OF FOSSILS. 



j CXLVII. Mincralifcd Mctalt. 



A MINERALISED metal appears to me to be 

 metal intimately united with fomc foreign fab- 

 ftance that deftroys more or lefs the genuine 

 metallic form. 



J CXLVIII. Mincralifing Suljlancef 

 SUCH are fulpher and acids. 



CXLIX. Metals mincralifcd by Su/pbur. 



SULPHUR can be direclly united with all the 

 metals, except gold, platinum, and zinc; and 

 thcfe mineralifations arc found in the bowels of 

 the earth. Sulphurated tin alfo occurs in Si- 

 beria *. 



Some mineralizations arc ailcftcd, both a* to 

 chnntdcr and appcanmcc, nccording to tho 

 quantity of fulphur. Tin, combined with twen- 

 ty hundred parts of fulphur, forms a minerali- 

 fation, white and fibrous; but, with twice that 

 proportion, the compound is micaceous, and of 

 the colour of gold. 



Sulphur ading on perfect metals feparates a 

 portion of their phlogifton ; and is even capable 

 of uniting with many calces like wife. 



84 The 



* Eflayt| vol. tii. p. 158. 



