410 PHYSIOGRAPHY. CLASS II. 



Fichtelgebiirge, at Ulverstone in Lancashire, and other 

 places in England, and in many other countries. Jaspery 

 clay iron-ore is almost entirely confined to the vicinity of 

 Fischau and Meiersdorf near Wienerisch Neustadt in Lower 

 Austria ; the columnar variety occurs in several localities 

 of the north of Bohemia, in the counties of Elbogen and 

 Leitmeritz ; the lenticular clay iron-ore forms a bed in the 

 transition district of central Bohemia, in the counties of 

 Pilsen, Beraun, and Itackonitz, &c. The species of rhom- 

 bohedral Iron-ore is not a rare one, and several of its va- 

 rieties are met with in different countries. 



5. The rhombohedral Iron-ore is a mineral of the highest 

 importance, and yields a considerable proportion of the 

 iron annually produced in the different quarters of the 

 globe, lied Hematite, sometimes also compact Red Iron- 

 ore, are used for polishing metals, and Reddle as a writing 

 material. 



5. PEISMATIC IRON-OBE. 



Prismatic Iron-ore. JAM. Syst. Vol. III. p. 225. Man. 

 p. 250. Hydrous Oxide of Iron. Brown Iron-ore. 

 PHILL. p. 226. 230. Brauneisenstein (excepting Braun- 

 eisenrahm). Thorieisenstein (in part). WERN. Hoffm. 

 H. B. III. 2. S. 250. 274. Brauneisenstein. HAUSM. 

 I. S. 268. Eisenoxyd-Hydrat. LEONH. S. 342. Fer 

 oxyde' (in part). HAUY. Traite', T. IV. p. 104. Fer 

 oxyde' (excepting Fer oxyde' carbonate'). Tabl. comp. 

 p. 98. Traite', 2de Ed. T. IV. p. 101. 



Fundamental form. Scalene four-sided pyramid. 

 Vol. I. Fig. 9. 



Combinations, somewhat resembling Fig. 20., but 

 variously modified on the angles, where the py- 

 ramids e and p occur in the figure. They are 

 compressed between M and M 9 and elongated 

 in the direction of n. Incidence of d on d 



