64 The Ottawa Naturalist. [Aug.-Sept. 



ScAPOLiTE, Macdonald Island. 



This mineral occtirs in crystals some of which are five 

 inches in diameter. The only forms observed are the 

 prisms (100) and (110) and the unit pyramid of the first 

 order (111). The mineral is white in colour and possesses 

 a vitreous lustre. 



Rose Quartz, Amadjuak Bay. 



The specimens of this mineral consist of a large number of 

 fragments devoid of crystal form and varying in colour 

 from deep rose to colourless. It is worthy of note that those 

 fragments spotted by lichens and evidently from the very 

 surface are either very pale rose or colourless, while the 

 deeper tinted specimens are usually free from lichens. 

 This contrast seems to give support to the view commonly 

 held as to the gradual bleaching of rose quartz when ex- 

 posed to bright sunlight. 



Graphite, i\.madjuak Bay, North side; Fair Ness. 



This mineral has been reported from this region by several 

 explorers. The graphite from Amadjuak Bay consists of 

 large, flat cleavage plates sometimes two inches in diameter. 

 That from Fair Ness is very pure and more or less coarsely 

 fibrous. The quality of the graphite from both localities 

 suggests the possibility of commercial development in case 

 the deposits are of sufficient dimensions. 



Garnet, Garnet Island (about Long 72° 30', Lat. 63° 45'). 



The rock in which the garnet occurs is somewhat schistose, 

 fine grained and consists almost entirely of small scales of 

 dark biotite and felspar which the microscope shows to be 

 microperthite. The felspar constitutes at least nine tenths 

 of the rock. The garnet is found only in the form of large, 

 more or less rounded crystal masses sometimes four inches 

 in diameter. It possesses a fine, deep blood red color and 

 is so free from cracks that some at least could be used for 

 gemstones.' 



Ophicalcite. 



Pure white calcite is mixed with about an equal amount 

 of very beautiful sulphur yellow serpentine which is remark- 

 able for the uniformity and delicacy of its colour. Un- 

 fortunately, the exact locality of this exceedingly beautiful 

 ornamental stone is not available. 



Serpentine. 



This material is greyish, greenish or yellowish in colour, 

 fine grained and inassive as a rule but sometiines inter- 

 sected by veinlets of chrysotile. 



