74 



NEW YORK STATE MUSEUM 



ROCBXAND 



319 

 330 



331 



333 



Orangetown (continiied) 

 Piermont, excavations for the Erie 

 R. R. (contimied) 



Stony Point 



Dunderberg mine n. side Dunderb'g mt 

 Stony Point, north shore 



333 



Tomkins Cove 



2im. n.w. Grassy Point. . . . 



Canton 



Pyrite mines 2m. s. Canton 



334 



33d 



De Kalb 



3m. s. DeKalb Junction. 



thomsonite. 

 chabazite. . 



calcite 



tourmalin.. 



magnetite, 

 zoisite. . . . 

 pyroxene . 



amphibole . 

 titanite. . . . 



pyrite 



chrysolite. . 



garnet 



staurolite. . 



calcite 



barite 



amphibole . 

 orthoclase. , 

 epidote. . . . 



5m. s.w. DeKalb June. (Mitchel farm). 



pyrite 



chalcopyrite 

 hematite . . . 



calcite 



serpentine . . 



talc 



tourmalin. . . 

 titanite .... 

 pyroxene . . . 



datolite .... 

 pyroxene , . . 



calcite 



quartz 



DESCRIPTION 



in minute crystals. 



lean ore. 



green augite. 



hornblende, light green . 



small crystals. 



minute crystals 



white and yellowish crystals 



minute tabular crystals 



radiated and interlaced actinolite. 



minute crystals 



small granular masses 



ST LAWRENCE 



rensselaerite. 

 brown , 



diopsid, transparent crystals 



rare 



diopsid 



crj'stallized and massive. . . . 



