REPORT OF THE DIRECTOR AND STATE GEOLOGIST 1902 rl5 



been prepared, colored from the original sections, and will be 

 added to as occasion demands. 



A set of lantern slides prepared from the photographs used 

 in Bulletin 58, was exchanged with the department of min- 

 eralogy of Columbia University for mineral specimens valued 

 at $40. 



The relabeling of the main collection with a view of obtaining 

 a uniformity of label is now in progress, the work on one half 

 of the collection having been completed. 



Field work 



The collecting and reconnaissance work of the division for 

 the past year has been pushed during the open season, and 

 mineral material has been collected as follows: 



1 Tilly Foster mine, Putnam co. Interesting crystals of chon- 

 drodite and magnetite, brucite, magnesite and a good series of 

 serpentine and serpentine pseudomorphs. 



2 New Rochelle, Westchester co. An interesting series of ser- 

 pentine and associated minerals from Davenport's neck. 



3 Ellenville, Ulster co. Specimens of galena, sphalerite and 

 chalcopyrite illustrating the occurrence and association of the 

 lead, zinc and copper ores of this locality. 



4 Ancram, Columbia co. Small but exceedingly interesting 

 crystals of albite, resembling in habit the occurrence of the 

 same mineral at Williamstown Mass. 



5 Staten Island, Richmond co., and Hoboken N. J. A large and 

 complete series showing the derivation of the serpentine of this 

 locality. Advantage was taken of an extensive excavation in 

 the vicinity of Tompkinsville to obtain unaltered material of 

 considerable interest in this connection. 



6 North Russell, St Lawrence co. A contact zone between the 

 gneiss and limestone which has been recently excavated for 

 mica furnished some large crystals of phlogopite, some of which 

 contained pyrite inclusions; also pyroxene in large and, in one 

 or two cases, well modified crystals, apatite, molybdenite, 

 titanite and an interesting occurrence of a feldspathic mineral 

 resembling labradorite. 



