MINERALS AND GEOLOGY OF CANADA. 179 
have been found in the Eastern Townships or the neighbourhood, a district in 
which the Earthy or Bog Manganese Ore is of not uncommon occurence (see 
Section D.) Pyrolusite is found also in the adjoining State of Vermont. Itis a 
yaluable ore. Sulphide of Antimony has not hitherto been recognised in Canada. 
It occurs principally in fibrous masses of a lead or steel-grey colour, often with a 
dark or iridescent tarnish. A thin splinter wil! melt in the flame of a candle 
without the aid of the blow-pipe. It has been found in Maine, New Hampshire, cc., 
in the United States. 
B. 3. Not yielding to the Nail. 
(Principal Minerals:—Colour reddish; garlie-like odour before the blowpipe: 
Arsenical Nickel. Colour reddish, with blue or variegated tarnish; Purple 
Copper Pyrites. Colour, bronze-yellow; magnetic: Magnetic Pyrites. Colour, 
brass-yellow, often with variegated tarnish; streak, blaekish-green: Copper 
Pyrites. Colour, dark-grey, often with green or blue tarnish; (Sp. gr. under 5.8) 
Oopper Glance. Colour lead-grey; breaking easily into rectangular fragments ; 
(Sp. gr. over 7.0): Galena. Colour, dark brown or various; streak brown; 
Tnfusible: Zine Blende. 
Arsenical Nickel :—Colour light copper-red, sometimes with green- 
ish-white coating ; exceedingly heavy ; yielding an arsenical or garlic- 
like odour before the blowpipe. Many (or most) specimens are just 
hard enough to scratch glass; hence, this substance is described in 
full under Section A 2, above. As a Canadian mineral, it is com- 
paratively unimportant. 
Magnetic Pyrites:—Colour brownish or bronze-yellow, with black 
streak. Chiefly in amorphous masses. Magnetic, and often exhibits 
polarity. H. 3.5-4.5; Sp. gr. 4.4-4.7.  Fusible, with sulphur 
fumes. Easily converted, by roasting, into red oxide of iron. One 
hundred parts contain: sulphur 39.5, iron 60.5. This substance, like 
the common pyrites, is not employed as an ore of iron. It occurs in 
considerable veins in St. Jerome, C. E.; also in the Chaudiére Valley, 
where it is in part auriferous; and, in large quantities, about Balsam 
Lake, &c., C. W. 
Copper Pyrites .—Brass-yellow, often with a variegated tarnish ; 
streak, dark green or greenish-black. Chiefly in amorphous masses ; 
sometimes in small tabular and tetrahedral crystals (Dimetric.) H. 
3.5-4:0; Sp. gr. 4.1-4.3. Fusible with sulphur fumes into a mag- 
netic globule. One hundred parts consist of: sulphur 35, copper 
34.5, iron 30.5. This mineral is one of the most important of the 
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