27 ® 
METALS. 85. Ferrum. 
2. Falling into rhombic particles. 
Ferrum partic. rhomb. Syfl. nat. xii. 3. p. 137. tf. 6. 
Found in moft of jhe iron mines of Europe an<^ Amerira, an<l 
yields a confiderablc proportion of good iron. 
commune. by the magnet, reducible to grains, black with 
a black ftreak, of a coarfer granular texture and 
common form. 
Ferrum nigrans, SyH- nat. xii. 3. 138. |o. 
Minera granularis. M'all./yll. z. p. 238 n. 4. c. 
2. Mixed with arenaceous particles. 
Ferrum granofum. Syr/- nat. xii. 3. p. 138, n 9. 
3. With particles of fteatite interfperfed. 
Ferrum talcofura. Sytl, nat. xii. 3. p. 138. », 12. 
4. With calcareous particles intermixed. 
Ferrum calcarium. Syji. nat. xii. 3.71. 138. «, 13. 
5. With red micaceous fpots interfperfed. 
Ferrum ftdcreum. $yfi. nat. xii. 3. p. 137. n. 5. 
6. Mixed with particles of pyrites. 
Femim molle. Syji. nat. xii. 3. p. 138. ». 1 1, 
Found in moft countries containing mines of iron, and is fuh- 
jefl to many varieties: contains a large quantity of ore and 
fometipies fqine fulphur. 
pystallinum Attrafted by the magnet, black with a black (freak, i” 
the form pf cryftals. 
Ferrum teflelare. Syji. nat. 3. p. 136. n. 2. 
Ferrum cryftallifatuin. Wall. fyst. 2. p 234. n. 2. 
Magnetic Iron ftone. Kirauan mineral- Z 158. 
Oftahedral Iron ore. Schmeiffer mineral. 2. ^.84. 
Magnetic Iron ftone. Ihompnchem 4. p 53. 
Magnetic Iron ore. Stnuerbf Brit mir.. t. 54. 
Found in various parts of Britain, Normay, Snueden, Germany) 
' Corfica, &c. generally ftronglv attaphed to their matrix : th* 
prirjiitive form of the cryftals is regularly 8 fided, or cubical, 
or in 6.(ided prifms terminated by 3 quadrangular faces: 
colour greyilh-black or grey with more or lefs of a metallic 
luftre, and they give a black powder: fpecilic gravity from 
4,200. to 4,939. 
flareosum. Attrafted by the magnet, black with a black ftreak, in th^ 
form of fand. 
Arena ferrea. Syji. nat, xii. 3. p. 199. n. 13. 
Ferrum in form, arenas. Wall. jyft. 2. p. 255. », 18. 
Magnetic fand. Kirvjan mineral. 2, t6i. 
