52 MINERALS AND GEOLOGY 



( Sp gr. over 9, reddish tin white Native Bismuth, (No. 8.) 



( Sp gr. under 7, light lead-grey, often iridescent Bismuth 



Glance (No. 24.) 



, . \ Breaking into rectangular fragments GALENA (Mo. 12.) 



33 bis | g^ yielding antimonial fumes. . . .Menighinite and Plumbigerous 



Antimony Ore, (Nos. 25 and 25 bis.) 



( Lustre distinctly metallic ; streak greyish-black ; mostly fibrous or 



, ) acicular Manganite (No. 35.) 



) Lustre sub-metallic ; streak, mostly pale brown ; BB, sulphur-reaction, 

 ( p . 44 ZINC HLBN DE (No. 13.) 



r Soluble or partially soluble in water. Taste bitter or metallic. Occur- 

 ring chiefly as an efflorescence or incrustation 36 



35 -> ( Occurring in earthfy masses or crusts (which soil or mark 



| Insoluble < more or less) 39 



( Occurring under other conditions 48 



BB, with borax, a coloured glass or bead 37 



BB, with borax, a white or colourless beard 38 



( Solution giving a deep blue precipitate with red or yellow "prussiate of 



37 ! potash."* Green Vitriol (Sulphate of Iron) (No. 10^.) 



( Solution giving a greenish- white precipitate with " yellow prussiate." 



Sulphate of Nickel (No. 10J<) y 



( BB, with nitrate of cobalt, a blue mass after ignition (see p. 34.) -, 



38 I Alum (No. 10&) 



( BB, with nitrate of cobalt, a pale-red mass Epsomite (No. |J[.) - 



oq ( Colour, yellow or yellowish-brown 40 



j Colour, red, black, brownish-black, blue, or green 43 



, (} \ BB, taking fire and burning with blue flame Sulphur (No. 2.) 



w ( BB, not inflammable 41 



. , j BB, becoming black and magnetic 42 



\ BB, not rendered magnetic Uran Oehre (No. 37 .) 



4 2 j Occurring in thin crusts on bituminous shale Humboldtine (No. 108.) 



| Occurring under other conditions YELLOW OCHRE (No. 34.) 



Colour, red. BB, becoming magnetic .. RED OCHRE and SCALY RED 



IRON ORE (No. 29.) 

 C. black, dark-brown, blue, or green 44 



I* j C. black or dark-brown 45 



: ' C. blue or green , 46 



BB, inflammable Asphalt (No. 110.) 



45 ^ BB, not inflammable. Forming with carb-soda a "turquoise enamel," 



p. 39 EARTHY MANGANESE ORE (No. 36. ) 



46 t Colour, blue 47 



\ Colour, green. Effervescing in acids Malachite (Green Carbonate 



of Copper) (No. 95.) 



* As the iron is always partly peroxidized, a blue precipitate is produced by either of these 

 reag-ents. 



