A N T I M O N Y : ITS HISTORY, CHEMISTRY, MINERALOGY ...

THE GEOLOGICAL OCCURRENCE OK ANTIMONY ORES. 49
Mountains have been followed for a distance of 3 km. (2 miles),
cutting crystalline schists. According to A. Schmidt, the veins are
especially rich when the country is a chloritic or graphitic schist.
The principal vein-fillings are quartz, calc-spar, stibnite, stibiconite,
and pyrite. The country, that is, the graphitic schists, is sometimes
so impregnated with stibnite, that it may be profitably
worked for a distance of 3 to 4 metres away from the walls of the
veins. (A and C.)
Between Arany Idka and Rosenau, in Upper Hungary, stibnite veins
are found, containing quartz and carbonates, together with small
amounts of jamesonite, berthierite, blende, and auriferous pyrite. (A.)
At Felsobanya, along the boundary of an amphibole trachyte and
of a recent one, there is found a conglomerate which contains quartz
with pyrite, often realgar and stibnite, with galena, blende, etc. This
is classified by De Launay under Tertiary antimony, that is, its origin
is sedimentary. (E.)
Antimony ores are also found at Kremnitz, Toplitzka, Schemnitz,
Felsbbanya, Nagybanya, Dobschau, Gisno, Gross-Gollnitz.
BOHEMIA.
A typical example of antimonial gold-quartz veins, as described
by Posepny, is found at Krasnahora (or Schonberg) and Milesov (or
Milleschau) in Central Bohemia. Most of the veins are accompanied
by dykes—mostly lamprophyre dykes, but some are of porphyry
—cutting through an intrusive stock of granite intercalated between
schists. The stibnite often constitutes the larger part of the filling,
with a gold content of 100-133 g. ($66-$87*88) per ton. (B.)
Antimony ore is also found at Hata, Brodkowic, Pribram, and
Michaelsberg.
SERVIA.*
The Antimony Deposits of Kostainih.—The main mass of the rocks
in this locality consists of light-gray to ash-gray limestones, probably
of Triassic age, upon which gray and blackish soft clay slates, and in
part also clastic graywacke slates, rest. These limestones and slates
are cut through at many localities by biotite trachytes, and less often
by hornblende andesites of trachytic habit. These eruptive rocks
appear as dykes, sheets, and stocks within the strata, and also
* From "Lehre von den Erzlagerstattea," von Beck: Berlin, Gebruder Borntraeger,
1903; translated by Weed, "The Nature of Ore Deposits," N. F. Eng.
and Min. Journ.y 1905.
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