274 METALS. 85. Ferrum. 



is hard, but not brittle: fpecific gravity from 5,01 r^ to 

 5,218: contains iron 66,1. oxvgene 21,2. water and carbo- 

 nic acid 10,7, lime 2,0. Mupst, 



rubricosum* Not magnetic, red, lamellar, fhlning internally, very 

 foft, greafy to the touch and ftaining the fingers, of a 

 common form. 



Ferrum rubricans. Syst. «^/. xii. 3./> 141. «, 33. 



Ferrum ochraceum. Wall. Jy it. 2, p, 248. n. 13. 



Red fcaly iron ore. K'lr^wan mineral. 2 p. 172. 



Red iron glimmer. Schme'/ter mineral. 2. p. 92. 



Red fcaly iron ore. Thomfon ckem. 4, p, 56. 



Found in Wales,, S^ivedent Saxony, Hungary, Sic. moll com- 

 monly incumbent upon other ores and minerals; colour 

 cherry red, often palnng into fleel grey or brown : texture 

 foliated, with the fcales generally incurved with diflinfl fine 

 grained concretions : it is foft, friable, feeling unftuous to 

 the touch and ftrongly ftainiiig the fiogers : when heated it 

 reddens, but before the blowpipe blackens and gives an olive 

 green tinge to borax. 



Htematites. Not magnetic, fibrous, hardifli, opake, with a red or 

 yellow ftreak. 



1. Black, combined v/ith isanganefe. 



Ferrum minera nigric. Wall. Jyft^i-p. 245. k, 10. 

 Black iron ftone. Kir^jcan mineral, z. p. 167. 

 Black iron ftone. Schmetjer miner. 2. />• 98. 

 Black iron ore. Thorn/on chem, ^ p. 58. 



2. Brown with a yellow ifh-grey ftreak. 

 Hematites nigrcfcens, Cronft, mineral. 202. , 

 Brown Hematites. Kir^-wan mineral z, p. 163* 

 Brown fibrous iron ftone. Schmeifser z. p. 97. 

 Brown Haematite"?. Thomfon chem 4. />^. 58. 

 Radiated oxide of iron, Sciverhy Br. m:n, t. 60. 



3. Red, with a red ftreak. 

 Hxmatites ruber. Cronft. min. 203. 



Ferrum minera rubra, WalL/y/i. 2. p» 145. ». 11. 

 Ferr. rubric, giandul. Syft, nat. xii. i, p. J40. n. 22. 

 Bloodftone. Berkenhout Outl /», 264, 

 RedHccmatites. Ktr<voan mineral 2. p. 2. p. 168. 

 Hsematitef, Bloodftone. Schmeifer z.p, c^x. 

 Red Haematites. Thom/cn chem. 4. /. 56. 

 Radiated oxide of iron. So-iverhy. tab. 56. 113. 



4. Yellow, with a yellow ftreak. 

 Haematite^ flavjs. Cro^H. min^ 204. 2. 

 Ferrum minera Bava. WulLjyfi, 2. p. 247. n. 12. 



