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
Chromite ore bodies were exploited in Madras as early as 1861 and small
amounts of ore were mined intermittently. The ores are associated
with magnesite veins in serpentine. Since 1907 a steady production is
recorded from Madras, which has increased recently. Important deposits
of chromite are found in Mysore. These deposits have produced more than
2,000 tons of ore annually in recent years, which is reported to have
been sent to the United States. The chromite deposits of Bengal are
said to be small and unimportant. In Bombay a large body of low-grade
chromite is said to measure 1,000 by 300 feet and to average 34 per
cent. chromic oxide.
Before 1910 chromite mining in _Japan_ was sporadic and unimportant,
but since 1910 the output has been steady and increasing. The principal
occurrences of chrome ore are in the southwestern part, the mines
of Wakamatsu, in Hoki, being the most important. The ore is said to
average about 40 per cent. chromic oxide. Chromite is also reported to
occur in the northern part of Japan. The Japanese chromite deposits are
small and soon exhausted.
The principal chromite deposits of _Russia_ are in the southern part of
the Ural Mountains and are associated with serpentine and soapstone.
The deposits are classed under three heads: Large granular masses in
serpentine, finely disseminated chromite in serpentine, and chromite
sand in platinum- and gold-bearing placers. The characteristic
occurrence of chromite bodies in the Urals is as segregations within
areas of dunite largely altered to serpentine. Platinum in scattered
grains is associated with chromite in the dunite in several places.
Recently chromite deposits have been reported in the northern part of
the Caucasus Mountains.
=Europe.=--The chromite deposits of the _Balkan Peninsula_ may be
grouped into four main districts: central Serbia; southern Serbia;
Saloniki, in eastern Macedonia; and Magnesia, southern Thessaly, and
the neighboring islands. The chromite deposits are found in serpentine
derived from the alteration of peridotite.
The chromite mines of _Serbia_ and _Macedonia_ for many years furnished
a small production, credited to European Turkey, which before the
last Balkan War embraced all the chromite-bearing areas. Many of the
deposits of central Serbia are poorly situated with reference to
transportation, the ore being hauled on carts to the railroad stations
and thence by rail to the coast. In eastern Macedonia some of the
mines are relatively near the coast and the ore is carried on carts
to Saloniki. The mines of Serbia and Macedonia were worked in part by
individuals and in part by the same firms which mined the chrome ores
of Asia Minor, such as Patterson & Co., Whittal & Co., and others.
Public-domain text, read in full here on John Shaqi.
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