METAMORPHIC ROCKS. 
467 
yellow, xanthite, talc, black spinelle, ruby spinelle, coccolite of a rich green color, sphene, 
scapolite, phosphate of lime, zircon, and bronzite or clintonite,* Granite veins may be seen 
in the limestone a few rods south or southwest towards the tavern. Granite veins were also 
seen in the limestone during the digging of the well of the tavern. Another interesting locality 
is near that first mentioned, a few rods west across the little valley between the ridges. Horn¬ 
blende (massive and crystallized), hexagonal plates of plumbago, coccolite (red and green), 
copper-colored mica, and garnet, red brucite, pargasite and idocrase, are also found at the 
western base of the eastern knoll. 
About one mile southwest of Amity, by the road side, is the locality where the large spi- 
nelles were found in an aggregate of limestone, spinelle, serpentine, brucite, and crystals of 
specular iron ore. The rock was partially decomposed, and hornblende crystals were also 
found there. Some of the serpentine that I obtained at this place was distinctly crystalline. 
“ About three-quarters of a mile southwest of the above locality, in the middle of a bye- 
path leading west from the main road, and distant about forty rods from it, are found hand¬ 
some beryl-colored crystals of apatite, associated with a purplish brown augite, which is 
sometimes in distinct crystals of considerable size, but more frequently in granular concre¬ 
tions (coccolite). In the same connection also occurs a snowy white scapolite, not well crys¬ 
tallized, together with crystals of plumbago. These minerals are imbedded in the limestone, 
in a vein-like cavity.” “ It is not rare to find, in the limestone, partial veins of scapolite in 
this vicinity.”! 
About half a mile north of the last locality, are greyish red spinelles in octohedrons and 
hemitrope crystals of a large size. The crystals are often coated with a saponaceous or stea- 
tiiic coating, and present various shades of green, yellow and black. Crystals of serpentine 
of a tabular form, and in the incipient stages of decomposition, occur. Sphene and augite 
also occur here, similar in aspect to the specimens from Rogers’ rock on Lake George,! 
A locality about half a mile southeast of Amity, affords brown spinelle in large octohedral 
crystals. The cavities in some of the crystals of spinelle are lined with small crystals of 
corundum. The same rare mineral is also attached to grey hornblende in loose masses.! 
One mile south of Amity, the spinelles abound, and the mineral called warwickite is also 
found in the limestone at this place, Brucite in large masses may be obtained from the soil 
where the limestone has decomposed, a few rods farther east. 
A locality one mile north of Amity, shows the limestone filled with brucite of various 
* This mineral was first found by Dr. Horton, Mr, John Pinch and myself, in the summer of 1828. We conceived 
it to be a new mineral, and gave it the name of clintonite. It was afterwards described by Mr. Pinch, under the name 
of bronzite, which he then believed it to be. It was afterwards called seybertite, and afterwards Tiolmsite. As one of the 
original discoverers of the mineral, I claim the name originally given, in honor of our distinguished statesman, scholar, 
and man of science, De Witt Clinton. Another mineral, since the above note was written in 1838, has been called 
clintonite, but this has the priority. Mr. Pinch’s article, describing the mineral, is in the American Journal of Science, 
Vol. 16, pp. 185, 186. 
t Shepard, American Journal of Science, Vol. 21, pp. 230, 231. 
59* 
