( iii ) 
XXI. A f>ort Account of fome Swedifh Minerals 
See. fent from Mr Angeftein, Overfeer of theming 
of Sweden’* Atfzwe*, to Mr James Petiver, apo- 
thecary , and F- R. S. 
■I. T) Itumen foffile, coagulatum, in Ferrifodina Betzberg 
JL3 a pud Suecos. 
This is very light, black, and Alining, like Pitch, or 
Canal-Coal ; in tafte mfipid, brittle and not clammy. 
II. Minera Ferri Be'zbergae. 
A blackifh Mineral, full of finall glittering Tandy Par- 
ticles, which eafily break and crumble fmall like black 
Sand 5 its ponderous, and without any drofly Mixture. 
III. Minera Martis Betzberg^. 
The outfide lumps are fmooth and fhining, its infide 
of finer Particles than the laft, but when broke more 
fhining, large and fiikey. 
IV. Minera Martis Betzbergae? Carbonis facie. 
The ourfide fmooth and fomewhat Ihining like Pit- 
Coal , the infide more gray and glittering. 
V. Minera Martis ditiffima, fodin£ Danemorae Sued a. 
This refembles a Slat-Coal of a Lead colour, heavy, 
but neither fhming nor glittering, except a little Brafiey 
in the imerftices: which are bet few, and thofe irregu- 
lar: This had a fparry Vein thro’ it, about the thicknefs 
of a quarter of an Inch. 
VI. Rubinus globulofus, e Fodina Garpenberg Sued <e. 
Thefe are near as long as Hazel Nuts $ the outfide in 
many Places tranfparent,. but broken and rugged 5 they 
feem more ponderous than a clear Ruby ot the fame 
fize. 
Minera 
