338 dopaz. 
‘Tt ought not to be forgotten, that in Europe, the topaz is 
Spork associated with tix. Perhaps this important metal 
accompany this oa in its known rie sc exist here in 
very considerable abundance; such as arsenical iron, the 
ores of ms my quartz, topaz, hornblende, EP and the 
— of lime 
ee aM 
4, Geological Sduation.* 
"We have not visited the locality of this mineral, but it occurs 
ina a magnificent vein of fluor spar, consisting principally of that 
variety called the chlorophane. Itisin Monroe, next to the town 
of Huntington, 20 miles west of New Haven ; the vein of fluor 
spar traverses granular limestone in gneiss. Of this vein you 
have given a description in the second Vol. of the American 
Journal of Science, page 142. Some specimens in our pos- 
session exhibit the fluor spar on one side, and this | ‘mineral on 
the other. ae and a Cneemaish talcase mineral, which we 
acaplbely: 3 our ekest serva ania: 
: WARD HITCHCOCK, 
Sg: eet Professor Peat aati Sc. in Amhers t College, Mass, ; 
SILLIMAN, 
SNJAMIN D. 
ie all oy $1 tn 
ee 
are 
~The locality 0 of 
ead cmoally ead L Lane’s mine, but it oa ebia te 
every sense. 
. 
