I 
MINERALOGY. 
Cagnqef in Dalarne: It is found 
at that place almoft to the day, an^ 
is of as great ftrength as any natu- 
ral loadftones ever cpmmon.-; 
ly found. 
I, Fine-grained, from Saxony, 
€. Coarfe-grained, from Spetalsgruf? 
van, at Norberg, and Kierrgruf- 
van, both in the province of Weft- 
manland. This lofes very foon its 
magnetical virtue. 
With coarfe fcales, found at 
Sandfwoer in Norway. This is a 
pyritieal Eifenman^ and yields a red 
powder when rubbed, §eft. edii. 
SECT, eCXIL 
a. Refraflory iron ore, Minera ferri re* 
tra^oria. This in its crude ftate is 
attraded by the loadftone. 
Giving a black powder when rub- 
bed, T ritura atra. Of this kind 
are, 
1. Steel-grained, from AdelforSj^ 
in the province of Smoland. 
2. Fine-grained, from Dannemo- 
ra, in the province of Upland. 
3. eparfe-grained, from Kierrgruf- 
yan, in the province pf "VVeft- 
manland. 
This kind is found in great 
quantities in all the Swedifli irop 
mines *, and of this moft part of 
the fufible ores confifr, becaufe 
it is commonly found in fuch 
|cinds of rocks as are very fufible : 
