eommiimt 



METALS. 85. Ferriim. 



Z. Falling into rhombic particles. 



Ferrum partic. rhomb. Sy/l, nat, xii, 3. ^. 137. «. 6. 



Found in moft of the iron mines of Europe and America, and | 

 yields a confider^ble proportion of gopd iron. 



Attracted by the magnet, reducible to grains, black with 

 a black ftreak, pf a coarfer granular textpre ^nd 

 common forn). 

 Ferrum nigrans, Sj/}. rat. xii. 3. p. i 38. », 10. 

 Minera granularis. Wall Jy ft. 2. />. 238 «. 4. c. 



2. Mixed with arenaceous particles. 



Ferrum granofum. ^yst. nftt. xii. 3. p* 138, « 9, 



3. With particles of fleatite interfperfed. 



Ferrum talcofum* Syll^nat. xii. 3. p. 138. ;;, 12, 



4. With calcareous particles intermixed. 



Ferrum calcarium. Syj}. nat. xii. 3. /». 138. », 13. 



5. With red micaceous fpots interfperfed. 

 Ferrum fidcreum. Syji. nat* xii. 3. p. 137. ». 5, 



6. Mixed with particles of pyrites. 



Ferrum molle. Syji^ nat, xii. 3- /. 1 38. «. f 1 . 



Found in moft countries containing mines of iron, and it fub- 

 jed to many varieties : contains a large quantity of ore and 

 fometimes fomc fulphur, 



frystallmum AtirzS.ed by ^he magnet, black with a black ftreak, in 

 the form of cryftals. 

 Ferrum tefielare. Syft. nat. 3. p, 136. «?. 2. 

 Ferrum cryftallifatum. ^a//. /y;/. 2. p. 234. ». 2. 

 Magnetic Iron ftone. Kiriv an mineral, z. p. 158. 

 Oflahedral Iron ore. ^chmeiffer mineral. 2. ^. 84, 

 Magnetic Iron ilone. Ihorrfonchem. \. p 5?. 

 Magnetic Iron ore. $Gnx:e>h B*'it. 7fiin, t. 54, 



Found in various parts of Bri/arn, Nor^zvay, Save^en, Gerfnany, 

 Corfica, &c. generally ftronglv attached to their matrix : the 

 primitive form of the cryftals is rcgulafly 8-fided, or cubical, 

 or in 6-fided prifjns terminated by 3 quadrangular faces; 

 colour greyifti-black or grey with more or lefs of a metallic 

 iuft.^e, and they give a black powder: fpecific gravity from 

 4,200. to 4}939. 



glqreotum, Attra6l.ed by the magnet, black with a black ftreak, in the 



form of land. 

 Arena ferrea. SyJl. nat, xii. 3. p. 199. «. 13. 

 Ferrum in form, arenae. Wall.fyft. 2. /. 255. «. iS. 

 Magnetic fand, Kirivan minerals 2. /. 161, 



