COLLECTIONS IN ECONOMIC GEOLOGY AND :METALLURGY. 117 



NEW YORK. 

 CLINTON COUNTY. 



Fourteen specimens represent the Chateaugay Mine, at Dannemora, 

 taken June 8, 1881._ 



(1) Magnetite, containing pyrite, and feldspar. (4084G.) 



(2) Magnetite, containing quartz, and feldspar. (40S.')0. ) 

 (:i) Magnetite, containing quartz, and feldspar. (43720.) 

 (4) Impure magnetite, containing much pyrite. (05379.) 

 (.">) Magnetite, quartz, feldspar ; furnace ore. (43720.) 



(6) Magnetite, and quartz ; concentrating ore. (4371'J.) 



(7) Magnetite, and dark green silicates of iron; concentrating ore. (65378.) 



(8) Magnetite, scattered through a large amount of gangue. (40851.) 



(9) Gangue, tine grained, containing considerable magnetite. (43718.) 



(10) Gangue, containing some magnetite. (65.380.) 



(11) Gangue, coarse grained, containing a little magnetite. (65381.) 



(12) Wall rock, gray. " Williams Pit." (43721.) 



(13) Wall rock, pink. " Williams Pit." (6.''i383.) 



(14) Gangue, coarse crystals of feldspar, pyroxene, aud quartz, containing a little 

 magnetite. " Williams Pit." (43722.) 



Nine specimens represent tbe Arnold Hill Mine, An Sable, taken June 

 4, 1881. 



(1) Magnetite, containing a little apa- ' (5) Martite. (40842.) 



tite. (40839.) ' (6) Magnetite and qnartz. (40833.) 



(2) Magnetite. (40838.) (7) Magnetite and quartz. (40837.) 



(3) Magnetite and quartz. (40827.) (8) Rock, from dike. (40835.) 



(4) Magnetite and quartz. (40831.) ! (9) Rock, from wall. (40816.) 



(1) Magnetite, quartz, aud feldspar. Palmer Hill Mine, Blackbrook. (40840.) 



ESSEX COUNTY. 



Twenty-sex'en specimens represent tbe Mount Moriah District, tbe 

 first fifteen being from tbe Clieever Mine, Moriab; taken May 20, 1881. 



(1) Magnetite, containing apatite. (43760.) 



(2) Magnetite, apatite, and quartz. (41960.) 



(3) Magnetite, containing apatite and calcite. (43762.) 



(4) Magnetite. (.43759.) 



(f)) Magnetite, pyroxene, apatite, and feldspar. (43756.) 



(6) Magnetite. (40897.) 



(7) Magnetite. (40899.) 



(8) Magnetite. (40907.) 



(9) Hanging wall, containing much magnetite. (4.3765.) 



(10) Granitic wall rock, containing considerable magnetite. (43757.) 



(11) Granitic wall rock, containing some magnetite. (43763.) 



(12) Granitic wall rock, containing much magnetite. (43761.) 



(13) Slickensides, from face of fault. (43764.) 



(14) Slate, from face of fault. (43758.) 



(15) Slate, from face of fault. (436750 



(16) Magnetite aud quartz. New Hed Mine, May 27, 1881. (40904.) 



(17) Magnetite. Mineville Mine, " Old Hed ". July 7, 1881. (41965.) 



(18) Magnetite. Mineville Mine, " Welsh Shaft". July 7, 1881. (40893.) 



(19) Magnetite, apatite, decomposed feldspar. Mineville Mine, "WelsJi Shaft". 

 July 1, 1881. (40896.) 



