OF CENTRAL CANADA PART II. 53 



( Effervescing in acids ; BB, reactions of Copper (p. 37.) . . Blue Carbonate 



47 ; of Copper (No. 9& ) 

 ( BB, rendered magnetic Vivianite (Phosphate of Iron) (No. 104,) 



48 j Hardness sufficient to scratch window-glass distinctly 49 



5 Hardness insufficient to scratch glass distinctly 69 



,q \ Fusible or partially fusible, per se* 50 



I Infusible, per se 61 



~n i Sp. gr. = 3.0 or less. (Colour, mostly pale. ) 51 



)U j Sp. gr. over 3.0 56 



r, ( Yielding water by ignition in bulb-tube (see p. 34) 52 



} l Not yielding water, or yielding traces only, on ignition 53 



( Fusible on thin edges, only. C. dark-green Chloritoid (No. 81.) 



52 \ Easily fusible. C. light-green, greenish- white . . . .PREHNITE (No. 67.) 

 /Easily fusible. C. peach-blossom red . . . . Wilsonite : var. of Scapolite 



(No. 63.) 



_ ( Easily fusible SCAPOLITE OR WERNERITE (No. 63.) 



( Fusible on edges only, unless in thin splinters 54 



( White, red, &c. In masses with smooth rectangular cleavage 



54] ORTHOCLASE (No. 57.) 

 ( Cleavage not rectangular. Cleavage planes faintly striated 55 



( White, reddish, &c. BB, imparting a yellow colour to the flame 



55] ALBITE(No. 58.) 



( Grey, often with coloured reflections LABRADORITE (No. 60.) 



In rhombic dodecahedrons or trapezohedrous (p. 14), or in imbedded 



granular masses mostly of a red colour GARNET (No. 47.) 



In fibrous masses or prismatic crystals 57 



!In black, brown, or green triangular prisms (often broken and disjointed 

 or in fibres with triangular cross fracture TOURMALINE (No. 46. ) 

 In other forms 58 



( In tetragonal (square prismatic) crystals (p. 15). Sp. gr. 3.5 or more. . 



58 j Idocrase (No. 48.) 

 ( In other forms 59 



i Fusible into a globule or rounded mass AMPHIBOLE (No. 52.) 



59 ] PYROXENE (No. 53. ) 

 ( Fusible on the surface, only, into a dull slag or scoria 60 



( In flat wedge-like crystals, mostly dark-brown or yellowish 



60 j SPHENE(NO. 51.) 

 ( In green fibrous masses and long prismatic crystals EPIDOTE (No. 49.) 



g j ( Streak-powder, white, or greyish in dark specimens 62 



( Streak-powder, black, brown, greenish or red 66 



* In testing this character, only a thin, pointed splinter of the mineral must be taken ; other- 

 wise the substance, although really fusible or fusible on the edges, may be regarded by begin- 

 ners as infusible. 



