SYNONYMES, AND PRIMARY FORMS. 483 



Nephrite, see Jade. 

 NICKEL, arseniate. 



colouring clay or some other substances ; Pimelite, 



arsenical. 



, antimonial 



oxide ; black. 



sulphuret of Nickel, Arsenic and Iron. 



Nickel, Antimony and Arsenic, 



Nigrine, see Titanium. 

 Nitre, see Potash, nitrate. 

 Nosin, see Spinellane. 

 NOVACUUTE ; Turkey stone, 



O 



OBSIDIAN ; Volcanic glass. 



in small rolled fragments ; Marekanite. 



fibrous. 



amorphous. 



Ochre, see Iron, oxide. 

 Ochroite, see Cerium, oxide. 

 Octahedrite, see Cerium, oxide. 

 ODERIT ; probably Black mica. 

 Oisanite, see Titanium, oxide, anatase. 

 Oligiste Iron, see Iron, oxide. 

 Olivenit, see Copper, arseniate. 

 Olivin, see Peridot. 

 Omphazit, appears from the specimens sent here, to be a 



mixture of Garnet, and that variety of Amphibole called 



by Haiiy Green diallage, and probably Cyanite. 

 Onegite ; perhaps an ore of Titanium. 

 Oolite, see Lime, carbonate. 

 Opal, see Quartz. 

 Ophite, see Serpentine. 

 Orpiment, see Arsenic, yellow sulphuret. 

 ORTHITE. 



Orthose, see Felspar. 



OSMIUM ; occurs alloyed with Indium, which see, 

 Osteocolla, see Lime, carbonate, incrusting. 

 Otrelite, see Schiller spar. 



P 



Pagodite, see Agalmatolite. 

 PALLADIUM, native. 

 Paran thine, see Scapolite. 

 Pargasite, see Amphibole. 

 Paulite, sec Hyperstene. 



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