The use of the blowpipe in chemical analysis, and in the examination of minerals / by J.J. Berzelius ; translated from the French of M. Fresnel, by J. G. Children. With a sketch of Berzelius' system of mineralogy; a synoptic table of the principal characters of the pure earths and metallic oxides before the blowpipe, and numerous notes and additions by the translator.

  • Berzelius, Jöns Jakob, friherre, 1779-1848.
Date:
1822
Catalogue details

Licence: Public Domain Mark

Credit: The use of the blowpipe in chemical analysis, and in the examination of minerals / by J.J. Berzelius ; translated from the French of M. Fresnel, by J. G. Children. With a sketch of Berzelius' system of mineralogy; a synoptic table of the principal characters of the pure earths and metallic oxides before the blowpipe, and numerous notes and additions by the translator. Source: Wellcome Collection.

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    Remark Amongst the crystalline minerals that accompany meionite and nepheline, Werner has distinguished one by the name of Eisspat. This fossil behaves in every respect like felspar, and if, as Peschier has asserted, it contain soda, it follows that it is identical with the albite, or kiesel- spath, of Hausman. 8. Elœolite, Fettstein, from Fredrichsvarn, in Norway.1 Alone, in the matrass, gives off a little water, without any change in aspect or transparence. On charcoal fuses pretty readily, with slight intumescence, into a blebby, colourless glass. With borax dissolves easily, except a certain semi-transparent portion, which, as with mesotype, does not fuse at first with the rest, but requires a long continued blast. With salt of phosphorus decomposes with the utmost difficulty, and leaves a siliceous skeleton. The glass becomes opaline on cooling. With soda, vitrification extremely laborious. The glass is very difficult to fuse and obtain clear. With solution of cobalt the fused edges are co- loured blue. 9. Andalusite, from Fahlun. Felspath apyre. Alone becomes covered with white spots (the 1 Klaproth’s analysis gives the very improbable composition of 1 atom of trisilicate of potassa + 4 atoms of silicate of alu- mina. Vauquelin found both soda and potassa in it. In point of composition, this mineral appears to be a scapolite, in which the lime is replaced by alcaline bases. B.