ANALYSES OF METEORIC STONES. 55 



•spot, the meteorolite of Stannern di&rs from others only proportion of 

 in containing a smaller quantity of metallic substances. metal, 



Mr. Khiproth, from its chemical analysis, suspects a^"'^'^^^"^* 

 similitude between this stone and basaltes, but it is very salics, 

 certain, that the two substances differ elTentially in their 

 fracture, hardness, and appearance when scraped. 



The meteorolite that fell near Eggenfield in Bavaria, in Stone of Eg- 

 December, 1803, is that which in its external <^haracters f^^" ^^5^^™°/^*^ 

 conies nearest to the basaltic tufa in the neighbourhood of 

 Klosterlaach. Mr. Chladni possesses a specimen of it, which 

 is very remarkable from containing olivine, or the granular yj„g 

 peridot of Haiiy, disseminated in it. 



Mr. Moser, a chemist of Vienna, found in 100 parts of Component 

 ' ^ parts ot the 



this aerolite the following substances. stone of Stan- 



nern according 



Silex 46-25 »« Moser. 



Alumine 7'62 



Black oxide of iron '■2T 



Oxide of manganese. 0-75 



Lime 12-12 



Magnesia. 2*50 



A trace of chrome, and of muriates 

 Sulphur, water, and loss 3*76 



100 



These results, so different from what have hitherto been Analysis of it, 

 found in productions of this kind, having led some persons 

 to suspect, that there may have been errours in this analysis ; 

 and conceiving at any rate, that it deserved a repetition ; 

 requested me to undertake it, which accordingly I did. 



Treated by muriatic acid, this stone gave out a very small Treated with 

 quantity of sulphuretted hidrogen. "'""^**'= ^""^ 



If it be subjected to a strong red heat, its colour changes Heated, 

 to a pale red, but its weight is not diminished ; no doubt 

 because the oxidation of the iron makes up the loss of 

 weight. 



Treated with caustic potash we obtain a fused substance. Treated with 

 which has a green hue. This colour is more distinct on di- *^*"stic poti»»», 

 luting the substance with water, which produces a deep 

 green solution. After the solution is filtered, on being ex- 

 posed 



