ere are good indications of Asbestos where the serpentine is crossed
by quartzose, gneiss, or "traverse dykes," and some valuable finds have
been made at the junction with the dioretic rocks.

When the serpentine is found dark in colour, to have a granular
appearance, containing many dark grains of, perhaps, felspathic
crystals, the Asbestos will be of a dark, dull, translucent lustre, very
compact, and easily fluffed to a fine silken fibre. The admixtures of
hard and soft serpentine, where not effected by a fault, may sometimes
be regarded as a doubtful indication of an immediate find, but if its
hardness increases on descending, and colour becomes more uniform, from
a light emerald green with a whitish admixture, to a dark olive, and
containing numerous small veins of fibre, the conclusions may be
considered as favourable to rich deposits of Asbestos.

In conclusion I may add that the foregoing remarks, as regards the
indications of this valuable mineral, are based on my personal
geological experience, and the reliable information of the managers of
the various Asbestos mines in Canada, whose opinions have greatly aided
me in my recent prospection, and I trust that this pamphlet will not
alone be a benefit to them, but to the Asbestos industry, which I feel
assured will be one of the most prominent in the province of Quebec.

LUCIUS J. BOYD,
C.E., F.R.G.S.I.

End of the Project Gutenberg EBook of Geological Report on Asbestos and its
Indications, in the Province of Quebec, Canada, by Lucius J. Boyd

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