1870.] Mineralogy. 551 



Passing to another of our colonies, we find materials for niine- 

 ra logical work afforded by the many meteorites which from time to 

 time have fallen in India. One of these has lately been analyzed 

 by Mr Waldie.* In February, 1867, a shower of about forty 

 stones fell near Khettree in Kajpootana. Alarmed at the shower, 

 and attributing it to the vengeance of an offended deity, the natives 

 at once collected the stones, reduced them to a fine powder, and 

 scattered it to the breeze. Diligent search, however, led to the 

 discovery of a piece which luckily had escaped destruction, and it is 

 this fragment which formed the subject of Mr. Waldie's analysis. 

 The stone is of a light bluish-grey colour, darker in parts, and 

 contains disseminated metallic particles and granules of a greenish- 

 yellow colour. Its general composition was found to be as fol- 

 lows : — 



Nickel iron 18*55 



Troilite and schreibersite 5*22 



Earthy matter soluble in acids 35 • 18 



Ditto insoluble 42*36 



101-31 



For eighty years a specimen has lain in the Wiirzburg collec- 

 tion, under the name of an arsenical ore. Prof. Sandberger's recent 

 examination shows, however, that it is really a new species, which 

 he terms Isoclase.^ The mineral — which is said to have come from 

 the mines of Joachimsthal, in Bohemia — crystallizes in the oblique 

 system, and consists of a hydrous phosphate of lime having the 

 following formula, and therefore analogous to the species Libe- 

 thenite and Tagilite, among the copper phosphates: 4CaO.P0 5 

 + 5 HO. 



Another new phosphate of lime is described by the same author 

 under the name of Collophane. This is an amorphous substance 

 found in cavities in the altered coralline rock of Sombrero, and has 

 the following composition : 3 CaO . P0 5 -f- HO. 



The energetic French chemist, M. Pisani, has published an 

 analysis of the new Algerian mineral described by M. Flajolot as 

 Nadorite — a name which has reference to the Djebel Nador, in the 

 province of Constantine, where the mineral in question was found. 

 While Flajolot regarded it as a compound of the oxides of lead and 

 antimony, Pisani finds that it contains chlorine — a point of great 

 interest, since this is the first mineral in which chlorine has been 

 detected in a compound containing antimony. In fact, Nadorite is 

 an antimonial Mendipite, or oxychloride of lead, and may be thus 

 formulated :J (Sb 2 3 .PbO) + PbCl. 



Bahdionite is Yon Kobell's name for a new mineral from the 



* ' Chemical News,' xxi., No. 551, p. 278. 



t Leonhard and Bronn's ' Jahrbuch fur Mineralogie,' 1870, Heft III., p. 306. 



% 'Comptes Kendus,' Aug. 1, 1870, p. 319. 



