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DESCRIPTIVE MINERALOGY. 
li 
ALBITE. 
[From the Latin albus, white; because the specimens found were of a white colour.] 
Albite. Phillips, Thomson and Beudamt. — Tetarto-Prismatic Feldspar, or Albite. Jameson. — Tetartoprismatischer 
Feld-Spath. Mohs. — Variety of Feldspar. Cleaveland. — Cleavelandite. Brooke and Levy. 
__F‘S- 325 . Description. Colour usually white; sometimes grey, green or 
brown. Streak white. It occurs regularly crystallized, frequently in 
f't __ / twins; also massive and disseminated. Primary form a doubly ob¬ 
lique prism. Fig. 325. M on P 93° 30 / ; M on T 117° 53' ; P on 
T 115° 5k Cleavage perfect parallel to M and P, less so to T. 
Fracture imperfectly conchoidal. Lustre pearly upon cleavage plane, 
vitreous in other directions. Transparent to translucent on the edges. 
Hardness 6.0. Specific gravity 2.60 to 2.68. Its behaviour before 
the blowpipe is similar to that of feldspar. 
Composition. Specimen from Chesterfield , Mass. — Silica 70.68, alumina 19.80, soda 
9.06, lime 0.23, oxide of iron and manganese 0.11 ( Stromeyer ). 
Geological Situation. Albite often forms a constituent of greenstone and granite, and is 
sometimes associated with common feldspar. 
localities. 
According to Dr. Emmons, much of the granite at Gouverneur, in St. Lawrence county, 
contains albite.* Beautiful white and transparent crystals, often twins, have been found in 
Granville, Washington county. The specimens, for which I am indebted to Dr. Emmons, 
exactly resemble those obtained in the vicinity of Castleton, Vermont. 
In Massachusetts, albite is found in crystals, at Williamstown, Chesterfield and Goshen. 
The crystals are often of considerable size, and twins are not uncommon. 
STELLITE. 
[From the Greek grsXka, a star ; on account of the star-like arrangement of its crystals.] 
Stellite. Thomson, Dana and Mohs (App). 
Description. Colour snow-white. It consists of a congeries of small crystals issuing 
like rays from several centres. The primary form seems to be an oblique four-sided prism, 
but the angles cannot be measured. It is tough, and has some resemblance to asbestus and 
the nemalite of Mr. Nuttall. Lustre silky, shining. Translucent. Hardness 3.25. Specific 
New-York Geological Reports, 1838. 
