Political and commercial geology and the world's mineral resources
Science
Political and commercial geology and the world's mineral resources
Geology, Economic; Mines and mineral resources
=Australasia.=--Like other British possessions, _Australia_ labored
under the handicap of a comparatively low fixed price for tungsten
ores during the war. This price, at first 55 shillings per long ton
unit c.i.f. London, was later raised to 60 shillings. During the
earlier part of the war the price paid in Australia averaged less than
one-half the price paid in the United States, and only a little more
than half that paid in regions other than the British provinces. In
consequence the Australian tungsten production did not increase during
the war as it might have done had prices been higher. The cream of the
known deposits is gone except in Tasmania, where contact metamorphic
deposits on King Island have quadrupled the Tasmanian output. The
tungsten minerals mined in Australia are largely wolframite with
smaller quantities of huebnerite and scheelite. The huebnerite seems to
be rarely recognized as such in the British market, but is all sold as
wolframite. Except for the contact metamorphic deposits on King Island,
Tasmania, the deposits worked are mostly veins, with some pegmatites.
In New Zealand, the production is wholly scheelite; it increased
considerably during the war until the last year--1918--when, apparently
from a lack of efficient labor, it fell to the lowest point since 1909.
The probabilities are that there will be a stoppage of output for the
present.
=South America.=--In _Bolivia_ the increase of production has been
great. The deposits seem to be wholly veins and derived placers.
The veins are closely connected with the tin deposits, and in many
veins tin and tungsten are associated, but many tungsten deposits
contain little or no tin. The tungsten minerals mined are ferberite,
wolframite, scheelite and some huebnerite. In some veins the minerals
are mixed and in others wholly separate. The mines are in and on both
sides of the eastern Cordillera of the Andes through a distance of
nearly 400 miles from a point near Puerta Acosta, on the northwest, to
Chorolque, on the southeast. Mining costs during the war rose greatly
in sympathy with the rise in other parts of the world. Wages did not
rise to great heights, but the cost of materials advanced decidedly.
Transportation conditions are always bad in most of Bolivia, and
heavily increase expenses. Because of circumstances the output is
extremely sensitive to a decrease in demand or prices, and hence it
fell quickly after the armistice, but should high prices come again, it
will probably again increase quickly. Some modern plants were placed at
mines before or just as the armistice was signed, and when world stocks
of tungsten are used and when there is again a demand, some ore will be
produced even at less than $10 a unit, though the average cost seems to
be about $12 a unit, at the mine.[85]
[85] HAZELTINE, ROSS, United States consul, La Paz. Report dated May
14, 1919.
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