154 



NE\V YORK STATE MUSEUM 



June, 1884, page 479. The specimen was formerly in the Yale 

 collections and it certainly is an unusually fine crystal. 



In later years the workings in the Smith mine, through the Cook 

 shaft have brought up much coarse pegmatite in which there are 

 at times great quantities of large allanites, some of which almost 

 equal the dimensions given above. They are not always, or not 

 very often well terminated, and being embedded in quartz and 

 feldspar, and being withal extremely brittle they require great care 

 and patience for. their safe extraction. A series of the best secured 

 by the writer were placed in the hands of Heinrich Ries in 1898, 

 and were by him figured and described in the Transactions of the 

 AVtc York Academy of Sciences, volume 16, pages 329-30. iJ 

 The two figures, drawn by Dr Ries are here reproduced. 



31 ' 32 



100 



^ 



HL 



Figs. 3: 



32 Allarite crystals from Cook shaft of Smith mine, Mineville (after 

 Heinrich Ries) 



Amph'ibole. The most attractive member of this group is a 

 light brown variety which is occasionally well developed in the 

 quarries in the Grenville, north of Port Henry. The crystals up 

 to an inch in length by a half inch in the long diameter have grown 

 from bunches of silicates into a cavity which has afterward been 

 filled with calcite. When the latter is dissolved away, the former 

 remains in almost perfect development. A sharp prism and both 

 the orthopinacoid and clinopinacoid make up the vertical zone, and 

 the terminal faces are a pair of pyramids. 



Dark green or black amphibole is common in the coarse pegma- 

 titic aggregates associated with the magnetites on Barton hill. 

 Where it abuts against quartz, it develops the face of the unit 

 prism, but as a rule only cleavage pieces can be obtained. 



Apatite appears in great quantity in ■ the rich phosphorus ores 

 of the Old Bed series at Mineville. The grains may reach a 

 quarter of an inch in diameter and are usually of a red color 

 from infiltrated hematite. They impart a red color to the ore 

 itself and thus produce the variety known as red ore. This 

 variety of apatite is separated in the mill and sold for fertilizer. 



