Chroinitp. 



Chrompicotite. 



Maguodiromite. 

 Magnesioferrite. 

 Jacobsitc. 

 Magnetite. 

 Franklinite. 



CLASSIFICATION OP MINERALS. 



C. CIIROMIIES ANI> I'KKKITES. 



Group 1. 

 FeCr.^O,. 



MgFe^O^. 



(MK,Mn)(Fo,Mn),0^. 

 FeFe,0^. 

 (Fe,Zii,Mn)(Fe,Mii)jO,. 



765 



Isometric. 



Isometric. 

 Isometric. 

 iHoinotric. 

 Isometric. 



D. MANGANITES. 



Hausmannite. 



Braunite. 



Bixbyite. 



Crednt-rite. 



Chalcopbanite. 



Psilomelaue. 



Litbiopborite. 



Wad. 



Asbolitf. 



Lampadite. 



Varvicite. 



Miuiiim. 



a roup 1. 



Mn:Mn04. 



MuMnO:,. 



FeMnOa. 



2MnMnO,.3CuO. 



(Mn,Zu)MnJH^07. 



Hydrated mangau-mauganite. 



E. PLUMBATES. 



Group 1. 

 PbjPbO,. 



Tetragonal. 

 Tetragonal. 

 Isometric. 

 Monoclinic. 

 Hexagonal ; rboinbo- 

 bedral. 



(?) 



(?) 



OXYGEN SALTS: CLA.SS,— ARSENITES AND ANTIMONITES. 



The arseuites aud aiitimonites, derivatives of As(OH)3 and Sb(()II):,, 

 or compounds of oxides witli oxides in which the more negative parts 

 are taken by aiseuious and antimonious oxides, include botli anhy- 

 drous aud hydrous salts, together with a few chloriferous compounds. 



a roup 1. 



Romeite. CaSb204. 



Trippkeite. Copper arsenate. 



Group 2. 



Tbrombolite. Cu:,Sb.O,;.HiO. 



Corouguite. Hydrated antimouito of lead. 



Partzite. Hydrated antimonite of lead, copper, aud silver. 



Group 3. 



Nadorite. PbClSbOj. 



Ecdemite. PbtiCljASiOy. 



Ochrolite. PbeChSb^O,. 



Tetragonal. 

 Tetragonal. 



(?) 



(?) 



(?) 



Orthorbombic. 

 Ortborbombic. 

 Orthorbombic. 



