566 Professor Emerson on HaWs Geological Collections. 



83. Magnetite. 



A large mass, weighiug several pounds, part of a large imperfect crystal in 

 quartz. The ore and quartz gangue like that from Ek-ker-lu-zhun. This and 

 the last may be from one of the localities mentioned by Hall in the Narrative as 

 — , page 328 : " This p. m. I visited Cooper's Island, and with chisel and hammer 

 dug out some of the black ore, such as was discovered by Frobisher's Expedition 

 in 1578, with which many of his ships were laden. This ore attracts and repels 

 the magnetic needle about like iron. It is very heavy." The importance of iron 

 ore in itself and its connection with Frobisher's Expedition made Hall care- 

 ful to coUect it everywhere. It is manifestly very abundant both in the gneisses 

 of the region and in separate beds. 



84. Lemonite. 



Several fragments of limonite, cementing quartz and mica, and arising 

 apparently from the decomposition of granitic rocks, and representing a deposit of 

 no great extent. 

 84^. Pyrite. 



A number of fragments in quartz. 



Locality, Frobisher Bay. 



85. Pyrite. 



A large mass of very tough bluish-black quartz, full of pyrite. 



86. Pyrite. 



Three well-worn pieces of pyrite, used by the natives for striking fire. 

 "With these was another piece of magnetite, labeled " Obtained from the natives." 

 Hall also mentions iron j^yrites at Gold Cove, Frobisher Bay (p. 230). 



COPPER ORES. 



87. BORNITE. 



Several pieces of pure bornite, of fine color, and a number of fragments of 

 quartz with bornite disseminated through the mass. 

 French Head, Field Bay. 



88. Bornite. 



A curious pseudo-conglomerate or vein-stone breccia of quartz masses, about 

 the size of peas, cemented by a paste of bornite so abundant as to separate each 

 grain of quartz widely from every other. 



French Head, Field Bay. 



89. Chalcopyrite. 



Several pieces of a granular aggregate of quartz and black hornblende, in 



