82 A SYSTEM OF 



B. Of concentrated fibres, Bafaltts fibris 

 concent ratis ; The fb.rred cockle, or fhirl, 

 from its fibres being: laid fucllarvvife. 



a. Blackilh green, from Salberg, in 

 "vVcftmanland, where, being found to- 

 gether v/ith a fteel grained lead ore, the 

 whole is called, gran-ris-malm, or pine- 

 ore, from its refemblance to the bran- 

 ches of that tree. This kind of cockle 

 is alfo found at Uto, in Malaren. 



b. Light green, from Kerrbo, at Skin- 

 fkatteberg, in Weftmanland. 



c. White, at Lillkyrkie in Nerike, Wef- 

 •terfilfverberget in Weftmanland, and 



Pargas in Finland. 



SECT. LXXV. 



4. Cryflallifed cockle, or iliirl, Be. felt es cry- 

 Jiallifatus. 



a. Black, from France, Yxfio at Nya 

 Kopparberg, in the province of Weft- 

 manland, Umea in Lapland, Ofterbottn 

 in Sweden. 



* To this fpecles of cockle, or fhirl, belong moR of thofe 

 fubftances called impirfetl ajbejii ; and as the cockle per- 

 fectly refembles a flag from an iron furnace, both in regard 

 to its metallic contents, and its glaffy texture, it is no won- 

 der that it is not foft enough to be taken for an afbeilus. It 

 has however, only for the fake of its flruclure, been ranked 

 among the afbelti ; and it is furprifing, that the fibrous gyp- 

 futii, from And rarum, in the province of Skone, has efcaped 

 being on the fame account confounded with them. The 

 itriated cockle, or fhirl, compared to the afbefli, is of a Aim- 

 ing and angular furface (though this fomeiimes requires the 

 aid of the magnify ing-glafs to be difcovered) always fome- 

 \yhat tranfparent, and is pretty eafily brought to a glafs with 

 the blow-pipe, without being confumed, as the pure aft>c:fu 

 feem to be. (See Afbefti, Sect, cii.) 



b % Deep 



