three e and four inches in diameter, and more than one 
foot in length, Viduie most of the forms mentioned by 
Cleaveland, 
