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Ch. 2: Coal of India

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90                                   COAL.
south-east of the Kamaram field. Its area is nineteen square miles, the coal measures being found throughout about eight square miles. The groups represented are Kamthis, Barakars, and Talchirs. One coal seam was discovered, but, being much concealed, its thickness was not ascertained : an assay of a sample from it gave:
Additional seams, one of them 21 feet thick, have since been proved by boring.
This field may possibly become of some economic importance, as there is a prospect of there being a railway constructed at no great distance from it.
SIKKIM. XXXI. Darjiling District.*
This field occupies a narrrow zone, which stretches along the foot of the Himalayas from Pankabari to Dalingkote. The rocks are probably Barakars, which have been much crushed and tilted, dipping at angles of from 40° to 900 to N.N.E., or towards the main mass of the hills. Frequently the sandstones have been converted into quartzites, and the shales into splintery slates. Much of the coal is in the condition of powder, and some of it has assumed the character of graphite. The effect of the compression has been to reduce it by removal of the volatile portions to the condition of an anthracite. Some experiments were made with a
* Mallet, " Memoirs Geological Survey of India," vol. xi. " Manual,'' vol. i.
Ch. 2: Coal of India Page of 143 Ch. 2: Coal of India
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