VICTORIAN METEORITES, WITH NOTES ON OBSIDIANITES. 
Non-Metallic Portion. — On treatment with hydrochloric acid, 
the powder gave of? a copious evolution of sulphuretted hydrogen. 
Decomposed by acids, with separation of gelatinous silica, 96 ‘4 per 
cent, of the material was found to be soluble in hydrochloric acid. 
On treating some of the fine powder with distilled water, and 
filtering, the clear solution gave a reaction for chlorine, iron, lime, 
and magnesia. Under a 1-inch objective small grains of a yellowish 
mineral, inclined to green, and resembling olivine were observed ; 
also grains of a mineral clear- white in colour, enclosing material 
of a reddish tinge. Several pieces of mineral of a dark colour, and 
somewhat resembling troilite were noticeable. 
Chemical Composition — 
Moisture at 100 C 
•840 
Water over 100 C 
5-350 
Silica . . 
29-350 
Alumina 
2-208 
Iron sulphide 
5-816 
Iron 
17-170 
Copper oxide 
•012 
Chromium sesquioxide 
Trace 
Manganese monoxide 
Trace 
Nickel protoxide 
•960 
Cobalt protoxide 
Minute trace 
Lime . . 
Trace 
Magnesia 
32-806 
Potash 
•277 
Soda 
Trace 
Phosphoric acid 
•095 
Carbon dioxide . . 
•080 
Chlorine* 
•227 
Oxygen 
4-901 
100-092 
Specific gravity (mean of three 
determinations) 
. , 
3-466 
Mingaye says, “ From the above analysis it will be seen that the 
non-metalhc portion is essentially a silicate of magnesia and iron, 
with iron sulphide. Some of the olivine has undergone alteration 
and is changed into hydrous magnesium silicate, as shown by the 
material containing 6 '19 per cent, of water.” 
* Less oxygen equivalent to chlorine, 0-047. 
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