PHYSIOGRAPHY. 



Magnetic Iron. 



MAGNETIC IRON. Octahedral Iron-Ore. MOHS. 

 Primary form. Regular octahedron. 

 Secondary forms. 



i. 



Octahedron, with truncated edges. 



Sweden. Haddam, (Conn.) 

 Franconia, (N. H.) Nova Scotia. 



3. 



Octahedron, with truncated angles. 

 Gulsen, Stiria. 



5. Fig. 282. 



2. 



Dodecahedron. 



Trarersella, Piedmont. 

 Franconia, (N. H.) 



4. 



Cube. 

 Gulsen, Stiria. 



6. Fig, 283. 



Zillerthal, Salzburg. 



Zillerthal, Salzburi 



7. Fig. 284. 



Zillerthal, Salzburg. 



Irregular forms and grains. 



