Uraninite : Pitchblende
Uraninite is a uranium-rich mineral with a composition that is largely UO2, but which also contains UO3 and oxides of lead, thorium, and rare earths. The uraninite may occur as black octahedral crystals of high specific gravity (9.0 - 10.63); when in masses of pitch[?]-like lustre it is called pitchblende. All uraninites and pitchblende contain a minute amount of radium; it was in pitchblende from the Jáchymov[?] in Czechoslovakia that Marie Curie discovered radium.An important occurrence of pitchblende is at Great Bear Lake[?] in the Northwest Territories of Canada, where it is found in large quantities associated with silver.
See also: list of minerals
therefore, he erected a strong fortified camp.html">camp on the other side of the
off from the city and the camp of Gustavus all supplies from Franconia,
King, and flattered himself with the hope of slowly, but surely, wearing
wish to encounter in the field.
Little aware, however, of the resources and the strength of his
from himself the fate he was designing for others. From the whole of
and what little provision remained, must be obstinately contested with
it was possible to provision his army from without; and these forays
of which the surrounding country exhibited the most melancholy traces.
parties could not venture out without a numerous escort. And when this
Wallenstein had to support his troops from a distance. A large convoy.html">convoy
Gustavus Adolphus having received intelligence of its approach,
darkness of the night favoured the enterprise. The whole convoy, with
Imperial escort was cut to pieces; about 1,200 cattle carried off; and a
were set on fire. Seven regiments, which Wallenstein had sent forward
convoy, were attacked by the King, who had, in like manner, advanced to
being driven back into the Imperial camp, with the loss of 400 men. So
the part of the King, made the Duke of Friedland repent that he had
an attack impracticable; and the armed youth of Nuremberg served the
want of provisions, which began to be felt in the Imperial camp as
first compelled to give way.
Fifteen days had the two armies now remained in view of each other,
anything more than slight attacks and unimportant skirmishes. On both
.
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