A SYSTEM OF 
B, Of concentrated fibres, Bafaltes fihns 
conceniratls \ The ftarred cockle, or Ihirl, 
from its fibres being laid ilellarwife. 
a, Blackifh green, from Salberg, in 
Weftmanland, vdiere, being found to- 
gether with 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. 
h. Light green, from Kerrbo, at Skin- 
fkafteberg^ in Weftmanland. 
€. White, at Lillkyrkie in Nerike, Wef- 
terfilfverberget in Weftmanland, and 
Pargas in Finland. 
SECT. LXXV. 
■ 4. Cryftallifed cockle, or fliirl, Bafaltes cry- 
Jiallifatus, 
a. Black, ‘ from France, Yxfio at Nya 
Kopparberg, in the province of Weft- 
manland, Umea in Lapland, Ofterbottn 
in Sweden. 
* To this fpecies of cockle, or fhirl, belong mod of thofe 
fubdances called imperfeSl ajbejii ; and as the Cockle per- 
fectly refembles a flag from an iron furnace, both in regard 
to its metallic contents, and its glafly texture, it is no won- 
der that it is not foft enough to be taken for an afbeftus. It 
has however, only for the fake of its ftrufture, been ranked 
among the afbefli ; and it is furprifing, that the fibrous gyp- 
fum, from Andrarum, in the province of Skone, has efcaped 
being on the fame account confounded with them. The 
ftriated cockle, or fhirl, compared to the afbelli, is of a fliin- 
ing and angular furface (though this fomeiimes requires the 
aid of the magnifying-glafs to be difcovered) always fome- 
what tranfparent, and is pretty eafily brought to a glafs with 
the blow- pipe, without being confumed, as the pure afbefti 
feera to be. (See Afbefli, Sedl, cii.) 
Deep 
