316 Farther Observations on Levyne. 



Art. XXVI. — Farther Observations on Levyne, a New Mi- 

 neral Species. By the Editor. 



1VL Brogniart has lately published, in the Annates des 

 Sciences Naturelles, an extract of a letter from M. Berzelius, 

 dated Stockholm, March 15th 1825, which contains the fol- 

 lowing passage: " The Levyne sent me by Dr Brewster is ab- 

 solutely nothing more than chabasie, in which a portion of the 

 lime is replaced by soda." 11 As this passage, from which the 

 general reader would infer that Levyne was not a new mineral 

 species, has appeared in most of the Foreign Journals, it is 

 necessary to correct the mistake upon which it is founded. 



In June 1824, after I had determined Levyne to be a new 

 mineral, and given it that name in compliment to Mr Levy,* 

 I sent a specimen of it, along with various others minerals, to 

 M. Berzelius. In the list which I retained of these minerals, 

 I have marked this specimen Levyne and accompanying cha- 

 basie. Mr Haidinger, who happened to be in Stockholm in 

 August last, wrote me that Berzelius had, by some mistake, 

 applied the name of Levyne to chabasie, Avhich, as he remark- 

 ed, would produce great confusion. This mistake surprised 

 me very much ; but the origin of it became apparent from the 

 following passage of a letter which I received from M. Ber- 

 zelius himself, of the date of 13th September 1825. 



" Among the minerals which you sent me, I found, among 

 others, Brewsterite and Levyne. The first of these has al- 

 ready been analyzed by M. Retzius, who had distinguished 

 it as a particular species, under the name of prehnitiform 

 stilbite, and who had found it composed according to the fol- 

 lowing formula : 



With respect to Levyne, I have myself analyzed it, and I have 

 found it to be composed according to the formula of chabasie, 

 with this single difference, that it contains, at the same time, 

 lime, soda, and potash. But Mr Haidinger, who has seen 



" See this Journal, vol. ii. p. 332, where I have stated, that I sent a spe- 

 cimen, containing a few minute crystals, to M. Berzelius. 



