liquids.
It has a bitter taste and dissolves quickly in water. It occurs in beds
associated with Halite, Sylvite and other salts in Stass-furt, Germany,
in Persia and Galicia. Is used as a fertilizer and as a source of
potash salts.
Carnelian: A
translucent variety of Chalcedony of a rich orange-red color. The
Carnelian is the stone best adapted to seals and intaglii and has long
been used in this way by
gem engravers of all ages and countries.
Carnotite: Potassium
Uranyl Vanadate. This mineral has been found only in tiny crystalline
grains, so that its physical properties are not well known. It occurs
as a cry-talline powder, canary-yellow in color, in sandstones and
conglomerates and on pieces of silicified wood embedded in the
sandstones. It is limited to very shallow depths and is apparently a
deposit from ground water. This mineral is very valuable, not only for
the large percentages of Uranium and Vanadium it contains, but also for
the Radium. In fact the principle value of Carnotite depends upon its
content of Radium, which in the form of chloride is valued at about
$1,500,000 per ounce Radium is an intensely radioactive element
discovered by Madame Curie. (See Radium)
The
compounds of Camotite are used in chemical determinations, as
medicine, in photography, and as a dye for calico printing. It is mined
chiefly in Colorado.
Caasiterite Metallic
Dioxide, containing 79% Tin. This mineral is very hard and heavy and
represents an ore that has furnished tin from prehistoric times. Color
is brown or black; sometimes red, gray or white. It occurs in crystals
and massive, as fibrous aggregates, and as rolled pebbles in the beds
of streams, in three varieties, known as< tin-stone, wood-tin and
stream-tin. The tin is extracted from the concentrated ore by the
simple process of reduction. Alternate layers of charcoal and the ore
are heated together i na furnace, and the metal results. The metal tin,
is used principally for coating other metals. Copper for culinary
purposes is often covered with this metal. Several of its compounds
find use in the arts, and it is also used in different alloys such as
solder, bronze, and bell metal and type metal. It is found principally
in Bolivia, Bohemia, Saxony, England, New South Wales, Mexico; in the
United States, in Texas, North Carolina, South Dakota, and at various
points in Alaska.
Cat's Eye: A
variety of Chrysoberyl. The green hair-like mineral inclusions when
cut into a stone, give the effect of a cat's eye. These have been used
as gem stones since the
earliest times, and were highly prized by the ancients.
