On the Geology and Mineralogy of Schoharie, N.Y. 175 
pear in superposition, as follows; water-lime—corniferous limerock 
and soft argillaceous slate, (second greywacke) traversed by the 
Heavy Spar and fibrous Arragonite. This locality was visited by 
Prof. Earon about fifteen years since, who then pronounced it Heavy 
Spar, without distinguishing from it the fibrous Arragonite. Recent 
examinations prove the slate to be between ten and fifteen feet thick, 
and traversed in numerous veins by the same mineral. One mile 
south, the Heavy Spar is found unaccompanied by rocky strata. 
In 1829, Joun Gesnarp, Jr. discovered No. 1 a locality of acicu- 
lar Strontianite ; and having no means of analysis, pronounced ‘it 
Caleareous Spar. Soon after, he found specimens of a clayey lime- 
rock with small crystals imbedded near the surface. Also incrusta- 
tions were found on the blue limerock, consisting of minute crystals, 
diverging and radiated, and penetrating the rock. These indications 
invited more critical investigation, which terminated in the discovery 
of No. 3 of massive Strontianite and Heavy Spar, about half a mile 
distant from the former locality. It was then ascertained that these 
localities were situated in the water limerock, by pursuing which, he 
discovered Nos. 2, 4 and 5. 'The above embrace all the important 
localities. ‘There are others, particularly No. 6 on the north side of 
the Foxes Creek, all referable to a knowledge of the gangue for their 
discovery. No.7 (the marble quarry) was discovered about twenty 
years since, and soon after the above discoveries, was examined by 
Joun Gesuarp, Jr. and others ; and being found connected with the 
water-lime, it was regarded as a similar mineral. 
The locality of Iron Pyrites, one mile west of the Court house 
extends along the west bank of the river about one hundred rods, 
with perpendicular strata about thirty feet in height. The upper 
Stratum is shelly limerock, reposing on silicious limestone, associated 
with a dark, oolitic rock colored by the Pyrites; below this, ts 
a soft, blue slate from ten, to fifteen feet in thickness, within which 
is the chief deposit of the mineral ; it is traversed by a thin vein of 
‘ous Heavy Spar. By sinking a shaft eight feet lower in search 
of ‘coal, a black, soft, ‘olazed shale (bituminous) was found, al- 
ternating with the silicious limestone ,and oolitic rock. Below 
the upper stratum, no organic remains are found. ‘This locality 
exhibits the Iron Pyrites in numerous forms. About one half of a 
mile north, the Iron Pyrites is found accompanied by similar strata. 
About four miles distant on the banks of the Cobleskill Creek in a 
north west direction, they are found in a similar state with the like 
