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2D
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Anthracite . .
Semi-anthracite
High carbon bityminous

Bituminous

Low carbon -.
Cannel

Sub-bituminous
Lignite .

Physical Properties.

Short blue lame
Short flame ; non-coking

Short flame ; non-coking
Luminous flame ; usually
cokes

Long flame: cokes

Long smoky flame : cokes

Streak brown or yellow
fracture conchoidal
Streak the same; frac.
ture earthy. Splits along
 bedding: fibrous
structure

Volatile Constituents.


35%
7-12 9%,
12-15 %
12-26 9,

Less than 35 9

30-40%
Moisture

Over 6 9,

Over 20 9,

Carbon.

93-95 %
90-93 %
80-90 9,
75-00 9%

70-80 9/.

60-75 9,

45-65

of

Ratio of Fixed Carbon to
Volatile Matter.

Over 12—1
12—%

A—y

[+2—Y

(Ratio of fixed carbon
+ % volatile matter
to hygroscopic mois:
ture 4+ 4 volatile
matter.)
2°5-3°3

[+8-2°8

B.T.U.

14,500-15,000
15,000-15,500
15,200-16,000
14,000-16,000

12,000-14,000
12,000-16.000

[0,000-1 3,000

7000-1 1.00"

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