STRONTIANITE.

Since it has been shown by Professor Scheibler, of Berlin, that

strontium is the most powerful medium of extraction in sugar refining,

owing to its capacity of combining with three parts of saccharate, the

idea suggests itself that the same medium might be successfully

employed in the arts, and form a most interesting subject of

experiment for the chemist.

Hitherto native strontianite, that is, the 90 to 95 per cent. pure

carbonate of strontium (not the celestine which frequently is mistaken

by the term strontianite), has not been worked systematically in

mines, but what used to be brought to the market was an inferior stone

collected in various parts of Germany, chiefly in Westphalia, where it

is found on the surface of the fields. Little also has been collected

in this manner, and necessarily the quality was subject to the

greatest fluctuations.

By Dr. Scheibler's important discovery, a new era has begun in the

matter of strontianite. Deposits of considerable importance have been

opened in the Westphalian districts at a very great depth, and the

supply of several 10,000 tons per annum seems to be secured, whereas

only a short time ago it was not thought possible that more than a few

hundred tons could in all be provided.--_Chemist and Druggist._

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Scientific American Supplement, No. 315, January 14, 1882 · 第 84 / 122 题