Minerals of Europe and America. 305 
‘The metallic substance to which he also alludes, as imbed- 
ed in Brucite, and accompanying the spinelle at WwW arwick, 
may be mistaken by a transient observer, for the fer oligiste of 
Havy, but it is not even magnetic, and differs essentially from 
it in other respects. It is the same mineral which Doctor 
Fowler alludes to in his account of the Warwick minerals, 
and which he supposes to be chromat of iron ; but I early de- 
termined that it did not contain a particle of chrome, and I 
find that Doctor Torrey has since ascertained that it is a spe- 
cies of titaniferous iron, precisely similar to a mineral of the 
same character, which is frequently found in the North of 
Europe. As tothe specimen to which Mons. Von Struve alludes 
under the name of Nuttalite, I have only to observe that it 
is the same mineral which I discovered with others, a few 
years ago at Bolton, Massachusetts, and of which I gave an 
account in this Journal, describing it as elaolite, or a variety 
of scapolite. I found however, that since that, a specimen 
of it was presented to Mr. Brooke of London, by Mr. Nut- 
tall, who finding it to differ in some of its crystaline charac- 
ters from other minerals, gave it the name of Nuttallite. 
In taking a cursory view of the principgl minerals of 
North of Europe, there are none which are of more impor- 
tance than the ores of iron, for which Norway and Sweden 
are so remarkable ; but I will venture to say, that every va- 
riety of this mineral which has been found there, has been 
found in the same class of rocks in America, in the greatest 
abundance and of equally good quality. The whole of those 
may be included under that species called magnetic oxyd of | 
iron, or fer oxydule of Haiiy, either crystalized, steel grain- 
ed as in Sweden, orcompact. Though not exclusively con- 
fined = the primitive formation, yet it is found generally to 
exist in the mountainous districts of New-Jersey, Ne Vt 
and Vermont, in granite, gneiss, mica slate, and hornblende 
rocks. Itis from this species of ore that the best bar iron of 
Sweden is manufactured, and if the iron of this country is 
not of equally good quality, it evidently arises from a deficien- 
ey of skill in the true principles of manufacturing it from such 
ores, as no country in Europe contains those of a better quali- 
or favorably situated in every respect 
"Titanium i is one of those metals which has been found more 
particularly in the North of Europe. It is said to occur fre- 
uently in those primitive aggregates which contain beds of 
tic iron ore at Arendal in Norway, associated with 
VOL, XII.—NO, 2. 39 
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